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SUDOS mini 2 User manual

1. Pressure Sound Pressure Sound Pressure Sound Pressure Sound psi velocity psi velocity psi velocity psi velocity ft sec ft sec ft sec ft sec 0 1050 29 1106 67 1161 124 1217 1 1053 30 1109 70 1165 127 1221 3 1056 31 1112 73 1168 131 1224 4 1060 33 1116 75 1171 135 1227 6 1063 34 1119 78 1175 141 1230 7 1066 37 1122 81 1178 145 1234 9 1070 38 1125 84 1181 151 1237 10 1073 40 1129 87 1184 155 1240 11 1076 43 1132 90 1188 159 1244 14 1079 44 1135 94 1190 163 1247 16 1083 47 1139 98 1194 169 1250 17 1086 50 1142 101 1198 175 1253 19 1089 53 1145 107 1201 182 1257 21 1092 56 1148 110 1204 192 1260 23 1096 58 1152 114 1207 gt 208 1263 24 1099 61 1155 117 1211 26 1102 64 1158 120 1114 34 SUDOS mini 2 LEVEL GAUGE Table 2 For European region of Russia Pressure Sound Pressure Sound Pressure Sound Pressure Sound psi velocity psi velocity psi velocity psi velocity ft sec ft sec ft sec ft sec 0 984 29 1056 67 1102 131 1135 1 991 30 1060 70 1102 135 1139 3 994 31 1063 73 1106 141 1139 4 1001 33 1063 75 1109 149 1142 6 1004 34 1066 78 1112 159 1145 7 1007 37 1070 84 1112 169 1145 9 1014 38 1070 87 1116 175 1148 10 1017 40 1073 90 1116 192 1152 11 1020 43 1079 94 1119 199 1155 14 1027 44 1079 98 1119 213 1158 16 1030 47 1083 101 1122 242 1161 17 1034 50 1086 107 1125 285 1168 19 1037 53 1089 110 1125 370 117
2. Two types of marker reflections are possible iD so nr UL RIEL AERA EC Rc 1 Reflection is in the same phase with the acoustic pulse and fluid level reflection Fig 1 My OR ie ea Fig 1 Inphase signal of reflection from marker Ee ne 29 SUDOS mini 2 LEVEL GAUGE This type of reflection can appear as a result of annular space square area reducing For example it can happen in the following cases Some thing with greater diameter than tubing diameter was used as a marker Tubing diameter changes from smaller to greater Casing diameter changes from greater to smaller 2 Reflection is in antiphase with the Temeer acoustic pulse and fluid level reflection O Fig 2 This type of reflection can happen as aresult of annular space square area increasing As a rule it is a result of tubing diameter changing from bigger to smaller ii ii wll we h FEK T 3E E r E E Fig 2 Reflected signal is inverted after tubing diameter changing from greater to smaller ges fefee O e y n 38 3S 30 5m 6 Om Of 6 62 GS 63 6 Of 6 S 65 06 6 6 om Echogram processing using DB SIAM v 2 5 Please put left marker of DB SIAM at the highest spike of reference mark reflection left marker is located on the acoustic pulse spike as a default Then please push S button and type exact distance between markers it is equal to the depth of referenc
3. ahand pump a transportation lock anda valve for quick draining off which are integrated into one body In the handle the spare rings for the GAI 01 are placed Visual monitoring unit BVK The BVK is used to visually monitor measurement results in tabular as well as in graphic form to determine the level more accurately using acoustic signals graphs to record these data in its storage and then to transfer them to the computer database While doing so it is still possible to collect measurement results in the level gauge itself and then to transfer them to the computer The BVK is manufactured on the base of an up to date Palm PC and is housed in an impact resistant body The BVK is connected to the level gauge by means of cable The acoustic signal graph is displayed exactly at the moment of carrying out the measurement Adapting pipe Adapting pipe is used to connect the nipple of the technological tap of female type with the level gauge of female type 11 SUDOS mini 2 LEVEL GAUGE 5 3 Level gauge operation 12 5 3 1 Function When monitoring the fluid level a wave metering method is used The operation process is rendered automatically An operator takes part only in acoustic pulse generation with the help of either the outlet valve of the level gauge or additional devices such as GAI 01 An acoustic pulse passes through the well annulus from the level gauge to the fluid level and back with a velocity
4. wipe it dry with clean cleaning cloth Before placing the valve back into 23 24 SUDOS mini 2 LEVEL GAUGE the level gauge lubricate slightly the surface of a rubber sealing ring 7 with lubrication After the valve has been installed into the tool assemble the latter on a level gauge tests bench GMS 1 gauge monitoring stand and blow through the valve with clean air at the pressure of 71 114 psi Test the valve for leak proofness with soap lotion dilution Slight leaks indicated by formation of small air bubbles around the outlet hole is permissible If the valve leaks more than permissible rewash it In case if the leak is not stopped even after the rewashing replace the valve couple valve tappet with ball 4 and the valve seat 3 To do this carefully compress the retaining ring 5 and pull it out of the valve body Take a guide bushing 1 a spring 6 and the valve tappet with a ball 4 out from the valve body Take the seat 3 and the sealing ring 2 out from the valve body too Q B B se 5 aA IRLA mm rary Gay i Zj a ey re VA A Replace the valve couple and reassemble the valve in reverse order while reassembling lubricate slightly the surface of the rubber sealing ring 7 with the lubrication The seat has a face bevel edge on the outer diameter The face is of small dimensions and therefore before assembling it is necessary to determine accurately whether i
5. Amperes per hour will be obtained If the capacity is lower than 1A hr cycling the battery cell should be conducted or the battery should be replaced if the desirable effect of cycling is not achieved Tocycle the battery three successive cycles of charging should be implemented It is recommended to cycle the battery periodically 3 4 times a year to provide a maximum resource for battery operation when the tool is used regularly SUPPLEMENT 7 3 SETTING THE PRESSURE GAUGE AT ZERO This mode makes it possible to correct the deviation from zero of the pressure gauge and is designed to compensate a possible temporary fluctuation from zero It is also intended to adapt the pressure gauge to different temperature conditions In this mode a correction taking into account when a deviation from zero occurs is recorded in the tool s storage The correction automatically allows the determination of the actual pressure value when further measurements are carried out Setting the pressure gauge at zero can only be conducted under the influence of atmospheric pressure zero excessive pressure on the level gauge If the level gauge has already been installed at the well head the annular gate valve should be closed The outlet valve should be open when setting the pressure gauge s level at zero Turn on the tool to set the pressure gauge at zero Then activate additional modes as described above Press the MODE key to go to the displaying of the zero
6. SETTING OF THE WORKSHOP NUMBER In order to observe and to set the workshop number turn on the tool go to the additional modes as described above and go to displaying of the workshop number set earlier by pressing the MODE key E g WSHOP 331 i e the workshop number of 331 has been set To reset the other number of workshop press the INPUT OUTPUT key and the digit place of the number being set starts flashing Select the value required by consecutively pressing the INPUT OUTPUT key and then set the next digit place and so on SUPPLEMENT 7 8 SETTING OF THE OPRETAOR S NUMBER The operator s number is set in a way similar to that of the workshop number The maximal possible value of the operator s number is 999 E g PIN 15 i e the operator s number is 15 SUPPLEMENT 8 TESTING THE LEVEL GAUGE Testing the level gauge ensures that hidden defects that interfere with the normal operation of the level gauge will be discovered After unsuccessful testing the indicator may display notes such as BUG TIME ERROR TIME It means that during the process of testing the following defects were discovered loss of information caused by incorrect use of the level gauge defects of the level gauge The note displayed refers to the type of the defect The list of possible defects is outlined in Supplement 7 SUPPLEMENT 8 1 QUICK TEST RESTARTING THE TOOL Quick test and restarting the level gauge can be activated by pressing the MODE and LEV
7. are deleted the tool enters the current time indication mode witha flashing space for digits displaying tens of hours offering to make a change Initiating of the storage is complete If the time and date do not have to be corrected the tool may be turned on In this case initiating will be automatically denied if the tool is turned on again It is possible to go to any mode required without turning off the tool In this case the initiating should be denied in order to avoid it starting accidentally while the tool is in operation If the time or date should be set or corrected press the INPUT OUTPUT key to change the flashing tens of hours Then press the MODE key to move on to the units of hours and change them ina way similar to that of changing the tens of hours After the units of minutes are set press the INPUT OUTPUT key The display will show the date in the day month year format E g 15 03 01 Set the date in a way similar to that of setting the time After the date is specified press the MODE key to change over the level gauge to the Teky ee Bpema current time mode witha flashing space for digits displaying seconds If necessary correct the seconds according to the signals of the exact time The INPUT OUTPUT key should be pressed at the beginning of the sixth signal Setting the time and date is complete The tool may be switched off or if necessary it may be still used in the required mode But initiating should be
8. cause Method of elimination 44 1 No indication on the display The battery cell is discharged Charge the battery see Supplement 4 2 CLOCK FAILURE note Very deep discharge of the battery cell when the tool has been stored in a storehouse without charging the battery Charge the battery cell see Supplement 4 transfer information to computer initiate the tool set the current date and time 3 The tool does not react to pressing the keys The same note is displayed for a long time Malfunctioning of the controller program because of unforeseen situation e g in the level determination program Restart the tool by pressing The MODE and LEVEL keys see Supplement 6 1 4 Loss of echo grams when transferring into the computer The read only storage has been partly damaged Conduct a test of recorded echo grams and a test of the storage for symbol report and echo grams see Supplement 6 Service information 05 11 08
