170-00-3 - HTHP Filter Press, 175mL, Single
Contents
1. OFITE Dependable Products From People You Trust HTHP Filter Press for Drilling Fluid Testing with 175 mL Single Capped Test Cell and N Pressuring Manifold 170 00 3 115 V 170 01 3 220 V Instruction Manual Updated 4 27 2015 Ver 2 3 OFI Testing Equipment Inc 11302 Steeplecrest Dr Houston Texas 77065 U S A Tele 832 320 7300 Fax 713 880 9886 www ofite com Copyright OFITE 2015 Table of Inti a 2 SpeciNCaHONS aaa 3 Con ten ts COMPONENTS sia 4 SAEY e RE 9 Diar AMS ias 16 Quick SLAG astenia 18 Operaatio M eee E 21 bre E 28 IVI ANTI LE arinie ne 29 Warranty and Return Policy eese 33 OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com Intro The OFI Testing Equipment OFITE High Temperature High Pressure HTHP Filter Press is designed to evaluate the filtration characteristics of drilling fluids cement slurries fracturing fluids and completion fluids under elevated temperatures and pressures Evaluating fluids under HTHP conditions similar to the downhole environment is of paramount importance Fluid properties must be monitored while under high temperatures and pressures as filtration behavior and wall cake building characteristics of permeable formations change with changing environments These characteristics are affected by the shape type and quant2. 500 F 0 250 C Thermostat 50 500 F 10 260 C O Ring Thermostat Pilot Light Heating Element 115V 200W Qty 2 Cell O ring Buna N Qty 50 Valve Stem Qty 4 Valve Stem O ring Qty 100 Filter Paper 2 6 35 cm Specially Hardened for Filter Presses Qty 10 Stainless Steel Locking Screw Qty 24 Allen Wrench 5 32 Retaining Pin Qty 2 Midget Knob OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com Optional 170 00 3 SP Spare Parts Kit 4143 07 Repair Kit for Concoa Regulator 2 153 14 Graduated Cylinder 50 mL x 1mL 2 Dial Thermometer 5 stem 5 500 F amp 0 250 C 1 170 05 Thermostat oS 1 170 07 170 10 170 11 170 13 3 50 170 16 4 170 17 O ring for Valve Stem Viton 75D 100 Filter Paper 2 72 6 35 cm hardened for bas Filter Press 100 box m 170 26 1 Locking Cap Screw Hardened Alloy Steel 24 170 27 Allen Wrench 2 171 23 1 Safety Pin with Lanyard d Spare parts listings are intended to be used as a reference for future purchas es Everyone s consumable requirements will be different and replacement quantities needed will depend upon the number of test performed on a daily Note and or weekly basis OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 6 Optional Items for HTHP Filtration Testing The items
3. 38 39 AO Adjust both the top and back pressure on the dual manifold to the recommended back pressure PSI Open loosen the inlet valve stem Y turn to pressurize the sample to prevent evaporation After heating for 60 minutes increase the inlet pressure to 500 PSI 3 448 kPa greater than the back pressure Open loosen the outlet valve stem Y turn to initiate filtration Set a timer for 7 7 minutes and a second timer for 30 minutes Monitor both the inlet and outlet pressure gauges for a pressure build up or loss Collect filtrate by opening the needle valve turning counter clockwise but only until there is a pressure drop Initially collect filtrate after about ten seconds This ensures there is good filtration control Collect filtrate after 1 minute and record the volume Collect filtrate after 7 5 minutes and record this amount including the filtrate collected previously Maintain the temperature to 5 F 3 C during filtration collection After 30 minutes the test is over Immediately close tighten both the inlet amp outlet valve stems on the cell Allow a minimum of 5 minutes for the filtrate to cool and collect filtrate by opening the receiver needle valve Close the receiver needle valve Immediately close tighten both the inlet and outlet valve stems on the cell Loosen the dual manifold t screws on both the inlet and outlet regulators Release the top pressure from the regulator by
4. 170 44 171 32 171 82 Assemblies 170 06 1 Back Pressure Receiver 15 mL Stainless Steel Tube for N2 144 11 144 15 170 07 170 28 170 32 171 23 1 170 12 170 13 3 170 14 170 16 170 17 170 26 1 170 27 170 19 170 35 Glass Graduated Cylinder 50 mL x 1 mL Metal Dial Thermometer 5 Stem Dual Scale 50 500 F 0 250 C Filter Paper 2 Y 6 35 cm Specially Hardened for Filter Presses 100 box Adjustable Wrench 6 inch 170 00 1 Heating Jacket 115V 170 01 1 Heating Jacket 230V 1 30 10 52 Jam Nut 24 Stainless Steel Qty 2 Male Connector for Power Cable For 170 01 1 230V ONLY Power Cable 230 Volt Thermostat Insulation Board Thermostat Pilot Light Heating Element 115V 200W Qty 2 Base Stand Support Rod Qty 2 Aluminum Well Stainless Steel Thermostat Cover Rubber Foot Y Qty 4 Midget Knob Power Cord 8 with Male Plug 8 16 3 SJ Round For 170 00 1 115V ONLY Street Ell 90 Ye Plate Brass Bushing Vs NPT Male to Y NPT Female O ring Receiver Body NPT Male Needle Valve Y x Ye Safety Pin with Lanyard 170 12 1 175 mL Single End Test Cell 1500 PSI 10 342 5 kPa Cell Body 316 Stainless Steel 500 PSI 1 0342 kPa Cell O ring Viton 75 Qty 2 Cell Cap 1 500 PSI 1 0342 kPa Valve Stem Qty 2 Valve Stem O ring Qty 4 Stainless Steel Locking Screw Hardened Qty 6 Allen Wrench 5 32 Filter Paper 272 6 35 c
5. If unavoidable it should be as short as practical and equipped with a shutoff valve located just before the regulator The 8051140 regulator has been internally cleaned for Oxygen but it is not recommended to pressurize HTHP Filtration tests with Oxygen due to its potentially explosive nature Never pressurize a regulator that has loose or damaged parts or is in questionable condition Never loosen a connection or attempt to remove a part until gas pressure has been relieved Before transporting pressurized cylinders that are not secured on a cart designed for such transport remove all regulators and recap the cylinders Check the regulator and all connections for leaks after installation and periodically thereafter Also check for leaks after any service in which parts or connections were loosened Brush with an approved leak detection solution and bubbles should indicate a leakage An appropriately sized pressure relief device downstream of the regulator should be installed in your system to prevent damage to equipment and or injury to personnel should an internal failure of the regulator occur Do not purge oxidizing or flammable gases in the presence of flame lit cigarettes or other sources of ignition or towards people OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 14 HTHP Cell Assembly The 170 12 1 HTHP cell assembly can handle maximum standard filtration tests a
