OfiTE 170-00-3 User manual
HTHP Filter Press for Drilling Fluid Testing
with 175-mL, Single-Capped Test Cell and N2Pressuring Manifold
170-00-3 (115 V)
170-01-3 (220 V)
Instruction Manual
Updated 6/14/2019
Ver. 6
OFI Testing Equipment, Inc.
11302 Steeplecrest Dr. · Houston, Texas · 77065 · U.S.A.
Tele: 832.320.7300 · Fax: 713.880.9886 · www.ote.com
©Copyright OFITE 2015
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 1
Intro..................................................................................................2
Specications .................................................................................3
Components ...................................................................................4
Safety...............................................................................................9
Diagrams .......................................................................................16
Quick Start ....................................................................................18
Operation.......................................................................................21
Data................................................................................................28
Maintenance..................................................................................29
Warranty and Return Policy ........................................................33
Table of
Contents
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 2
Intro The OFI Testing Equipment (OFITE) High Temperature High Pressure
(HTHP) Filter Press is designed to evaluate the ltration characteristics
of drilling uids, cement slurries, fracturing uids, and completion uids
under elevated temperatures and pressures. Evaluating uids under HTHP
conditions similar to the downhole environment is of paramount importance.
Fluid properties must be monitored while under high temperatures and
pressures as ltration 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 uid and their physical and electro-chemical interactions,
all of which are affected by changing temperatures and pressures.
OFITE manufactures and provides HTHP ltration 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 eld 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) specications.
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 uid if exceeding the boiling point of that uid. The
test cells are provided in a variety of assemblies, depending upon the type
of uid tested, the lter media, and the temperatures and pressures desired.
The test cells are encased inside a heating jacket, which is adjustable.
A variety of lter media are available, the most common being standard
API lter paper, cement screens, and ceramic lters. The ceramic
lters may be obtained to match the pore throat or permeability of
the formation. Natural formation lters 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.
The 175 mL has a maximum temperature of 350°F (177°C) and the 500 mL
heating jackets are capable of reaching 400°F (204°C). However, lower
uid volumes due to uid 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.ote.com 3
Specications Size: 7.5" × 11" × 23.5" (19.1 × 27.9 × 59.7 cm)
Weight: 27 lb (12.3 kg)
Shipping Size: 17" × 23.5" × 12.5" (43.2 × 59.7 × 31.8 cm)
Shipping Weight: 38 lb (17.2 kg)
Maximum Temperature
(Heating Jacket): 350°F (177°C)
Maximum Pressure (Cell): 2,000 psi (13.8 MPa)
Maximum Pressure (Receiver) 750 psi (5,171 kPa)
Pressure Source: Nitrogen Tank (Sold Separately)
Test Cell Capacity: 175 mL
Voltage: 115 VAC, 5 Amps, 50/60 Hz
230 VAC, 3 Amps, 50/60 Hz
Heater: 400 Watt
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 4
Components Supplies:
#153-14 Glass Graduated Cylinder, 50 mL × 1 mL
#154-10 Metal Dial Thermometer, 5" Stem, Dual Scale: 50° - 500°F / 0° -
250°C
#170-19 Filter Paper, 2 ½" (6.35 cm), Specially Hardened for Filter Press-
es, Box of 100
#170-35 Adjustable Wrench, 6 inch
#170-00-1 Heating Jacket (115V)
#170-01-1 Heating Jacket (230V):
#130-10-52 Jam Nut, ⅜"-24, Stainless Steel, Qty: 2
#130-38-005 Strain Relief
#165-40-4 Power Cable (230 Volt Only)
#170-05 Thermostat
#170-09 Insulation Board
#170-10 Thermostat Pilot Light
#170-11 Heating Element, 115V, 200W, Qty: 2
#170-15 Base
#170-21 Stand Support Rod, Qty: 2
#170-25 Aluminum Well
#170-30 Stainless Steel Thermostat Cover
#170-30-001 Fish Paper
#170-44 Rubber Foot, ½", Qty: 4
#171-32 Midget Knob
#171-82 Power Cord, 8', with Male Plug 8, 16/3 SJ, Round (115 Volt
Only)
Assemblies:
#170-06-1 Back Pressure Receiver, 15 mL Stainless Steel Tube for N2
#144-11 Street Ell, 90, ⅛"
#144-15 Plate Brass Bushing, ⅛" NPT Male to ⅛" NPT Female
#170-07 O-ring
#170-28 Receiver Body
#170-32 NPT Male Needle Valve, ⅛" × ⅛"