9. data transfer but the battery cell should be charged in order to be ready to use for alonger period 2 If Ua falls down to 6 6V the tool goes off automatically to prevent the cell from deep discharge In this case the battery cell should be charged immediately In order to charge the battery the main operateing adapter or a cable of a car power supply should be connected to the auxiliary slot of the level gauge The level gauge should be off while being connected to the adapter or cable or while being charged Connect the adapter to an outlet of 220V 50Hz or connect the cable to the inner network of a car which has a voltage of 12V Turn on the tool Enter the voltage of the battery cell indication mode and press the INPUT OUTPUT key The tool will show 6 63 10 24 in 2 seconds Where 6 63 is the voltage of the battery and 10 24 is the time when the battery will be recharged At first the tool will discharge the cell down to 6 volts Then the cell will be rapidly charged The display will show When charging is about to end the display will show 8 65 02 34 After the battery cell has been charged the light of the display goes out and the tool shuts down The display will show FULLCAPACIT when the tool is turned on To go to the mode of battery voltage displaying press the MODE key The charging of the battery cell takes approximately 11 hours The battery cell should be charged at a temperature from 41 F down to 86F
10. depending on the physical and chemical conditions of gas The tool monitors an acoustic signal during 20 seconds amplifies it and records it in its storage Simultaneously the gas pressure in the annulus is also determined and recorded in the storage While analyzing and processing the recorded data the fluid level in the well is determined then shown on the digital display and automatically stored in an nonvolatile memory of the tool as a symbol report Recorded results including a complete echo gram of the acoustic signal can be printed out witha micro printer and transferred to a visual monitoring unit or a computer database When calculating the fluid level the tool automatically selects an acoustic pulse velocity according to one of the sound velocity tables recorded in it The number of the correction table is selected by the operator In addition to it it is possible not to use the tables but to set asound velocity irrespective of pressure and level manually using the keyboard According to our experience the sound velocity in wells can greatly vary even within one and the same field Therefore it is highly recommended to use your applied for your region correction table for an individual field or a group of wells within the field In any case the tool will display a level based only on the sound velocity that has been set in it The tool analyses the level of all signals including noise signals as well as it evaluates a degree of an
11. interference effect and when it is necessary automatically activates or deactivates a program filter of interference suppression 5 3 2 Control and display units The control and display units are the following a symbol display of operation modes parameters and measurement results and a four key keyboard The symbol display is used to show the tool s operation modes to control the input of initial parameters reference data of aresearch to monitor the research in progress and to display basic numerical results of the research When the information is transferred and presented a digital display serves as a symbol display applying appropriate combinations of Russian and Latin alphabets Hence the digital display provides a minimal necessary set of functions completely supporting an independent operation of the tool The four key keyboard provides an input a change of necessary parameters input of operator s commands control of all the operation modes including both a mode of the independent operation of the tool and a mode of its communication with peripherals A general view layout and notation of the keyboard s keys are shown in the picture SUDOS mini 2 LEVEL GAUGE The functional duties of the keys are BUT described in more detail in the next section MODE ouTPUT a 5 3 3 Basic functions of the keys MODE key makes it possible to Turnon the tool Consecutively look through ina closed cycle the operat
12. separately makes it possible to see measurement results in a tabular and a graphic form The BVK can be used at the well while carrying out studies If the BVK has been connected to the level gauge before acoustic pulse generation the acoustic signal graph will be displayed on the screen of the visual monitoring unit immediately after measurement The BVK also makes it possible to copy all or selected results of level gauge measurements into its storage In addition to this the BVK makes it possible to work with an acoustic signal in the mode of its magnification many times the zoom mode and if necessary the measured level value can be corrected with the help of markers Before using carefully read the Operating Instructions and BVK User Manual SUPPLEMENT 7 ADDITIONAL MODES In addition to the basic modes described in Section 5 3 4 the level gauge SUDOS mini 2 has anumber of special service modes which are hidden during its ordinary operation In order to go to additional modes enter the Mode 11 Next mode The display will show NEXT N The N symbol meaning no additional modes are denied on the right is flashing Press the INPUT OUTPUT key to insert the Y symbol meaning yes additional modes are activated When pressing the MODE key further the additional modes are brought into operation in the order outlined below When the tool is turned off and then turned on again the additional modes are denied automati
13. setting mode E g Z78 6 The last digit places show the correction value taken into account in this case added if any measurement for the determination of the actual pressure value is conducted In the example the correction equals 125 psi Press the INPUT OUTPUT key In this case a new deviation correction will be saved in the tool s storage and the pressure readings will be set at zero in the pressure monitoring mode The saved correction is stored in the tool s storage even when initialization is carried out until another deviation correction is saved during the next zero correction 40 SUDOS mini 2 LEVEL GAUGE The first digit places show the zero deviation correction of the amplitude of an echo gram In the example the correction equals 7 units The correction is calculated automatically according to the echogram of the previous level determination SUPPLEMENT 7 4 DISPLAYING OF THE PRESSURE GAUGE SENSITIVITY When the manufacturer adjusts the tool the sensitivity value of the pressure gauge is recorded in the tool s storage This sensitivity value is used as an increase factor when measuring pressure Turn on the tool to view the factor Then activate additional modes as described above Press the MODE key to move on to the sensitivity indication mode e g SENS 112 5 In the example the pressure gauge sensitivity recorded during the tool packaging equals 112 5 mV 1422 psi This value is recorded in the tool s regis
14. to charge the cell at ambient temperatures of below zero because it causes the untimely failure of the tool Do not initiate the tool when the battery cell is discharged the indicator is flashing as well as do not turn it on Supplement 7 1 until the initialization process is completed if it has been started before While initializing it is possible to re fix a date and time in the tool however all the accumulated data can be erased from the level gauge s storage without any possibility of its reset Therefore before initializing it is recommended to store the measurements results in the database DB SIAM This type of level gauge can transfer information to three tools 1 a personal computer PC 2 a visual monitoring unit of BVK series on the base of a pocket PC In order to avoid errors and information losses when transferring the data to these tools read attentively and strictly follow the operational requirements of corresponding software products and tools Pay attention to the version of the installed software This tool operates in combination with DB SIAM of aV2 0 version and higher ones When tightening the tool on a gauge nipple of a well Christmas tree it is necessary to use clips on the body The use of impact tools and use of the level gauge s case as a lever are prohibited Do not rotate the body and valve when the pressure in the operating body of the tool is excessive After the level gauge has been ins
15. to display and to set the number of measurements during automatic recording of gas pressure The possible alternatives here are as follows 1 2 3 4 5 7 10 15 20 30 40 50 70 100 150 200 300 400 500 600 700 800 900 The symbol indicates the infinite number of measurements While this the level gauge will be operating in an independent mode until the operator goes to Mode 1 or 2 or until the battery cell discharges E g NUMBER 15 i e 15 measurements will be conducted 8 Table This mode displays and selects a number of user working tables of the sound velocity A factory basic version contains three alternatives 0 there is no table at all the sound velocity is set manually 1 there is a table appropriate for a Siberian region of Russia see Supplement 3 2 there is a table appropriate for a European region of Russia see Supplement 3 In addition to it using acomputer and a database it is possible to install any of four user tables see Supplement 2 for more detail A user table of the tables already installed in the tool is selected by pressing the INPUT OUTPUT key consecutively E g TABLE 15 i e auser table of Number 15 has been selected 9 Speed of the sound velocity This mode is initiated only in case when Table 0 i e the sound velocity should be set manually is selected Firstly the sound velocity m sec set earlier is displayed In order to set a required value of i