6. Return Material Authorization RMA number An RMA form is available from your sales or service representative Please ship all equipment with the RMA number for returns or warranty repairs to the following address OFI Testing Equipment Inc Attn Repair Department 11302 Steeplecrest Dr Houston TX 77065 USA OFITE also offers competitive service contracts for repairing and or maintaining your lab equipment in cluding equipment from other manufacturers For more information about our technical support and repair services please contact techservice ofite com OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 33
7. 32 320 7300 Fax 713 880 9886 www ofite com 29 Power Cord Maintenance a Check power cord for Insulation wear and loose connections near the heating jacket and plug b The heating jacket should be placed no farther than the distance of the power cord from an electrical outlet c The Power Cord should be kept away from the hot surface of the heating jacket while in use 8 Any customer installed wiring power cords or electrical connectors will Void All Warranties Note Storage Space a Consumables and tools should all be kept in one dedicated place b Components such as manifold assemblies should be kept in a similar dedicated place 4 Regulator and Manifold Maintenance a Ifthe regulator loses pressure or steadily increases in pressure replace the seat assembly and diaphragm Concoa Repair Kit Part 143 07 Normally the Concoa regulator is supplied with the 175 mL models Concoa Regulator 805 1179 both take the same Regulator Repair 9 The large high pressure Concoa Regulator 805 1140 and the smaller Kit Note Always replace order separately the rubber diaphragm 143 00 1 which is not supplied with the 2143 07 kit e Y WW cd Diaphragm Repair Kit 143 00 1 143 00 1 OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 30 To replace the Seat Assembly T 10 TT 12 13 Unscrew the spring case housin
8. 5 minutes for the filtrate in the receiver to cool to avoid vaporizing Collect filtrate by opening the needle valve on the receiver and leave it open until fluid ceases to evacuate the valve 25 Close Tighten the needle valve on the receiver 26 Turn the regulator T screws on both the inlet and back pressure receiver counterclockwise until the T screw feels loose This will close off the flow of pressurized gas OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 25 2 Release the pressure from the Inlet pressuring unit to the cell by opening the needle valve turn counterclockwise 28 Open the outlet valve on the back pressure receiver to release pressure and collect Any remaining filtrate 29 Remove the top Retaining Pin and Lanyard and remove the Manifold Block from the Valve Stem 30 Remove the Back Pressure Assembly by releasing the Retainer Pin and Lanyard N Take care to avoid touching the hot heating jacket especially when removing the back pressure receiver Important g P 31 Drain any residual filtrate collected in the receiver into the graduated cylinder 32 Record the total amount of filtrate collected in the graduate cylinder by reading from the bottom of the meniscus curve Multiply this amount in milliliters by 2 33 Remove the cell from the heating jacket after once again checking that the valve stems are tightly closed An optional Cell Ca
9. Leave room for fluid expansion 8 Place a circle of filter paper on top of the cell o ring 9 Inspect the cap locking screws and the cell cap seats 10 Align the arrows on the cell cap and cell body and place the cell cap into the cell 11 Tighten the set screws into the cell initially alternating screws 12 With the fingers check that all of the set screws are completely tightened 13 Screw the valve stem into the cap and tighten completely with a wrench 14 Lower the cell into the heating jacket and rotate so it seats into the heating jacket 15 Move the thermometer from the heating jacket to the test cell 16 Set a timer to 60 minutes and begin heating the sample for exactly one hour Never heat for more than 1 hour 17 Connect the manifold block to the inlet valve stem and lock it in place with the retaining pin and lanyard 18 Check the needle valve on the manifold block is closed tightened clockwise 19 Connect the male end of the pressure hose to the back pressure receiver 20 Connect the back pressure receiver to the outlet valve stem Lock it in place with the retaining pin and lanyard 21 Check the needle valve on the outlet end of the receiver is closed tightened clockwise OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 18 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
10. Replace the gauge Gauge does not return to zero with Gauge has physical damage Re no pressure applied to the regulator place the gauge Creep is an increase in outlet pressure that occurs when pressure escapes even when the valve is closed Regulator seats can be compromised by particles in the process stream which can cause minor imperfections in the sealing surface The high flow and small orifice created during pressure regulation combine to turn a very small particle into a fast projectile This projectile can nick the sealing surface of the seat and cause leaks Filtering particu lates from the process stream should be a high priority and a small filter can reduce the potential for creep and increase the life expectancy and accuracy of the regulator OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 32 Warranty and Return Policy Warranty OFI Testing Equipment Inc OFITE warrants that the products shall be free from liens and defects in title and shall conform in all respects to the terms of the sales order and the specifications applicable to the products All products shall be furnished subject to OFITE s standard manufacturing variations and practices Unless the warranty period is otherwise extended in writing the following warranty shall apply if at any time prior to twelve 12 months from the date of invoice the products or any part thereof do not con