#171-23-1 Safety Pin with Lanyard
#170-12-2 175-mL, Single-End Test Cell, 2000 psi (13.8 MPa)
#170-13-3 O-ring for Cell, Viton 75, Qty: 2
#170-16 Valve Stem, Qty: 2
#170-17 O-ring for Valve Stem, Qty: 4
#170-26-1 Stainless Steel Locking Screw, Hardened, Qty: 6
#170-27 Allen Wrench, "
#170-45-2 Cell Body, 316 Stainless Steel
#171-21 Cell Cap with 60 Mesh Screen, 2000 psi (13.8 MPa)
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 5
#171-24 1350 / 750 psi (9,308 / 5,171 kPa) Nitrogen Manifold
#142-39 Pipe Plug, "
#170-20 Manifold Block
#170-32 NPT Male Needle Valve, ⅛" × ⅛"
#171-23-1 Safety Pin with Lanyard
#171-24-001 Regulator, Modied, Qty: 2
#171-24-1 Chrome Nut, R.H., Reg Inlet CGA-580
#171-24-2 Nipple with Filter
#171-24-3 Flare × ⅛" to FNPT Female, ¼"
#171-24-5 NPT Street Tee, 316 Stainless Steel, ¼", Qty: 2
#171-25-1 Relief Valve set at 750 psi (5,171 kPa)
#171-25-2 Relief Valve set at 1,350 psi (9,308 kPa)
#171-26 Hose, 5000#, " × 3', Qty: 2
#171-28 Dual Manifold Body
#171-38 Gauge, 1,000 psi, 2", ¼" NPT Bottom
#171-40 Gauge, 1,500 psi, 2", ¼" NPT Bottom
#171-42 Gauge, 3,000 psi, 2", ¼" NPT Bottom
#171-90-06 Reducing Bushing, ⅛" MNPT × ⅛" FNPT, 316 Stainless
Steel
#171-90-07 Hex Nipple, ¼" NPT, 316 Stainless Steel, Qty: 2
#171-90-13 Adapter, ¼" Flare × ¼" Male NPT
Optional:
#170-37 Nitrogen Cylinder, 21" × 7", Right-hand Thread
#143-00-1 Diaphragm for Airco Regulator
#143-07 Repair Kit for Regulator (#143-00)
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 6
Part Number Description Quantity
#143-00-1 Diaphragm for Concoa Regulator 2
#143-07 Repair Kit for Concoa Regulator 2
#153-14 Graduated Cylinder, 50 mL × 1 mL 2
#154-10 Dial Thermometer, 5" stem, 5 – 500°F & 0 – 250°C 1
#170-05 Thermostat 1
#170-07 O-Ring, Nitrile 70D 1
#170-10 Thermostat Pilot Light 1
#170-11 Heating Element 115 Volt – 200 W 2
#170-13-3 O-ring for test cell and cap, Viton 75D 50
#170-16 Valve Stem, for cell pressure and de-pressuriza-
tion 4
#170-17 O-ring, for Valve Stem, Viton 75D 100
#170-19 Filter Paper, 2 ½" (6.35 cm), hardened for Filter
Press, 100/box 10
#170-26-1 Locking Cap Screw, Hardened Alloy Steel 24
#170-27 Allen Wrench, "1
#171-23-1 Safety Pin with Lanyard 2
Optional:
#170-00-3-SP Spare Parts Kit
Spare parts listings are intended to be used as a reference for future pur-
chases. Everyone’s consumable requirements will be different, and replace-
ment quantities needed will depend upon the number of test performed on a
daily and/or weekly basis.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 7
Optional Items for HTHP Filtration Testing:
The items 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
reproducible test while maintaining a high degree of safety. As optional items,
the usage 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 ltration equipment.
Interval Timer, 60 minute
(#155-20)
Cell Cap Removal Tool
(#170-33)
(Set Screw Cell Assemblies Only)
Safety Clamp (#170-92)
(Set Screw Cell Assemblies Only)
HTHP Pressure Relief Tool
(#170-91)
(To release trapped pressure)
Safety Shield (#171-06)
Cell Carrying Tool (#170-40)
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 8
High Pressure Nitrogen Assy.
(#171-31)
Thermocouple Assembly
(#171-45-1)
(Direct temperature measurement
Of the uid 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.ote.com 9
Safety Pressure and Temperature Considerations
Do not use or recongure this equipment in a manner not specied in this manual.
Pressure
There are two reasons for operating at elevated pressures when performing a
ltration analysis:
1. To test uids at temperatures above the boiling point, the vessel must
be pressurized, which in turn elevates the vapor pressure (boiling point)
so that the uid 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 ltrate 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 uid 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 ltrate, so it is very important that the
receiver outlet ball valve is opened after approximately ten seconds of
ltrate collection, as a uid with poor ltration qualities can easily ll the
15 mL receiver tube almost instantaneously. If this happens the ltrate
hopefully will all be ejected from the safety bleeder valve, but if there is too
much uid 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
(#170-37), size 21" × 7" (Optional) provides the pressure source. These
cylinders are shipped empty, but when lled they may be pressurized
to 2,216 psi / 153 Bar. They have a standard CGA-580, Compressed
Gas Association – left handed thread tting connection. CGA 590 right
handed thread ttings 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.
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