16. to have time to charge it if necessary 19 SUDOS mini 2 LEVEL GAUGE 7 MEASURING ATTENTION While performing work on a well strictly follow the requirements and provisions of the Safe operating Instruction Section 4 7 1 Fluid level monitoring Install the tool on the nipple of the technological tap see Section 4 4 2 If the nipple of the technological tap is male type assemble the level gauge directly If nipple is a female type use adapting pipe for assembly After having placed the tool in a position comfortable for access to the keys and observation of the display turn it on and set if they have not been set beforehand a number of a well and a well cluster a research type and other necessary parameters When using acoustic pulse generator GAI 01 change over the level monitoring program in a position of gas inlet into the well Mode 9 Press the LEVEL key and keep it pressed for about one second until the symbol appears on the display It means that the tool is ready for level measuring During this one second pause the level gauge measures a noise level in the well and automatically determines a necessary operation threshold The digit place in which the I symbol is displayed depends on the noise level the higher the noise the BLY more right the symbol appears Generate an acoustic pulse by pushing stop on the handle of the tool s outlet valve The next 20 seconds after an acoustic pulse has been ge
17. 36 SUDOS mini 2 LEVEL GAUGE The cell cannot be charged when the ambient temperature is below 0 If the battery cell capacity decreases or if the tool is turned on for the first time after it has been stored for more than six months the battery cell should be cycled Cycling the cell once in three months can also be a preventive measure The procedure for checking the cycling of the battery cell and battery cell capacity is described in Supplement 7 3 SUPPLEMENT 5 DATA TRANSFER TO THE COMPUTER ATTENTION To avoid errors while transferring data to the computer carefully read and strictly follow all the instructions given in corresponding sections of the User s Manual for the Computer Database Data transfer is carried out in the following sequence of operations 1 Turn off the level gauge if it was on and connect it to the computer with an interface cable 2 Start the computer database 3 Turn on the level gauge 4 Start the import process to the computer database During the data transfer user tables are received These tables are marked in the computer database as tables that should be exported to the tool SUPPLEMENT 6 VISUAL MONITORING UNIT BVK 02 RN CON aS we S VE EO aT Maximun and minimum amplitude Left marker values Right marker Zoom button Active marker selection Table mode button Record corrected level Up Down buttons 37 SUDOS mini 2 LEVEL GAUGE The BVK to be ordered
18. 5 21 1043 56 1089 114 1129 484 1181 23 1047 58 1092 120 1129 683 1188 24 1050 61 1096 124 1132 853 1190 26 1053 64 1099 127 1132 1152 1194 35 SUDOS mini 2 LEVEL GAUGE SUPPLEMENT 4 CHARGING THE BATTERY CELL The level gauge is fed with a built in battery with extend specific capacity The operating requirements of the battery should be strictly followed in order to take full advantage of the battery cell Correct use of the battery cell ensures its smooth operation and it can be used as areliable power source of long duration The optimum mode of cell operation can be represented by the following cycle full discharge and charge in the mode described below again full charge etc Operating the battery cell in the optimum mode ensures its operation without charging during 2 4weeks depending on the intensity and temperature during mode of operation The voltage of the battery cell Ua can be checked by a digital display in the mode of the battery cell voltage monitoring If the battery cell is fully charged Ua should be within a range from 7 5V up to 8 5V Besides the tool indicates limiting values of Ua 1 If Uais lower than 7 1V the digital display starts changing its brightness every 0 5 sec It signals that the battery cell should be charged and that it can be charged At the same time the tool can be still used without charging for a certain period of time e g to complete the study which has been undertaken or
19. 5W90 MANOL into the hole M5 25 SUDOS mini 2 LEVEL GAUGE After the level gauge has been assembled completely it is obligatory to test its body for leak proofness and strength To do this assemble the level gauge on a level gauge tests bench GMT 1 IZM 4 137 003 and test it for leak proofness with soap solution suds at the pressure of 71 114 psi Slight leak of the valve with formation of small air bubbles around the outlet hole is permissible Leak around the movable coupling body is not permissible Perform a pressure test of the tool according to Section 8 2 5 of this Instruction If requirements of leak proofness have been met the tool is allowed for service otherwise it is not allowed for service and should be sent back to SIAM Company in order to avoid trouble 9 STORING AND TRANSPORTATION OF THE TOOL It is necessary to store the level gauge in a special bag in dry heated rooms the ambient temperature should be in the range from 14F up to 104 F and the air humidity content should be not more than 80 It is permitted to transport the tool in a special bag with any type of transportation when the ambient temperature is in less than 40 F or more than 122 F While transportation avoid strong vibration and impacts When storing the tool it is necessary to inspect the voltage of the built in battery cell once per month and if necessary to charge it The cell charging is allowed only when the ambient temperatur
20. 7 3 Setting the pressure gauge at zero 40 Supplement 7 4 Displaying of the pressure gauge sensitivity 41 Supplement 7 5 Displaying and setting the tool number 41 Supplement 7 6 Selection of the display brightness 41 Supplement 7 7 Setup of the workshop number 42 Supplement 7 8 Setup of the operator s number 42 Supplement 8 Testing the tool 42 Supplement 8 1 Quick test Restarting the level gauge 42 Supplement 8 2 Test of recorded echo grams 42 Supplement 8 3 Test of the symbol reports and echo grams storage 43 Supplement 9 Defects discovered while testing the tool 43 Supplement 10 List of possible defects and methods of their elimination 44 02 SUDOS mini 2 LEVEL GAUGE SIAM COMPANY THANKS YOU FOR ACQUISITION OF THE LEVEL GAUGE SUDOS MINI 2 AND ASKS YOU TO FOLLOW THESE BASIC REQUIREMENTS WHILE OPERATING IT e The level gauge is an electronic microcontroller operated tool provided with an internal battery cell display keyboard storage and other tools While operating it try to avoid impacts strong vibration attack by acids alkalis and strong solvents Do not put the tool into liquid Before turning on the level gauge for the first time as well as after it s storing for a long time firstly charge the battery cell Supplement 5 4 and just after that turn on the tool It is always necessary to charge the battery cell until it is fully charged It is not allowed to interrupt the charging process as well as
21. EL keys simultaneously The display will show the following note for 1 second TEST ROM On successful test completion the level gauge will operate in the annular pressure monitoring mode SUPPLEMENT 8 2 TEST OF RECORDED ECHO GRAMS A test of the recorded echo grams is started by simultaneous pressing the MODE INPUT OUTPUT and LEVEL keys and releasing the LEVEL key The display will be showing the following note for 1 second SERVICE 42 SUDOS mini 2 LEVEL GAUGE Then the level gauge will be testing the symbol reports and echograms recorded The display will show the following for 1 27 seconds TESTFLES17 The time during which the testing is conducted depends on the number of recorded echograms after the level gauge is initiated On successful test completion the level gauge will be set in the annular pressure monitoring mode and will not shut down after a 100 second delay on pressing any of the level gauge s keys To return to the 100 second delay function turn off the level gauge and then turnit on again SUPPLEMENT 8 3 TEST OF THE SYMBOL REPORTS AND ECHO GRAMS STORAGE ATTENTION A test of symbol reports and echograms clears the contents of the memory and the contents cannot be restored To save important data transfer these data to the computer database before conductinga test When the test of recorded echograms is complete without turning off the level gauge activate the initialing of the tool described in Supplemen
22. SUDOS mini 2 LEVEL GAUGE 1 GENERAL DATA ON THE TOOL 2 BASIC TECHNICAL CHARACTERISTICS 3 COMPONENTS OF A SET OF DELIVERY 4 SAFETY OPERATION INSTRUCTION 4 1 General provisions normative codes 4 2 Requirements to the personnel 4 3 Research object 4 4 Equipment assembly and disassembly sequence 5 ARRANGEMENT AND OPERATION OF THE TOOL 5 1 General information 5 2 Arrangement application and operation of components 5 3 Operation of the tool 6 PREPARATION FOR RESEARCHES 6 1 Preparation of the tool for service 7 MEASURING 7 1 Fluid level monitoring 7 2 Automatic recording of gas pressure 8 MAINTENANCE 8 1 Schedule of maintenance 8 2 Maintenance procedure 9 STORING AND TRANSPORTATION OF THE TOOL quan CONTENTS 4 4 NOD HD 60 60 19 20 20 21 22 22 23 26 SUDOS mini 2 LEVEL GAUGE CONTENTS SUPPLEMENTS 27 Supplement 1 Level monitoring under complicated conditions Recommendations on measurements under complicated conditions 27 Supplement 2 Setting of a user correction table 28 Supplement 3 Function of the sound velocity and the annular pressure 34 Supplement 4 Charging of the battery cell 36 Supplement 5 Data transfer to the computer 37 Supplement 6 Visual monitoring unit of BVK series 37 Supplement 7 Additional modes 38 Supplement 7 1 Setting of time and date Initialization of storage 38 Supplement 7 2 Capacity control and cycling of the battery cell 40 Supplement