11. d temperature has been reached The fluid inside the cell may not have yet reached the proper temperature An API funded project found that for 9 most fluids it usually takes upwards of an hour for the fluid inside the cell to reach the target temperature If accurate temperature measurement is Note required during the heating portion of the test a Thermocouple Assembly 171 45 1 is available which will directly and accurately measure the fluid temperature inside the cell OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 23 15 Connect the manifold block to the inlet valve stem and lock it in place with the retaining pin and lanyard Check that the safety bleeder valve is closed knob tightened clockwise 16 Connect the male end of the pressure hose to the back pressure receiver Make sure the receiver needle valve is closed 17 Place the back pressure receiver on the bottom valve stem and lock it in place with the retaining pin and lanyard Elbow 171 24 3 Manifold Needle Block X Valve Bushing Safety Pin 4170 20 170 32 444 15 7 and Lanyard 171 23 1 Top Pressurization Manifold Assembly Bottom of Heating Jacket 18 Keeping the valve stems closed adjust the top and bottom regulators on the manifold to the recommended back pressure for your test The upper and lower limits of the test pressure differential are determined by the
12. e valve stem 5 Invert the cell body and carefully pour the sample into the cell leaving the appropriate amount of void space as indicated by the chart on page 22 Be careful not to spill fluid on the o ring inside the cell OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 21 Temperature Pressure Volume Recommendations Be Careful Not to spill fluid on the O ring Groove inside the Cell Oil based drilling fluid gt 350 F 176 C Void Space in a 1 500 PSI rated cell body 6 Place an o ring in the cell and another on the outlet cell cap They are the same sized o ring To facilitate removing the cell cap at the end of the test lightly apply a coat of stopcock grease 153 55 to the cell cap o ring 7 Inspect the cap locking screws If the cap locking screws are no longer pointed there is a possibility of stress failure and the screw s should be replaced 8 Inspect the cap locking screw seats in the cell cap indents in the cell cap If the cap locking screw seats are no longer round there is a possibility of stress failure and the cap should be replaced 9 Place a circle of filter paper on top of the cell o ring and gently push the paper downward so it contacts the o ring without the paper binding or pinching OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 22 10 Make sure the arr
13. ean all equipment and replace o rings if the test was conducted above 300 F 150 C OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 20 Opera tion 1 Plug the heating jacket into an appropriate power source Place a dial type metal thermometer into the heating well and preheat to 10 F 6 C above the desired test temperature A pilot light will come on when the heating jacket reaches the temperature set by the control knob 2 Be sure all of the o rings are in good working condition pliable with no nicks or cuts etc and are not damaged during the assembly procedures Carefully install an o ring 1 70 13 3 in the o ring groove in the cell body and another o ring 170 13 3 in the cell cap Note They are the same o ring Place a thin film of silicone grease on all o rings When testing above 300 F 150 C it is recommended to replace the Important o rings after every test HTHP Filter Press Cell Assembly 1500 PSI 175 mL 170 12 1 3 Prepare the sample according to API specifications Stir the test sample for 10 minutes with a high speed mixer 4 Place two o rings in the o ring grooves on each valve stem Screw one valve stem into the test cell on the inlet side of the cell Tighten the valve stem completely To increase the life of the valve stem and cap apply a thin layer of high temperature thread lubricant 22165 44 1 to the o ring on the bottom of th
14. ell assemblies do not have parts that are interchangeable so when ordering replacement cell caps for instance Know which working pressure rated cell assembly you are ordering for Cell Cap 1 500 PSI Set Screws 0 75 inch thick Cell Cap 2 000 PSI Set Screws 0 94 inch thick Locking Set Screws Locking set screws should have sharp points on the end If the tip becomes worn and flattened pressure may be lost in the cell or the cell cap may become damaged Any set screw cell cap that has elongated set screw holes should be discarded as they are unsafe Locking Screw for HTHP Cell Cell Cap 1 500 PSI HTHP Fil Caps 2 000 PSI 90 Cone Point ter Press 60 mesh screen 170 26 1 2 5 x 0 75 Note Round Set Screw Holes 170 14 O ring Seals The choice of o rings or elastomers as they are commonly called is very important in any high temperature high pressure environment OFITE uses Viton o rings a copolymer of Vinylidene which are less pliable than some Buna rings which may be encountered from other manufacturers but they withstand the higher temperatures better than the Buna rings The maximum temperature for the Viton o rings is 400 F 204 C OFITE suggests that all o rings cell caps cell bodies and valve stem are changed each time after running a test of 350 F 176 C or above OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 12 Fluid Expansion Space C
