OfiTE 170-182 Скачать руководство пользователя страница 3

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com

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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 condi

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tions 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 quantities 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, usu

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ally 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 for

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mation filters or cores may also be used of differing 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 reach

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ing 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 com

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plete set of o-rings after each and every test.

Intro

Содержание 170-182

Страница 1: ...ped Test Cell and N2 Pressuring Manifold 170 182 115 V 170 182 1 230 V Instruction Manual Updated 6 20 2017 Ver 3 0 OFI Testing Equipment Inc 11302 Steeplecrest Dr Houston Texas 77065 U S A Tele 832 3...

Страница 2: ...USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 1 Intro 2 Specifications 3 Components 4 Safety 8 Quick Start 12 Operation 15 Data 20 Cell Cap Assembly 21 Maintenance 22 Diagrams 24 Test Cell 25 Wa...

Страница 3: ...OFITE Filtration devices fully conform to American Petroleum Institute API specifications A complete HTHP Filter Press consists of a controlled pressure source usu ally Nitrogen pressurization or Car...

Страница 4: ...Shipping Weight 38 lbs 17 2 kg Maximum Temperature Heating Jacket 400 F 204 C Maximum Temperature Cell 500 F 260 C Maximum Pressure Cell 5 000 PSI Maximum Pressure Receiver 750 PSI 5 1 MPa Pressure So...

Страница 5: ...15 mL Stainless Steel Tube for N2 144 11 90 Street Ell 144 15 Plate Brass Bushing NPT Male to NPT Female 170 07 O ring 170 28 Receiver Body 170 32 NPT Male Needle Valve 171 23 1 Safety Pin with Lanya...

Страница 6: ...71 38 1 000 PSI Gauge 2 NPT Bottom 171 40 1 500 PSI Gauge 2 NPT Bottom 171 42 3 000 PSI Gauge 2 NPT Bottom 171 90 06 MNPT FNPT Reducing Bushing 316 Stainless Optional 170 13 O ring for Test Cell Buna...

Страница 7: ...nician 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 r...

Страница 8: ...eplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 7 Thermocouple Assembly 171 45 1 Direct temperature measurement Of the fluid Inside the Cell Stand for HTHP Cell Assem...

Страница 9: ...eceiver is not required as the filtrate will not reach the boiling point However when operat ing above the boiling point of water a suitable Back Pressure Receiver is required otherwise the test fluid...

Страница 10: ...eful 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 technici...

Страница 11: ...ng 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 pin...

Страница 12: ...d should be used for tests up to 400 F only The second set is made from Viton 90D OFITE suggests that all o rings cell caps cell bodies and valve stem are changed each time after running a test of 350...

Страница 13: ...cell cap into the cell and tighten it completely 11 Screw a valve stem into the inlet cell cap and tighten it completely 12 Pour the test fluid into the cell Leave adequate space for fluid expansion...

Страница 14: ...e both valve stems 29 Turn both regulator T screws counterclockwise 30 Open the outlet valve on the back pressure receiver to collect any remain ing filtrate 31 Open the valve on the manifold block to...

Страница 15: ...4 Manifold Block 170 20 Heating Jacket 171 00 or 171 01 Thermostat 171 71 Thermometer 154 10 Back Pressure Receiver 171 10 Nitrogen Manifold 171 24 Valve Stem 170 16 Regulators Nitrogen Connection Mal...

Страница 16: ...y Discard any components that show signs of corrosion damage or wear 4 Inspect all o rings Replace any that show signs of damage or wear Looks for nicks cuts or brittle o rings Replace all o rings aft...

Страница 17: ...id 13 Invert the cell body and carefully pour the sample into the cell Leave 2 5 1 cm void space for thermal expansion Be careful not to spill fluid on the o ring shoulder inside the cell 14 Place an...

Страница 18: ...nlet on the pressure manifold Open the pressure release valve on the Nitrogen bottle and note the bottle pressure as registered on the middle manifold gauge 24 Keeping the valve stems closed adjust th...

Страница 19: ...ted Collect filtrate at 10 seconds 1 minute 7 5 minutes and 30 minutes The initial 10 second collection is precautionary in nature as a fluid with little filtration properties may fill up the 15 mL re...

Страница 20: ...l body Pressure cannot be relieved from the cell by opening the outlet valve stem as the filter cake will seal off the cell It is a good idea to open the valve stem with the cell inside a sink or with...

Страница 21: ...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 V1 2 V7 5 V30 V7 5 2 2V7 5 V...

Страница 22: ...d the cap 3 Place the retaining ring 130 81 040 into the groove around the outside of the cap Make sure it engages completely around the circle The cap should turn freely inside the locking ring 4 Pla...

Страница 23: ...old separately To replace the seat assembly a Unscrew the spring case housing cover This may require a strap wrench b Remove the spring case c Remove the rubber diaphragm from inside the spring case d...

Страница 24: ...or inlet filter 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 Fau...

Страница 25: ...e 170 32 Manifold Block 170 20 Safety Pin 171 23 1 With Lanyard Outlet Valve Stem 170 16 Nitrogen Manifold Primary Pressure Gauge 171 40 Source Pressure Gauge 171 42 Back Pressure Gauge 171 38 Connect...

Страница 26: ...ap 171 190 033 S Cell Body 171 190 020 S Retaining Ring 130 81 040 Outlet End Cap 171 190 032 S Cap Screw 171 190 023 Detachable Screen Mesh 170 18 O ring 228 Viton 90D 171 190 060 NPT Rupture Plug 5...

Страница 27: ...y losses or damages that occur as a result of Improper installation or maintenance of the products Misuse Neglect Adjustment by non authorized sources Improper environment Excessive or inadequate heat...

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