23. a 28 SUDOS mini 2 LEVEL GAUGE While making measuring it is necessary to estimate correlation table 1 and correlation table 2 applicability for exact oil filed The applicability is possible thanks to sound velocity measuring on 3 5 of active oil wells on exact oil filed at least Basic method or sound velocity deteremination in annular space is based on reference mark using Reference mark method is realized in two steps Step 1 Step 2 Step 1 Reference mark point mounting inside the well Casing Reference mark is the any kind of space heterogeneity which quite abruptly changes the annular space squarearea Asa rule the mandrels protectors or some other equipment can be Tibing considered as amarkers Joint Figure Example of reference mark in well Reference Reference mark mounting can be done while tubing pullingdown a The depth of marker set must be not less than 492 656 ft below the dynamic fluid level Some other heterogeneities in the wells can be used as additional reference marks For example tubing diameters changes can be used as additional reference marks Step 2 Instrumental measurements at the wells with mounted reference marks Echograms processing Echogram recording is proceed by the gt gt gt SUDOS level gauges Echogram a processing is done thank to DB SIAM software Main target in this case is to identify reference marks reflections
24. a microprinter or acomputer to the level gauge when the power of the tool is on These defects will be displayed every time when the level gauge is turned on until the initiating of the storage is conducted However in order to save information stored in the tool s storage the data should be transferred to the computer database before initiating If the defects mentioned above cannot be eliminated the level gauge should be repaired Some other defects can be discovered by means of self testing To eliminate these defects the tool should be repaired ERROR ROM permanent computer storage is out of order ERROR RROM reprogrammed permanent computer storage is out of order ERROR TIME clock is out of order ERROR FPAM ferromagnetic storage is out of order ERROR FL1 FLESH DATA storage is out of order ERROR FL2 FLESH DATA storage is out of order Zero readings do not coincide after they have been recorded ERROR FL3 FLESH DATA storage is out of order Unit readings do not coincide after they have been recorded After the ERROR FL2 or ERROR FL3 defects have been found out the number of faulty storage cells can be discovered by pressing the INPUT OUTPUT key The display will show the number of faulty storage cells e g NUMBER 46 In the example 46 memory cells are defective SUPPLEMENT 10 LIST OF POSSIBLE DEFECTS AND METHODS OF THEIR ELIMINATION Description of the defect its manifestation and additional features Likely
25. ables recorded in the tool Then press the MODE key change over the tool in any operation mode required The table of the number selected will remain working during all following level measurements until the next selection of auser table 32 SUDOS mini 2 LEVEL GAUGE When one sets TABLE 0 and then presses the MODE key the mode for manual setting of a sound velocity Mode 8 correction velocity mode is activated And the display will show a sound velocity ft sec set manually earlier e g SPEED 1083 Press the INPUT OUTPUT key and the first digit place hundreds of velocity starts flashing Change it up to the required value by pressing the INPUT OUTPUT key several times To pass to the next digit place of velocity press the MODE key and so on After all digit places have been set shift the tool in any operation mode required by pressing the MODE key The velocity input is finished The range of sound velocity set manually can vary from 600 ft sec up to 1999 ft sec The set value of a sound velocity is recorded in the tool s storage and used in all the following level measurements irrespective of the annular pressure until a new sound velocity is set or another user table is selected 33 TONY SUDOS mini 2 LEVEL GAUGE SUPPLEMENT 3 DEPENDENCE OF SOUND VELOCITY ON ANNULAR PRESSURE TABLES FOR GENERAL USE Table 1 For Siberian region of Russia
26. ansfer of level monitoring parameters and results to a measurements and echo grams database the work with a database including construction and use of user tables are described in more detail in the Measurement data and echo grams database SUDOS DB Operator s manual included in the delivery set The sound velocity in user tables can be from 820 ft sec up to 1657 ft sec To set a user correction table enter Mode 7 correction table mode The user table number set earlier is displayed in flashing digit places E g TABLE 1 In order to draw dependencies of sound velocity itisnecessary to measure sound velocity at 50 of production oil wells of oil filed at least from the point of view of statistic reliability After all planned sound velocity measurements it is possible to draw the trend of nonlinear graph Fig 4 31 SUDOS mini 2 LEVEL GAUGE V3B f P3 420 400 V3B M C 40 P3 aT M Fig 4 Trend drawing example According to this trend it is possible to draw the table of sound velocity dependency from annular space pressure which you can put into DB table Fig 5 Please refer to DB SIAM user manual to acknowledge with the procedure of new table transferring from DB SIAM to level gauges TT Fig 5 Putting new data of sound velocity into DB SIAM EEETEEEH 5 p ES Press the INPUT OUTPUT key several times select a required number of the t
27. between the tubing string and the casing string is too narrow because of hydrate and paraffin plugs The response acoustic transient signal is scattered in multiple changes of gaps 5 There is a very low less than 7 psi or a zero excessive pressure in the annulus whereas the fluid level is at a great depth deeper than 3281 ft The acoustic transient signal that is generated and returns is of very low amplitude 27 SUDOS mini 2 LEVEL GAUGE A low fluid level It is recommended to generate an acoustic pulse of a shorter duration Strong interference much foam significant necking of an annulus gap low gas pressure in the annulus It is recommended to generate an acoustic pulse of a longer duration Very often especially on wells equipped with an electrical submersible pump ESP the source of very strong interference is acoustic noise from a delivery line In this case it is recommended to turn off the valve on the delivery side of the Christmas tree if it does not conflict with safety requirements and the technological process of oil production Furthermore it is necessary to place anote warning that the valve is turned off After measurements have been made the valve should be turned on It is necessary to turn on the valve in several stages in order to smooth the pressure gradually and to prevent break down of the pump delivery When the valve is opened completely take the warning note away Som
28. cally SUPPLEMENT 7 1 SETTING THE TIME AND DATE INITIATE THE STORAGE This mode makes it possible to reset the time and date and delete the contents of the random access storage of the tool The storage contents deleted cannot be restored in this case In order to save important data transfer them to the computer database before initiating The current time and date are not removed automatically and may be left without changes or can be partially corrected Attention Initiating cannot be conducted if the battery cell is discharged the indicator is flashing In addition to this the device may not be turned off during the process of initiating before it is completed In order to start initiating enter the Initiating mode The digital display will show INITIALIZ N The N symbol meaning no initiate is denied on the right is flashing Press the INPUT OUTPUT key to insert the Y symbol meaning yes initiate is allowed 38 SUDOS mini 2 LEVEL GAUGE Then press the MODE key to go to the Current time mode If initiating is allowed the current time is indicated with a flashing space for digits displaying tens of hours E g 14 24 53 If initiating and time setting are denied the tool may be turned off To continue initiating press the INPUT OUTPUT key In this case the initiating starts and the contents of the random access storage are deleted This time the display shows DELETE After the contents of the storage
29. d results of the level monitoring and it shows one less after each measurement of the level The second counter SR Ne shows the vacant storage for measurements graphs and it also displays one less after each performance of a graph recording operation when the level has been measured E g SR120GR 11 i e in the storage there is enough room for recording 120 symbol reports and 11 graphs The total capacity of the storage is adequate for 3008 symbol reports and 310 graphs The counters return to the initial storage capacity when they are initialized or data are transferred to a computer If the storage is completely full a recording of every following measurement result automatically erases the information about the first measurement and soon 13 Next This is the mode of access into the next additional group of modes hidden during the ordinary operation of the tool ona well E g NEXT NO i e the access into the next modes is denied If we press the INPUT OUTPUT key the Y symbol replaces the N symbol and the access into the next modes is allowed E g NEXT YES The next additional modes EXACT TIME setting of the exact time TIME reflection of the current time DATE reflection of the current date INITIALIZATION tool initialization SUDOS mini 2 LEVEL GAUGE BATTERY CELL internal accumulator voltage ZERO OF THE PRESSURE GAUGE zeroing pressure sensor SENSITIVITY OF THE PRESSURE GAUGE setting of the pressure s
30. denied in this case When initiating is conducted the tool has the following parameter values cluster number 00001 well number 000001 field number 001 type of study DYN turn on interval 1 min amount of measurements in the GPC the pressure recovery curve mode 30 correction table 1 sound velocity 1083 ft sec counter of symbolic reports capacity 3008 counter of graph capacity 310 additional modes are allowed Y initiating is allowed workshop number 001 operator s number 001 display brightness 53 39 SUDOS mini 2 LEVEL GAUGE SUPPLEMENT 7 2 CAPACITY CONTROL AND CYCLING OF THE BATTERY CELL This mode is designed to estimate the actual capacity of the battery cell and to conduct the cycling of the battery where necessary If the battery cell is partially discharged it should be charged twice in order to make it possible to control its capacity The battery is discharged automatically before charging The time of the previous discharge is fixed in the tool s storage and is displayed in the battery voltage displaying mode E g 7 65B 12 48 The figures after the B symbol 12 48 show the time of the battery discharge before charging The time is shown in hours and minutes Calculate the time displayed in hours By multiplying the hours by the energy consumed by the device in the accelerated discharge mode approximately 0 24A the battery capacity in