15. ells should never be filled completely with fluid Always leave some room for the fluid to expand under temperature This keeps the cell caps from becoming overstressed and possibly leading to a cell pressure failure or even a loss of the cell cap completely Periodically check all gauges to ensure the proper pressures are in the cell as the pressure often increases or decreases depending upon the test procedure and conditions Fluid Volume 138 mL 86 mL Oil based drilling fluid 350 F 176 C Oil based drilling fluid gt 350 F 176 C Not Recommended Use 500 mL Cell Void Space in a 1 500 PSI rated cell body OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 13 The 175 mL HTHP Filter Press uses two regulators as standard equipment Both may be operated with Carbon Dioxide CO or Nitrogen N gas 1 Concoa Regulator 8051140 00 1 Top or Main Pressure a Maximum Inlet Pressure 3 000 PSI b inch NPT Connections c Single stage regulator Regulator Safety 1 Never subject the regulator to inlet pressure greater than its rated inlet pressure as shown on the regulator body Do not allow oil oil bearing materials grease or other combustibles to contaminate the inside or outside of the regulator especially where Oxygen is in use To minimize heat effects avoid the use of piping or tubing between the pressurized cylinder and the regulator
16. ffering pore throat permeability sizes Slotted disks of varying sizes are frequently used for lost circulation materials studies Both the 175 mL and the 500 mL heating jackets are capable of reaching 400 F 204 C but lower fluid volumes due to fluid expansion at higher temperatures limit the 175 mL units to a useful working temperature of 300 F 149 C Anyone running tests above 350 F 177 C must substitute a complete set of o rings after each and every test OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com Specifications Size Weight Shipping Size Shipping Weight Maximum Temperature Maximum Pressure Cell 7 5 x 11 x 23 5 19 1 x 27 9 x 59 7 cm 27 lb 12 3 kg 17 x 23 5 x 12 5 43 2 x 59 7 x 31 8 cm 38 Ib 17 2 kg 400 F 204 C 1 500 PSI 10 343 kPa Maximum Pressure Receiver 750 PSI 5 171 kPa Pressure Source Test Cell Capacity Voltage Heater Nitrogen Tank Sold Separately 175 mL 115 VAC 5 Amps 50 60 Hz 230 VAC 3 Amps 50 60 Hz 400 Watt OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com Components OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com Supplies 153 14 154 10 170 19 170 35 164 32 165 40 4 170 05 1 70 09 170 10 5170 11 4170 15 170 21 4170 25 170 30
17. form to these warranties or to the specifications applicable thereto and OFITE is so notified in writing upon discovery OFITE shall promptly repair or replace the defective products Notwithstanding the fore going OFITE s warranty obligations shall not extend to any use by the buyer of the products in conditions more severe than OFITE s recommendations nor to any defects which were visually observable by the buyer but which are not promptly brought to OFITE s attention In the event that the buyer has purchased installation and commissioning services on applicable products the above warranty shall extend for an additional period of twelve 12 months from the date of the original warranty expiration for such products In the event that OFITE is requested to provide customized research and development for the buyer OFITE shall use its best efforts but makes no guarantees to the buyer that any products will be provided OFITE makes no other warranties or guarantees to the buyer either express or implied and the warranties provided in this clause shall be exclusive of any other warranties including ANY IMPLIED OR STATUTORY WARRANTIES OF FITNESS FOR PURPOSE MERCHANTABILITY AND OTHER STATUTORY REM EDIES WHICH ARE WAIVED This limited warranty does not cover any losses or damages that occur as a result of Improper installation or maintenance of the products e Misuse Neglect e Adjustment by non authorized sources e Improper en
18. g cover This may require a strap wrench Remove the spring case Remove the rubber diaphragm 143 00 1 from inside the spring case Remove the thrust plate 143 00 7 Using a wrench loosen and remove the brass colored retainer The thrust pin and seat are now exposed and can be removed from the base Replace the spring repair kit Replace the seat holder repair kit Replace the thrust pin and the Teflon seat which can be attached before insertion repair kit Replace the brass retainer and tighten with a wrench Replace the thrust plate with the curved edges downward Place a new rubber diaphragm inside the Soring case Replace the spring case and hand tighten OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 31 Regulator Maintenance and Trouble Shooting Symptoms Cause Resolution Gas leak at the regulator outlet when Seat leak or creep Repair the the adjusting screw is loosened fully regulator counterclockwise downstream valves are closed regulator case lator the regulator flow open Repair the regulator Gas leak from any pipe thread joint Loose fitting Remove the connec tion Clean the affected surfaces Reapply Teflon tape and tighten Gas leak from relief valve Faulty relief valve replace the valve Seat leak or creep Repair the regulator Inconsistent repeat readings Seat sticking Repair the regulator Bad pressure gauge
19. gen Cylinder R H Thread 1 70 37 Not included with Manifold OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 16 Needle Valve 170 32 Valve Stem 170 16 Heating Jacket 1 70 00 1 170 01 1 Cell Cap 170 14 Regulator 143 00 200 PSI Gauge 143 01 CO Puncture Head Assembly 143 02 10 Barrel for CO Bulb 143 03 Safety Bleeder Valve 143 06 mm Needle Valve 170 32 Manifold Block 170 20 Safety Pin 171 23 1 With Lanyard Valve Stem O ring 170 17 Test Cell Body 170 12 Test Cell O ring 170 13 3 Locking Screw 1 70 26 1 Valve Stem 170 16 Safety Pin 171 23 1 With Lanyard Receiver Body 1 70 28 Support Rod 170 71 Receiver O ring 1 70 07 Not Shown OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 17 Q U ic k Sta rt 1 Pre heat the heating jacket to 10 F 6 C above the desired test temperature 2 Place a thermometer into the heating jacket 3 Check all o rings and coat with a thin coat of silicone grease 4 Install o rings in the cell cell cap and valve stems 5 Stir the test sample for ten 10 minutes with a high speed blender 6 Install and tighten completely with a wrench the inlet valve stem 7 Invert the cell and fill with test fluid being careful not to get fluid on the cell o ring