31. e is above zero 26 quo SUDOS mini 2 LEVEL GAUGE SUPPLEMENTS SUPPLEMENT 1 LEVEL MONITORING UNDER COMPLICATED CONDITIONS In some situations it is difficult to detect an acoustic signal reflected from the fluid level accurately and consequently it is difficult for the tool to render automatic determination of the fluid level reliably Some reasons for this recommended measurement techniques and modes and methods of result analysis are described in the given supplement RECOMENDATIONS ON MEASUREMENTS UNDER COMPLICATED CONDITIONS Factors making automatic determination of alevel to be more difficult are as follows 1 A high fluid level not deeper than 98 ft from the wellhead makes a period of acoustic transient signal response to be shorter than the duration of the signal itself A response arrives on the initial signal background and therefore it is difficult to detect it 2 In the well annulus there is great interference caused by too strong vibration of the tubing and casing String vibration of an electrical submersible pump EPS leaks from valves and other reasons The returning acoustic signal has a lower amplitude than that of the noise level 3 There is much foam in the annulus The foam absorbs the acoustic transient signal and therefore it arrives at the wellhead significantly alleviated at a significantly lower level 4 Either the valve is not open completely or the space
32. e mark After those actions DB SIAM will automatically calculate sound velocity value and put it into exact DB field Results of instrumental measurements are put ina table as it is shown below Table 1 Pressure Sound Velocity Pressure Pressure in the annular space measured by the SUDOS level gauge Sound Velocity velocity of sound According to the table 1 data DB SIAM generates the graph of sound velocity dependency form annular pressure Fig 3 Please draw data from the tables 1 and 2 on the figure 3 and then estimate how much data from tables corresponds to the measured data 30 SUDOS mini 2 LEVEL GAUGE Vae f P3 0 5 10 15 20 25 30 35 40 P3 aT Fig 3 Sound velocity dependency from annular space example In case of insufficient differences between table data and real sound velocity values less than 10 it is recommended to use the table which data are close the real sound velocities values If both tables differs from real data more than 10 you need to generate your own table of sound velocity dependency from annular space pressure In addition to the tables mentioned above an on line storage of the level gauge makes it possible to record user tables up to 4 tables accepted for conditions of particular oil and gas production organizations particular oilfields etc A number of user tables can be from 10 to 63 User tables are recorded in the storage simultaneously with tr
33. ended to generate acoustic pulses in the annulus to receive and convert an acoustic response an acoustic signal as well as to determine the fluid level and to monitor pressure at the well head The tool operates according to its internal program controlled with a built in microprocessor controller which synchronizes the operation of all the components processes the data transferred from primary transducers performs a level calculation displays the operation modes and monitoring results on a digital display as well as it registers measurement parameters and results in its fixed storage and ensures a communication with external devices a computer and a visual monitoring unit The level gauge operates on a built in battery cell with a life resource of not less than 1000 charge discharge cycles To charge the cell in the level gauge there is a built in programm controlled charging device allowing to service the battery cell correctly 08 SUDOS mini 2 LEVEL GAUGE The level gauge contains 1 arotating removed outlet valve 2 arotating body of the tool 3 two install clips 4 athread jointing coupling 5 asymbol display 6 akeyboard 7 an auxiliary slot to connect external devices such as a mains operated adapter a cable for charging from car power acomputer and a visual monitoring unit When monitoring the fluid level the level gauge is installed directly on a gauge nipple of the well Christmas tree and measu
34. ensor sensitivity TOOL S NUMBER reflection of the tool number DISPLAY BRIGHTNESS setting of the indicator brightness WORKSHOP NUMBER setting of the workshop OPERATOR S NUMBER setting of the PIN 14 Initialization This mode makes it possible to clear the tool s storage and set change the date and time INITIALIZ N In details the initialization mode is described in Supplement 7 1 15 Time This mode makes it possible to display a current time hour min sec The two last digit places seconds flash E g 14 24 53 To correct the time in accordance with the sixth signal of the precise time press the key INPUT OUTPUT The seconds will be set at zero and the minutes will be expressed in the closest round number to the current time 16 Setting of time This mode displays the current time in hour min sec format Digit places being set are flashing E g 14 24 53 In details the time setting mode is described in Supplement 7 1 17 Setting of the date This mode makes it possible to display the current date a date month year format Digit places being set are flashing E g 15 11 01 In details the date setting mode is described in Supplement 7 1 18 Battery cell This mode makes it possible to display the battery cell s voltage and time of its discharging in a previous cycle of the cell s charging E g 7 65V 12 48 i e the cell s voltage is 7 65 V and time of its discharge is at 12 hour 48 m
35. essure of 2134 psi during 10 minutes While testing oil leak from the level gauge is not permissible 8 2 6 Replacement of sealing rings The sealing ring of the outlet valve a rubber ring on the valve body and sealing rings of the thread jointing coupling one rubber ring and two guard split fluoroplastic rings are subject to replacement To replace the valve s sealing ring it is necessary to disassemble the valve from the tool take out the ring from the groove with the help of a sharp thing clean the groove from dirt using petrol and cleaning cloth and place a new ring at the place of the old one Before reassembling lubricate the ring with the lubrication and install the valve at its place in the tool To replace the rings of the jointing coupling it is necessary to unscrew a screw M5 witha spring washer take out 51 balls of 3 97 mm diameter consequently rotating the jointing coupling relatively to the tool body remove the coupling from the tool body then take out old sealing rings from the groove clean the groove from dirt and reassemble successively first the split ring then the rubber ring and then the second split ring When assembling try to avoid the rings deformation Before the assembly lubricate the rings with the lubrication The split rings should be rotated relatively to each other through the angle of 1800 Reassemble in reverse order Before screwing up a screw pour out 0 1 ft of transmission synthetic oil SAE 7
36. etimes especially on the well equipped with a back pressure valve the source of strong interference is acoustic noise from a back pressure valve In this case it is recommended to turn off the backpressure valve After measurements have been made the valve should be turned into previous position SUPPLEMENT 2 SETTING OF A USER CORRECTION TABLE When monitoring the fluid level an operator can select and set a user correction table according to which the tool determines an acoustic wave velocity which is either a function of a just measured annulus pressure or a function of the pressure and the level In addition to it it is possible to select tables recorded in the tool s storage as well as tables transferred to the tool s storage from a computer database According to our data the sound velocity in wells can greatly vary even within one and the same field Therefore it is highly recommended to use your applied for your region correction table for an individual field or a group of wells within the field In any case the tool will display a level basing only on the sound velocity that has been setinit In the fixed storage of the tool there are tables constructed according to averaged data of appropriate regions and intended for general use They can be used only for a rough level evaluation The tables are marked with conventional codes and titles see Supplement 3 Table 1 For Siberian region of Russia Table 2 For European region of Russi
37. force The acoustic transducer s body is covered with protective vanish do not damage it It is prohibited to put any things into the hole of the pressure gauge After having cleaned the tool wipe over its surface with cleaning cloth Cleaning should result in a bright metallic luster of inner surfaces of the coupling the joining thread the acoustic transducer and clean holes of the pressure gauge and the union This figure illustrates the construction components location in the inner space of the thread joining coupling of the level gauge 1 an acoustic transducer 2 a pressure gauge 3 a union It is allowed to clean the face panel with clean cleaning cloth slightly wetted with glass washing liquid After that wipe over the panel In order to avoid scratches on the glass the lightfilter of the display not make great efforts while cleaning and wiping it over External surfaces of the tool except of the face surface are wiped over with clean cleaning cloth slightly wetted with petrol and then are wiped dry 8 2 2 Maintenance of the outlet valve The outlet valve is cleaned with clean petrol a brush and cleaning cloth Before cleaning remove the valve from the level gauge place it into aclean reservoir and pour out alittle petrol Not taking the valve out of the reservoir push the handle several times Clean the external surfaces with a brush Do not leave the valve into petrol for a long time After washing the valve
38. his section a number of well and well cluster research parameters can be set in any order irrespective of each other and they are stored in the tool s storage automatically and remain stored even if the tool is turned off until they are changed Word records made to the set parameters are automatically recorded in a symbol report of each measurement and then they can be read in all records including when printing out records witha micro printer transferring data to a stationary computer etc In order to save time when carrying out the work directly on a well it is recommended to set necessary parameters beforehand MODES DESCRIPTION 1 Pressure monitoring The tool starts this mode immediately after it has been turned on The pressure displayed is the current wellhead annulus pressure e g if the pressure is 82 psi PRESS 82P is displayed 2 Cluster number This mode makes it possible to display and to set acluster number To change a cluster number press the INPUT OUTPUT key and the first digit place of the cluster number the last left figure starts flashing Change the figure up to the required value by pressing the INPUT OUTPUT key consecutively Then press the MODE key and the figure selected is stored in the tool s storage and now it is possible to set the next digit place of the cluster number E g CLST 5281 3 Well number This mode makes it possible to display and set a well number The sequence of setting a we
39. in How to work with the battery cell is described in details in Supplement 4 19 Set pressure gauge to zero This mode displays a correction for zero drift and sets the pressure gauge to zero E g Z 7 8 6 i e a correction for zero drift of an echo gram amplitude is equal to 7 units and a correction for zero drift of a pressure gauge is equal to 8 6 bar How to set the pressure gauge to zero is described in details in Supplement 7 4 20 Sensitivity of a pressure gauge This mode makes it possible to display the sensitivity of the pressure gauge E g SENS 112 5 This mode is described in details in Supplement 7 5 17 18 SUDOS mini 2 LEVEL GAUGE 21 Number of the tool This mode makes it possible to display and set the tool s number E g NUMBER 0381 The operation in this mode is described in details in Supplement 7 6 22 Display brightness This mode makes it possible to display and to select the display brightness E g BRIGHT 53 The mode is described in details in Supplement 7 7 23 Workshop number The mode makes it possible to display and to set a workshop number E g WSHOP 321 The mode is described in more detail in Supplement 7 8 24 Operator s number The mode makes it possible to display and to set the operator s personal identification number E g PIN 415 The mode is described in more detail in Supplement 7 9 5 3 5 Turning the tool onand turning it off ATTENTION Before turning on the tool for the firs
40. ion modes Consecutively look through anumber of flashing changeable digit place position on the digital display when entering or changing parameters INPUT INPUT OUTPUT key makes it possible to OUTPUT Turnonthe tool Changea value of a set parameter step by step cycling looking through the provided alternatives The set parameter being changed is displayed as a flashing free space sign This means that a parameter may be entered LEVEL key makes it possible to Turnon the tool Startsa fluid level measuring process Shange over the tool from any mode back to the initial one by consecutive pressing the LEVEL and MODE keys move back reset Turn the tool off by consecutively pressing the LEVEL and INPUT OUTPUT keys BACK This special service key is used as a prefix key It changes the operation of the MODE and INPUT OUTPUT keys only if the BACK key is pressed at that moment The BACK key significantly simplifies the procedures of selection of a required digit when setting a well and a well cluster number and other parameters as well as it makes it possible to correct a mistaken keystroke 13 14 SUDOS mini 2 LEVEL GAUGE 5 3 4 Operation modes of the tool GENERAL NOTES In this section the operation modes and their symbol display are described They are presented in the same order as they are initiated when pressing the MODE key several times All parameters mentioned in t
41. level gauge from sludge and check it If there is an undue wear massive corrosion or damages of the thread the assembly of the level gauge is not permitted Open the valve in the technological tap for a while for 1 2 sec in order to blow it through to clean it from condensate ice sludge and other plugs Install the level gauge screwing it on as far as it will go on the nipple and turn it tight in order to avoid a displacement of the level gauge when it is under pressure A tightening torque should be not less than 285 43 psi To tighten the thread use the clips on the thread coupling of the level gauge and a handle from a tool set It is possible to use any appropriate lever instead of the handle ATTENTION When tightening it is prohibited to use impact tools and the rotating body of the level gauge asa lever Turn the valve head in such a way that no gas escape hole is towards you Check whether the nut of the level gauge s outlet valve is tightened well if not turn it tight Turn the tool s body with the display and keyboard in a position comfortable for access and observation ATTENTION It is allowed to rotate the rotating body and valve only if there is no pressure in the working body of the level gauge 07 SUDOS mini 2 LEVEL GAUGE Lift off the keyboard and display cover and set up the tool ina pressure monitoring mode Gradually not causing a pneumatic or hydraulic impact open agate valve until gas
42. ll number is similar to that described above E g WEL 43231 4 Field number This mode makes it possible to display and set a field number The field number can be reset ina way similar to those described for the cluster number E g FIELD 432 5 Research type This mode makes it possible to display and to select a research type The following research symbols are accepted in the tool STAT denotes a static level determination DYN denotes a dynamic level determination SUDOS mini 2 LEVEL GAUGE LRC denotes the recording of a level build up LDC denotes the recording of the level build down GPC denotes an automatic recording of gas pressure To select a research type it is necessary to press the INPUT OUTPUT key consecutively up to the required research type E g TYP DYN i e adynamic level determination research type has been selected 6 Period mode This mode is appropriate only for automatic recording of gas pressure This mode makes it possible to display and to set an interval of the tool s operation in terms of minutes when automatically recording an annulus pressure The possible alternatives are 1 2 3 4 5 6 7 8 9 15 20 30 40 50 60 70 80 90 The interval is selected by pressing the INPUT OUTPUT key consecutively E g PERIOD 8 i e an 8 minute interval has been chosen 7 Number of measurements This mode is active just for automatic recording of gas pressure This mode makes it possible
43. nerated the tool detects and records acoustic data from the well Acoustic data detection can be observed on the display showing the signal peak level in 50 gradations the more right the symbol moves the higher the noise level is After 20 seconds the L symbol appears on the display This symbol shows that the detection and recording of acoustic data have been finished and the tool is in mode of echo gram analysis and level calculation In 1 or 2 sec after the beginning of calculations a level measurement result is displayed E g L 2 3380F i e the fluid level has been measured at the depth of 3380 ft and 2 reflections of an acoustic signal from the fluid level have been recorded 20 SUDOS mini 2 LEVEL GAUGE For each calculation the calculated value of the fluid level the number of reflections research parameters and a graph are automatically recorded into the tool s storage for symbol reports and into the storage for echo grams combined with symbol reports Hence symbol reports are recorded into the echograms storage and are duplicated in the storage for symbol reports To make the monitoring results more reliable it is highly recommended to reconduct the level measurement If the measurement results significantly differ from each other it testifies that the tool cannot determine the fluid level automatically This can be caused by different reasons some of them are considered in Supplement 1 In this and as well as in other d
44. o connect the level gauge to a computer and to transfer data from the tool toa computer data base 5 2 5 Handle The handle ensures convenient assembly and disassembly of the level gauge on a well and the handle is of agreat length and strength that makes it possible to tighten with an adequate moment see Section 4 4 2 the level gauge on a measuring nipple with the help of install clips on a rubber jointing coupling of the level gauge without the use of any other tools 5 2 6 Spare parts Rubber sealing rings are placed in a surface turning of the body and in a removable seat of the valve They should be replaced in case if this joint is worn out or is not hermetically sealed A set consisting of two split guard fluoroplastic rings and a rubber ring is intended for replacement of arotating the coupling the body sealing in case if the latter is not hermetically sealed The replacement of worn out parts is performed according to the level gauge s maintenance instructions described in Section 8 5 2 7 Additional accessories Acoustic pulse generator GAI 01 The acoustic pulses generator GAI 01 is used to generate the acoustic effect when there is no excessive pressure in the well s annulus The GAI 0 1 may also be used to monitor the fluid level down up to 5905 8202 ft when the annular pressure is SUDOS mini 2 LEVEL GAUGE rather low The GAI 01 has a reservoir for accumulating the excessive air pressure a receiver