20. hen filled they may be pressurized to 2 216 PSI 153 Bar They have a standard CGA 580 Compressed Gas Association left handed thread fitting connection CGA 590 right handed thread fittings are available upon request A dual Nitrogen manifold assembly is used and pressurizes both the top and the bottom or back pressure devices simultaneously or individually as needed Temperature Normally when one experiences a loss of pressure it is not due to a failure of the metal alloy in the cell but rather is a failure of the o ring or elastomer which provides the seal These o ring may deform or melt under elevated temperatures usually over 400 F 204 C causing a pressurization failure of the cell which is often sudden and catastrophic For example if the valve stem o ring suddenly fails then steam at 400 F and under great pressure may shoot outward horizontally in one or several directions A safety shield should always be used when operating any HTHP Filter Press and especially when one is going to extreme temperatures and pressures Above 350 F 176 C all o rings must be replaced after each and every test OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 9 Heating Jacket Turn the thermostat knob on the front of the metal plate to change the temperature of the heating jacket The thermostat cover is marked from 1 to 10 and each whole number represents a separate temperatu
21. ities of solids present in the fluid and their physical and electro chemical interactions all of which are affected by changing temperatures and pressures OFITE manufactures and provides HTHP filtration units in two basic sizes 175 mL and 500 mL capacities Both are used extensively throughout the world and in all environments but in general the 175 mL units are designed for field portability while the larger 500 mL units are designed for laboratory usage at higher temperatures and pressures All OFITE Filtration devices fully conform to American Petroleum Institute API specifications A complete HTHP Filter Press consists of a controlled pressure source usually Nitrogen pressurization or Carbon Dioxide bulbs for the 175 mL units Top and bottom pressure manifolds are provided to simulate the differential pressures found in a down hole environment and to prevent evaporation of the base fluid if exceeding the boiling point of that fluid The test cells are provided in a variety of assemblies depending upon the type of fluid tested the filter media and the temperatures and pressures desired The test cells are encased inside a heating jacket which is adjustable A variety of filter media are available the most common being standard API filter paper cement screens and ceramic filters The ceramic filters may be obtained to match the pore throat or permeability of the formation Natural formation filters or cores may also be used of di
22. ld is supplied which regulates pressure to both the inlet and outlet ends of the pressure cell A single Nitrogen regulator is available if dual pressurization is not required Nitrous Oxide NO is available in the same sized bulbs as CO but should never be used as a pressure source for HTHP Filtration Under high temperatures and pressures Nitrous Oxide can detonate in the presence of grease oil or carbonaceous material Nitrogen Bottle 1 70 37 High Pressure Nitrogen Cylinder Optional 171 31 Optional OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 11 Working Pressure OFITE clearly stamps the working pressure of the cell assembly along with the assembly serial number on each cell body and cell cap These pressure limits should never be exceeded on the pressure manifolds and fluid volumes inside the cell should strictly comply with instructions see page 13 However in the past HTHP cells and caps from various manufacturers were often not stamped or in some cases very old cell assemblies were stamped 2500 Cell assemblies with set screw secured caps should never be taken to 2 500 PSI under any temperature or condition The 175 mL HTHP Filter Press 170 00 and 1 70 01 are furnished with a standard 1 500 PSI working pressure cell assembly OFITE also manufactures HTHP cells with a 2 000 PSI working pressure Please note Important the 1 500 PSI and 2 000 PSI c
23. listed below are not included in the HTHP Filter Press but they are items that will enable the technician to perform a more uniform and reproduc ible test while maintaining a high degree of safety As optional items the us age is not compulsory but consideration should be given to these items when running tests at elevated temperatures and pressures Some of the items will be used only on cell assemblies using set screws as fasteners while others should be implemented when operating all filtration equipment Interval Timer 60 minute Cell Cap Removal Tool 155 20 1 70 33 Set Screw Cell Assemblies Only Cell Carrying Tool 170 40 HTHP Pressure Relief Tool 170 91 To release trapped pressure A Safety Clamp 2170 92 Set Screw Cell Assemblies Only Safety Shield 4171 06 OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com T High Pressure Nitrogen Assy Thermocouple Assembly 171 31 171 45 1 Direct temperature measurement Of the fluid Inside the Cell Stand for HTHP Cell Assembly 171 190 028 OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 8 Pressure and Temperature Considerations Safety Do not use or reconfigure this equipment in a manner not specified in this manual Pressure There are two reasons for operating at elevated pressures when performing a filtra
24. ll by opening the outlet valve stem as the filter cake may seal off the cell Note Safe Release of Pressure from a Cell A good indication that pressure is trapped inside the cell body occurs if the set screws are unusually difficult to loosen especially the 4th 5th and 6th ones and the cell cap begins to extrude out of the cell body N as the set screws are progressively loosened To relieve any trapped pressure an OFITE Pressure Relief Tool 7170 91 may be inserted through the inlet cell cap hole which will relieve any trapped pressure inside the cell Ensure this function is performed on the inlet side of the cell as the filter cake may seal off the outlet end of the cell Important 35 Loosen but do not remove the six cap locking screws and separate the cap from the cell with a slight rocking motion The OFITE Cell Cap Removal Tool 4170 33 makes it easy to remove tight difficult to remove cell caps which may have slightly heat expanded 36 There are several ways to remove the filter along with the filter cake a Hold the cell and invert it over a sink and let the weight of the fluid inside the cell push the disk out b Careful manipulation with a spatula will often remove a filter and filter cake intact without losing fluid 37 Discard the fluid inside the cell unless it is required for further testing Save the filter cake for analysis 38 Clean and dry the apparatus thoroughly after each use 39 In
25. m Specially Hardened for Filter Presses Adjustable Wrench 6 inch 171 24 1350 750 PSI 9 308 5 171 kPa Nitrogen Manifold 1170 20 170 32 171 22 171 24 001 171 24 1 171 24 2 171 24 3 171 24 4 171 24 5 171 25 1 171 25 2 171 26 171 28 171 38 171 40 171 42 171 90 06 171 90 07 171 90 13 Optional 170 37 170 13 3 Manifold Block NPT Male Needle Valve x 7 Retainer Pin Regulator Modified Qty 2 Chrome Nut R H Reg Inlet CGA 580 Nipple with Filter Flare x Ye to FNPT Female 1 4 NPT Pipe Plug 316 Stainless Steel 1 4 NPT Street Tee 316 Stainless Steel 74 Qty 2 Relief Valve set at 750 PSI 5171 kPa Relief Valve set at 1350 PSI 9308 kPa Hose 50004 3 16 x 35 Qty 2 Dual Manifold Body Gauge 1 000 PSI 2 4 NPT Bottom Gauge 1 500 PSI 2 4 NPT Bottom Gauge 3 000 PSI 2 14 NPT Bottom Ys MNPT x FNPT Reducing Bushing 316 Stainless oteel Hex Nipple 4 NPT 316 Stainless Steel Qty 2 Adapter 4 Flare x 14 Male NPT Nitrogen Cylinder 21 x 7 Right hand Thread Test Cell O ring Viton 170 00 3 SP Spare Parts for 170 00 3 143 00 1 143 07 153 14 154 10 170 05 5170 07 5170 10 1170 11 5170 13 5170 16 4170 17 170 19 170 26 4170 27 4171 22 4171 32 Diaphragm for Airco Regulator Qty 2 Repair Kit for Regulator 143 00 Qty 2 Graduated Cylinder 50 mL x 1 mL Qty 2 Dual Scale Thermometer with Dial 5 Stem 50
26. monitor the pressure gauges If at any time during the test the pressure inside the cell rises above the setpoint carefully open the needle valve on the top pressure assembly just enough to bleed off the excess pressure Then close the valve If the cell pressure decreases due to collection of filtrate increase the pressure with the inlet regulator 22 To collect filtrate carefully open the needle valve on the bottom of the back pressure receiver while holding a graduated cylinder to the valve port Close the valve immediately after the outlet pressure just begins to decrease and filtrate is collected Collect filtrate at 10 seconds 1 minute 7 5 minute and 30 minute intervals The initial 10 second collection is precautionary in nature as a fluid with little filtration properties may fill up the 15 mL receiver tube almost immediately potentially damaging the regulator Do not record the 10 second volume collected but do record the volume collected at the other time intervals Timers pre set to 7 5 minutes and 30 minutes are helpful While collecting filtrate maintain the test temperature within x 5 F 43 C If the back pressure rises during the test cautiously reduce the pressure by opening the needle valve on the receiver and drawing off some of the filtrate into the graduated cylinder 23 After 30 minutes the test is over Immediately close tighten the top and bottom valve stems to seal off the cell 24 Allow a minimum of
27. opening loosening the needle valve on the inlet manifold block Release the bottom pressure from the regulator by opening the receiver needle valve and collect any remaining filtrate Remove the top inlet manifold block by releasing the retainer pin and lanyard OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 19 41 42 43 44 45 46 47 48 49 90 91 02 53 54 Remove the back pressure receiver assembly by releasing the retainer pin and lanyard Carefully drain any residual filtrate into the graduate cylinder Record the amount of filtrate collected in the graduate cylinder by multiplying the amount in milliliters by 2 Carefully remove the cell from the heating jacket Cool the cell for one hour at room temperature or for 10 minutes in cool water It should be below 100 F 38 C Place the cell upright with the inlet side up Open loosen the inlet valve stem There should be a noticeable release of pressure Loosen the set screws Do this with the cell positioned downward as much as possible or horizontal Remove the cell cap from the cell body Separate the filter cake from the filter media Gently wash the liquid from the filter cake Measure and record the thickness of the filter cake to the nearest 2 inch or millimeter Report the description of the filter cake thin hard rubbery etc Thoroughly cl
28. ow on the cell cap lines up with the arrow on the cell body and slowly push the cell cap into the cell Ensure that the o ring does not slip out of the o ring groove during insertion of the cell cap Not attaching or tightening the valve stem on the cap makes this operation easier Arrow 11 Use the Allen wrench to tighten the six locking set screws into the cell and secure the cell cap in place Use hand touch make sure that all of the set screws are completely tightened The cell may become permanently stuck inside the heating jacket if one or more set screws are left protruding from the cell 12 Install the valve stem into the cell cap Use a wrench to tighten it completely 13 Invert the cell and holding the valve stem place the cell in the heating jacket with the outlet filter side of the cell pointed down Rotate the cell inside the heating jacket so that the pin in the bottom of the heating well seats into the hole in the bottom of the test cell This will anchor the cell in the well and prevent it from rotating as the valve stems are opened and closed Check the inlet and outlet valve stems with a wrench to ensure they are tight 14 Move the thermometer from the heating jacket to the thermocouple hole on top of the test cell The heating time of the sample should be one hour no more and no less Set a timer to 60 minutes Begin the heating at this time Do not initiate filtration when the thermometer indicates the desire