45. oubtful and necessary cases it is recommended to determine the fluid level according to an acoustic signal graph One can get an acoustic signal graph when transferring measurement data to one of the tools i e a personal computer a visual monitoring unit 7 2 Automatic recording of gas pressure in the wellhead annulus Insall the level gauge on the nipple of the technological tap see Section 4 4 2 After having placed the tool in a position comfortable for access to the keys and observation of the display turn it on and set if they have not been set beforehand a number of a well and a well cluster an automatic gas pressure recording research type GPC mode Mode 4 and an interval of the tool s operation Mode 5 Press the LEVEL key The display will show START GPC The level gauge starts its operation in 5 seconds and it will automatically come on ina set time period operate during 0 2 sec it measures the pressure and records the measurement result in the storage automatically go off and so on It is recommended to select such a period of measurements so that within a total operation period the tool makes not more than 3008 measurements To interrupt the GPC mode select the modes of STAT or DYN research type 21 SUDOS mini 2 LEVEL GAUGE 3 MAINTENANCE 8 1 Schedule of maintenance The tool s maintenance M is subdivided into 4 groups depending on an operation interval and is presented in the table below Wo
46. pe Handle for tool assembling on the well Fluoroplastic sealing tape Cone a ry 14 SPA for valve unit Cone Ring 020 024 25 2 5 15 SPA for rotating body Guard fluoroplastic split ring Ring 062 066 25 2 5 05 SUDOS mini 2 LEVEL GAUGE 4 SAFE OPERATION INSTRUCTIONS 4 1 General provisions normative codes The construction of the wellhead equipment should correspond to the scheme approved by the State municipal engineering supervision bodies Preparation of a well for researches and carrying out of the researches should be performed in accordance with the requirements of the Instruction and internal well servicing and researches instructions approved by the head of the enterprise Research equipment should be operated according to the operational instruction delivered with the equipment by the manufacturing company Safety measures are regulated by instructions of labor protection for appropriate types of work approved by the labor protection department of the enterprise and by Safety regulations for the oil and gas industry approved by the State municipal engineering supervision body of Russia 4 2 Requirements to the personnel Only people who are 18 years and older who have a secondary or higher education and are in health conditions allowing them to work in this area are permitted to carry out well researches The personnel should be professionall
47. ring cables are not required The control and display units are placed on the rotating body and have a protective cover The body with the valve and control and display units can be positioned conveniently by rotating it about its longitudinal axis in any direction and at any angle up to 360 The outlet valve can also be rotated freely about its longitudinal axis in order to fix an outlet hole in a position not towards an operator ATTENTION It is allowed to rotate the body and the outlet valve only if there is no excessive pressure in the working body of the level gauge 5 2 2 Mains operated adapter The mains operated adapter is intended to power a charging device built in the level gauge When charging a battery cell the adapter is connected to an industrial supply line of 220V 50Herz and its plug is plugged in the auxiliary slot of the level gauge The adapter ensures appropriate parameters of charging when the line voltage is from 190V up to 240V At the current load of not less than 300 mA its outlet d c voltage is 12V with spikes of not higher than 1V 5 2 3 Cable for charging from car power A cable makes it possible to charge the level gauge with a fixed voltage of 12V up to 27V from the car power supply under the field conditions Attention The battery cell s temperature should be in the range of 30 F up to 86F 09 SUDOS mini 2 LEVEL GAUGE 5 2 4 Interface cable The interface cable IBM PC is intended t
48. rk type M 1 M2 M3 M4 Once Once Once in Once in aweek amonth 6months 12 months Cleaning of the taper joining thread the acoustic transducer the pressure gauge the face panel and the body Maintenance of the outlet valve Cleaning of the auxiliary slot for connection of peripherals Operation monitoring l F Pressure test 2 F Replacement of sealing rings s 2 Notes 1 maintenance work is carried out by a service center of the SIAM company or by certified specialists of the Company The user is allowed to replace a rubber sealing ring only Item 15 Section 5 2 3 22 SUDOS mini 2 LEVEL GAUGE 8 2 Maintenance procedure ATTENTION When using petrol and alcohol follow the rules of fire prevention Carry out the work only in well ventilated rooms 8 2 1 Cleaning of the taper joining thread the acoustic transducer the pressure gauge and the face panel When cleaning use clean petrol a brush and cleaning cloth It is possible to pour out a little petrol into the inner space of the thread jointing coupling However do not submerge the tool body into liquid to clean it and not allow the liquid to be spilled on the panel of the keyboard and the display and into the auxiliary slot When cleaning the heavily dirty thread one may use such metallic instruments as an awl a screwdriver etc However while doing it do not use
49. starts entering the level gauge Stop the gate valve opening for a while in order to smooth the pressure in the well and in the tool s working body and then open the gate valve completely A pressure smoothing process should be controlled with the tool s display in pressure monitoring mode Inorder to avoid a thread joint gas leakage use thread sealing lubrication or a sealing tape 4 4 3 Level gauge disassembly Turn off the tool Close the gate valve of the technological tap Open an outlet valve of the tool and let the excessive pressure out of the working body Screw out the level gauge and take it off the nipple Drain the working body off the condensate clean a thread part and house the tool in its bag Place the end cap on the nipple o ARRANGEMENT AND OPERATION OF THE TOOL 5 1 General information The SUDOS mini 2 level gauge is a compact electronic mono unit tool It is a completely independent tool and provides all functional abilities of a well level gauge The tool is capable to display all basic monitoring parameters and results immediately The level gauge maintains the data export to a PC or viewing unit of BVK series An applied software DB SIAM included in the delivery set makes it possible to create and add computer data bases to process and analyze measurement results in more detail 5 2 Arrangement application and operation of components 5 2 1 SUDOS mini 2 level gauge The level gauge is int
50. t follow the same sequence as that of setting acluster number or a well number A sound velocity can be manually set ina range from 600 up to 1999 ft sec E g SPEED 1083 i e a sound velocity of 1083 ft sec has been set 15 SUDOS mini 2 LEVEL GAUGE 16 10 Level displaying Basic results of a previous measurement of the fluid level are read outon the display E g L 2 3380 F i e the fluid level has been measured at the depth of 3380 ft and an acoustic signal was twice reflected from the fluid level If the tool s storage does not contain any measurement for example after its initialization the display will show the following message UNCERTAIN 11 Outlet This mode makes it possible to start run a level determination program The mode OUTLET Y is used in case of gas outlet from a well an outlet valve is used here the mode OUTLET N is used in case of gas inlet into a well an acoustic pulse generator GAI is used here To work on wells where there is no pressure at all a zero pressure using the acoustic pulse generator GAI 01 or GBO 02 set the mode INLET with the help of the INPUT OUTPUT key When setting a new well cluster or a well the mode OUTLET is set automatically E g OUTLET 12 Storage capacity The vacant storage capacity left to record measurement results is displayed on two counters The first counter SR Ne displays a vacant storage for symbol reports digital parameters an
51. t 7 1 The display will show the following note for 90 seconds TEST FLES2 During the process of testing records and readings of the zeros are checked in the read only memory When successful testing of the records and readings of the zeros is complete the testing of records and readings of the units is activated The display shows the following note for 35 seconds TEST FLES3 SUPPLEMENT 9 DEFECTS DISCOVERED WHILE TESTING THE TOOL While testing the level gauge Supplement 8 the following defects may be discovered BUG FRAM1 loss of previously recorded information such as the cluster number the well number the type of study and also system parameters When pressing the MODE key the field of system parameters is completed with initial values BUG TIME clock failure the date and time are wrong When pressing the MODE key the time which was recorded in the storage at the moment of the last turning off the tool is entered into the clock Clock failure may occur if the tool has been stored for along time and the battery cell has been deeply discharged BUGFRAM 14 BUGFLES 14 loss of user tables of a function of the sound velocity and the pressure BUGFRAM 16 BUGFLES 16 partial loss of symbol reports BUGFLES 17 partial loss of acoustic signals graphs The BUGFRAM14 BUGFRAM16 BUGFLES16 BUGFLES17 defects may be caused by 43 quay SUDOS mini 2 LEVEL GAUGE incorrect use of the level gauge e g connecting an adapter
52. t is at its place The seat should be installed in such a position that the face looks inside the body 8 2 3 Cleaning of the auxiliary slot for connection of peripherals To clean the auxiliary slot pure ethyl alcohol or alcohol Alcohol consumption is 30 gr per month of operation After cleaning lubricate slightly the surface of the auxiliary slot with the lubrication SUDOS mini 2 LEVEL GAUGE 8 2 4 Operation monitoring Monitoring of basic operational parameters of the level gauge is performed for the following operation modes 1 Check of setting of adjustment and displaying modes 2 Check in the level and pressure monitoring mode 3 Check of sensitivity and noise level of an acoustic path 4 Check in the mode of automatic pressure recording 5 Check of monitoring of the maximal operation pressure not more than 1422 psi 6 Check in the mode of monitoring of the battery cell s capacity The check technique is presented in The instructions to conduct check tests of tools and systems manufactured by the SIAM company when they are in operation The Checks 2 and 3 are conducted on the level gauge tests bench GMT 1 gauge monitoring stand SIAM company Check 5 is conducted on the hydrostatic tests bench HTS 1 hydraulic test stand SIAM company 8 2 5 Pressure test A pressure test of the tool is carried out on a hydrostatic tests bench HTS 1 hydraulic test stand with oil and at an excessive pr