29. re Each filter press will heat up a little differently so it is a good idea to mark with a pen directly on the face plate of the thermostat cover the temperature which corresponds with each number The actual temperature of the heating jacket is measured with a stem thermometer and then the thermometer is placed into the cell body The heating jacket will get very hot during the test so be careful not to touch the outside of the jacket at any time during the heat up period or the test It is especially easy to get burned when installing or removing the back pressure receiver as the technician is working in a very confined space The power cord is supplied for either 115 Volts or 230 Volts and due to the various types of plug connectors around the world it may be necessary to change the plug on the end of the power cord The power cable is 8 feet in length and the heating jacket should be placed no farther than 8 feet from the appropriate electrical outlet The heat up time will vary from one instrument to the next and the pilot light will turn on when the set temperature has been reached The temperature of the fluid inside the cell however will not be at the set temperature so always allow one hour of heating time for the fluid after the cell has been fully inserted into the heating jacket OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 10 The HTHP Filter Press is a very safe inst
30. rrying Tool 170 40 makes this a simple and safe operation DO NOT remove the heated cell using pliers or an open ended wrench N attached to the valve stem This is very dangerous and could cause Important serious damage The test cell will still be under approximately 600 PSI 4 140 kPa pressure To avoid possible serious injury position the cell with the outlet N end down and cool it to room temperature before disassembling The Important cell must be below 100 F 38 C Cool for at least one hour at room temperature before loosening the cap locking screws 34 Place the cooled cell upright with the outlet side down The optional stand for the HTHP cell assembly 171 190 028 makes a great cell holder This will help preserve the filter cake Open loosen the Inlet valve stem to bleed off pressure from the cell body There should be a noticeable release of pressure from the cell otand for HTHP Cell Assembly 171 190 028 OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 26 Hold a rag or piece of paper over the valve stem in order to catch any liquid or solids that might be ejected under pressure from the cell This will help prevent an unsightly residue build up on the ceiling which may occur over time It may be necessary to return the cell to the heating jacket and use the stop pin in order to loosen the valve stem 9 Pressure should NOT be relieved from the ce
31. rument to operate as long as the instructions are strictly followed It is imperative that the technician thoroughly understands the assembly and disassembly procedures and also why the order of steps is in place Care should be taken to never use defective parts and that OFITE s temperature pressure and fluid volume limits are strictly adhered to at all times The heating jacket and cell will get very hot during the normal duration of the test so the operator should take care to avoid burns The operator should be careful when attaching and removing pressure manifolds from the heating jacket especially the back pressure receiver assembly which involves operating in a small confined space Safety Retainer Pin Always use a Safety Retainer Pin with an attached lanyard and get in the habit of securing the cotter pin to the pin Improper placement of retainer pins in the past have resulted in the pressure manifold separating from the filter press which can cause damage to the equipment Retainer Pin with Lanyard 171 23 1 Safety Retainer Pin with Lanyard The 175 mL HTHP Filter Press 170 00 3 and 170 01 3 uses Nitrogen as the pressure source for both the inlet and the back pressure Nitrogen is more inert or less chemically reactive than Carbon Dioxide and therefore itis used extensively in filtration control analysis where chemical reactions tend to occur when subjected to elevated temperatures and pressures A dual Nitrogen manifo
32. spect all o rings for deformities and replace as necessary Replace all o rings if the test was conducted above 350 F V After each test the HTHP filter press should be left so that a new test may be Tip performed with no clean up and a minimum of assembly OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 27 Data Filtrate Volume The HTHP filter press has a filtration area of 3 55 in 22 9 cm This is half the area of a standard filtration test which is 7 1 in 45 8 cm To compare the results of this test to a standard filtration test double the total filtrate vol ume collected for the full 30 minutes Vs 7 2 V4 Spurt Loss Optional Spurt Loss is the amount of filtrate collected before the filter cake has had a chance to form and is expressed in millimeters To calculate the spurt loss use the following equation V 2 Ln Vao V 2 2V_ V30 gt bi 2V 59 Where V Standard Filtrate Volume mL V Spurt Loss V Filtrate volume collected after 7 5 minutes doubled Va Filtrate volume collected after 30 minutes doubled Filter Cake Wash the filter cake on the paper with a gentle stream of water Measure and report the thickness of the filter cake to the nearest 2 0 8 mm A ruler with the zero mark at the very edge of the ruler is useful here Cake descriptions may be subjective and such notations such as hard soft r
33. t elevated temperatures and pressures The maximum pressure rating is 1 500 PSI and the temperature is 400 F 204 C Most tests conducted with the 175 mL capacity filter presses under API standards operate at an inlet pressure of 600 PSI and with temperatures up to 350 F 176 C The cell bodies and cell caps are scribed with serial numbers so that the same cap and same cell bodies are used on each and every test resulting in more reproducible results Additional information includes the part number temperature rating the alloy and pressure rating of the cell All OFITE HTHP cell assemblies are made of Stainless Steel For very corrosive environments cell assemblies made of Hastelloy C 276 or Inconel are available and recommended OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 15 Diagrams Dual Nitrogen Manifold 171 24 Gauge Gauge Gauge 1500 PSI 3000 PSI 1000 PSI 7 4 NPT Ya NPT Ya NPT 171 40 171 42 171 38 Manifold Hex Nipple Body 4 NPT 171 28 4171 90 07 Regulator Right 171 24 001 Regulator Left 171 24 002 pp Reducing Bushing 171 24 001 Pipe Plug 171 24 4 Street Tee Adapter Male Y NPT ES Ya Flare Hose 171 24 5 ey 171 90 13 4171 26 Needle Relief Valve Valve Y 750 PSI 4170 32 171 25 1 Relief Valve Elbow 1350 PSI Ya Flare x Y FNPT 4170 32 171 24 3 Nitro