53. t time after it has been stored for along time or transported it is necessary to fully charge the battery cell see Supplement 4 Only after having charged the battery the tool may be turned on Otherwise the tool cannot be switched on or it can switch off immediately after having been turned on But this does not mean that the tool has any default SWITCHING ON Pressing one of the three keys turns on the tool MODE INPUT OUTPUT LEVEL After being turned on the tool remains in the same operation mode as it was in before turning off if none of the keys are pressed within a period of longer than 100 sec SWITCHING OFF The tool can be turned off from any operation mode by pressing consecutively the keys LEVEL and INPUT OUTPUT To turn the tool off from the annulus pressure monitoring mode press the key INPUT OUTPUT The tool goes off automatically If none of the keys are pressed within a period of longer than 100 sec If any malfunctions accompanied with displayed notes like ERROR occur in this case the tool goes off within a 20 second period If the battery cell s voltage decreases down to 6 6V In the latter case all the information stored in the tool are saved but in order to prevent a full discharge of the battery cell it is necessary to charge it see Supplement 4 SUDOS mini 2 LEVEL GAUGE 6 PREPARING FOR WELL TEST ATTENTION When preparing researches assembling and disassembling equipment please strictly follow
54. talled it is recommended to turn the body and valve in a comfortable position and only then to open a Christmas tree valve The neglection of this requirement sharply reduces the lifetime of floating seals When using the level gauge fulfill the requirements of Section Maintenance of the operation instruction Do not allow internal parts of the tool especially the acoustic transducer valve and jointing taper thread to become too dirty because it causes the worsening of the tool s operation and reduction of its lifetime The level gauge can be repaired only by a service department of the SIAM company or by certified specialists Unsanctioned break down of the tool and violation of operating rules cause the forfeiture of warranty responsibility 03 quarry 1 GENERAL DATA ON THE TOOL SUDOS mini 2 LEVEL GAUGE The SUDOS mini 2 level gauge further called level gauge is intended for prompt monitoring of the fluid level in oil producing wells The level gauge provides the monitoring of a static and dynamic level recording of fluid level decline and level recovery curves as well as automatic recording of gas pressure in the annulus at the wellhead The level gauge can be used to observe the fluid level while operating wells as well as while putting them into operation after their repair or outage 2 BASIC TECHNICAL CHARACTERISTICS 1 04 Range of monitored levels monitoring resolution Range of moni
55. the ground When the nipple is at the height of more than 5 9 ft above the ground it is necessary to use stationary or portable platforms if they are appropriate to the Safety regulations for the oil and gas industry 1 The nipple which is not being used at the moment should be blanked off In the way of an acoustic pulse not more than two bends of the conduit at the angle of 90 and at the distance of 65 6 ft away from the nipple are admissible 4 4 Equipment assembly and disassembly sequence 4 4 1 Surface equipment preparation Make sure that the valve of the technological tap and a pressure gauge are in running order Check that the pressure in the well researched annulus is in the range of that of the minimally permissible pressure of the tool Remove the end cap from the technological nipple Clean the taper thread from sludge oil sand and etc Check the compliance of the tread with the requirements mentioned above In cases when a thread type does not comply with the requirements as well as if there is an undue wear massive corrosion or damages of the nipple s thread carrying out researches is prohibited Clean the inner space of the nipple from paraffin hydrates ice and other If the nipple of the technological tap is male type assembles the level gauge directly If nipple is a female type use adapting pipe for assembly 4 4 2 The level gauge assembly sequence Clean the thread part of a coupling of the
56. the requirements of the Safe Operating Instruction Section 4 Successive stages of preparation for researches are presented in the table with references to the appropriate sections of the Instruction 1 Preparation of the tool for service see Section 6 1 2 Checking of the surface equipment to be available for service preparation for service see Section 4 4 1 3 The level gauge assembly see Section 4 4 2 4 Setting of research parameters see Section 5 3 4 Setting of a well cluster and a well number a field number and a research type required parameters of the research see section 5 3 4 6 1 Preparation of the tool for service The procedure of preparation of the tool for service is rather simple and it involves the following operations 1 Turn on the tool see Section 5 3 5 2 Check voltage of the cell and when necessary charge it Supplement 4 4 Check a current time and when necessary correct it Supplement 7 1 4 Check the vacant storage capacity If there is not enough room for results of forthcoming work and data stored in the storage are still important it is necessary to save them by transferring them to a computer Supplement 5 or toa visual monitoring unit Supplement 6 5 Turn off the tool The steps mentioned above take minimal time and it is recommended to carry them out every day every shift before a working shift It is highly recommended to check the battery cell s voltage beforehand in order
57. tored pressures monitoring resolution Off line storage capacity for symbol reports for graphs Time of continuous operation under normal climatic conditions and after the battery cell has been fully charged not less than Time of charging of a discharged battery cell Time of data storage in the off line storage notless than Operating range of temperature Service life Bulk not more than Option 65 9800 19 685 ft 20 6000 m 3ft 0 1422 psi 0 100 bar 1 psi 0 1 bar 3008 310 10 hours 10 hours 5 years 40 F to 122 F 40 C to 50 C 5 years 5 5lb 2 4kg SUDOS mini 2 LEVEL GAUGE quay 3 COMPONENTS AND DELIVERY SET Item name Quantity Comments Level gauge echometer SUDOS mini 2 1 Packages 1 Power adapter 1 Acoustic pulse generator GAI 1 Valve Car adapter Interface cable Adapter for GAI o col s BD oy A j N Adapting pipe oO USB COM adapter 1 One USB COM adapter for each case Operational documents SIAM Database Operating Manual Version 2 5 SIDDOS mini 2 Certificate SIDDOS mini2 Operating Manual 12 PC software CD DB SIAM 2 5 version or higher PRESSURE SIAMPump Si a oa Compatible with WINDOWS 95 98 2000 NT XP and higher 13 Spare parts and accessories SPA Wrench for adapting pi
58. tration certificate SUPPLEMENT 7 5 DISPLAYING AND SETTING THE TOOL S NUMBER The manufacturer gives each level gauge a serial number which is recorded in the tool s storage The user can change this number and record a code number in the storage e g a workshop operator field etc number When data are transferred to the computer this number is automatically imported to the computer database and is displayed in a separate column To view or specify a number turn on the tool and activate additional modes Then press the MODE key to go to the displaying of the recorded number E g NUMBER 0423 In the example the recorded device number is 0423 Press the INPUT OUTPUT key to change the number The tool number digit place which should be specified will be flashing Press the INPUT OUTPUT key several times until the required value is obtained Then press the MODE key to go to the next digit etc Setting the number can be stopped at any digit The specified number will be automatically recorded in the storage when exiting this mode or when turning off the tool SUPPLEMENT 7 6 SELECTION OF DIPLAY BRIGHTNESS This mode makes it possible to modify the brightness of the level gauge s display by pressing the INPUT OUTPUT key Possible alternatives are as follows in terms of per cent of the brightest display 13 27 53 99 E g BRIGHT 53 i e the 53 brigtness has been selected 41 SUDOS mini 2 LEVEL GAUGE SUPPLEMENT 7 7
59. y trained examined and have a special permission to conduct the works according to the job specifications The personnel should be trained to operate on the research equipment The training is performed by employees of the manufacturing company directly on the working place 4 3 Research object Such researches as pressure measuring and fluid level monitoring are carried out on oil and gas producing wells of different operation types fountain gas lift mechanized extraction and other as well as on injection water intake monitor and other wells 4 3 1 Requirements to the research object Construction and operation of a well should be performed in accordance with Safety rules in the oil and gas industry A well researched irrespective of its application and operation mode should have a technological tap equipped with a valve and a wave metering tool seating nipple A fluid level determination is possible only in that space of the well tubular tubular annulus hole annulus string annulus which connects with the used technological tap While carrying out the measurements there should not be any neckings connections dosimeters and similar tools in the tap The nipple of the technological tap should have the pipe taper thread of 60 2 size male or female type The nipple of the technological tap should Only in The Russian Federation 06 SUDOS mini 2 LEVEL GAUGE be placed at the height of 3 3 5 9 ft above

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