34. test temperature If the test is conducted at a temperature less than the boiling point of water then no back pressure will be required and filtrate may be collected directly into a graduated cylinder If however tests are conducted above the boiling point of water then as this temperature exceeds 212 F 100 C the back pressure must be increased above the vapor pressure at the test temperature in order to prevent vaporization of the filtrate If running a standard API test the 500 PSI differential pressure must be maintained so the top pressure will have to be increased 500 PSI over whatever the back pressure is The table below shows the back pressures recommended for various test temperatures ee eee E 500 OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 24 19 Open loosen the Inlet valve stem Y turn to pressurize the sample Maintain this pressure on the fluid until the temperature has stabilized This will prevent vaporization of the test solution if heating above the boiling point of the liquid 20 After the one hour heat up time increase the pressure on the inlet pressure unit to 500 PSI 3 448 kPa more than the back pressure 21 Open loosen the bottom valve stem 7 turn to initiate filtration as soon as possible Start the filtration test at this time Set a timer to 30 minutes If spurt loss is being measured set a second timer to 7 5 minutes Closely
35. tion analysis 1 To test fluids at temperatures above the boiling point the vessel must be pressurized which in turn elevates the vapor pressure boiling point so that the fluid remains liquid and does not turn to steam 2 If testing for drilling applications pressurization will more approximate down hole conditions enabling the technician to match both bottom hole temperatures and pressures For temperatures less than 200 F 93 C a back pressure receiver is not required as the filtrate will not reach the boiling point However when operating above the boiling point of water a suitable back pressure receiver is required otherwise the test fluid will turn to steam and the test is invalidated The standard receiver tube supplied with the 175 mL HTHP Filter Press holds 15 mL of filtrate so it is very important that the receiver outlet ball valve is opened after approximately ten seconds of filtrate collection as a fluid with poor filtration qualities can easily fill the 15 mL receiver tube almost instantaneously If this happens the filtrate hopefully will all be ejected from the safety bleeder valve but if there is too much fluid volume the liquid may end up inside the regulator rendering it useless which will require servicing by a knowledgeable technician Nitrogen is commonly used as a pressure source A small Nitrogen cylinder 4170 37 size 21 x 7 Optional provides the pressure source These cylinders are shipped empty but w
36. ubbery and fine etc convey adequate information on cake quality OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 28 Maintenance 1 Aaa cell assemblies should periodically be checked a Cell Corrosion Stress cracking or pitting b Cylinder Shear Raised areas above the cell set screw holes c Elongated set screw holes in the cell bodies d End Cap Compression Elongated set screw depressions on cell caps e Set screws which are no longer tapered on the inside f Elastomers Check for flat spotting and melting g Valve stems should be sharply pointed and not dull on outlet side 2 Always thoroughly clean up after each tests a Replace all elastomers if previous test was in excess of 300 F 149 C b Clean out and blow dry if possible the back pressure receiver c Cell body must be completely cleaned with special attention to the o ring groove 3 Periodically check for leaks a Cell Assembly Immerse sealed pressurized cell assembly in a sink filled with water look for bubbles b Top Pressure Assembly Immerse regulator valves and sealed cell assembly in a sink full of water and look for bubbles Hold assembly by the gauge and do not let the gauge get wet c Back Pressure Receiver Similar to B Hold assembly by the gauge and do not allow it to get wet OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 8
37. vironment e Excessive or inadequate heating or air conditioning or electrical power failures surges or other irregularities e Equipment products or material not manufactured by OFITE e Firmware or hardware that have been modified or altered by a third party e Consumable parts bearings accessories etc Returns and Repairs Items being returned must be carefully packaged to prevent damage in shipment and insured against pos sible damage or loss OFITE will not be responsible for equipment damaged due to insufficient packaging Any non defective items returned to OFITE within ninety 90 days of invoice are subject to a 15 restock ing fee Items returned must be received by OFITE in original condition for it to be accepted Reagents and special order items will not be accepted for return or refund OFITE employs experienced personnel to service and repair equipment manufactured by us as well as other companies To help expedite the repair process please include a repair form with all equipment sent to OFITE for repair Be sure to include your name company name phone number email address detailed description of work to be done purchase order number and a shipping address for returning the equipment All repairs performed as repair as needed are subject to the ninety 90 day limited warranty All Certified Repairs are subject to the twelve 12 month limited warranty Returns and potential warranty repairs require a
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