OfiTE 170-181 User manual

HTHP Filter Press with Threaded Cells
for Drilling Fluids Testing
#170-181: 115 Volt
#170-181-1: 230 Volt
Instruction Manual
Updated 6/13/2019
Ver. 4
OFI Testing Equipment, Inc.
11302 Steeplecrest Dr. · Houston, Texas · 77065 · U.S.A.
Tele: 832.320.7300 · Fax: [phone] · www.ote.com
©Copyright OFITE 2014

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 1
Intro..................................................................................................2
Specications .................................................................................3
Components ...................................................................................4
Safety...............................................................................................9
Quick Start ....................................................................................16
Operation.......................................................................................19
Data................................................................................................26
Cell Cap Assembly .......................................................................27
Maintenance..................................................................................28
Diagram .........................................................................................32
Test Cell ....................................................................................32
Warranty and Return Policy ........................................................33
Table of
Contents

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.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 condi-
tions 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) specications.
A complete HTHP Filter Press consists of a controlled pressure source, usu-
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 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 for-
mation 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: [phone] / Fax: [phone] / www.ote.com 3
Size: 7.5" × 11" × 23.5" (19.1 × 27.9 × 59.7 cm)
Weight: 27 lb. (12.3 kg)
Shipping Size: 20" × 13" × 13" (51 × 33 × 33 cm)
Shipping Weight: 33 lb (15 kg)
Maximum Temperature
(Heating Jacket): 350°F (177°C)
Maximum Temperature (Cell): 500°F (260°C)
Maximum Pressure (Cell): 5,000 psi
Maximum Pressure (Receiver): 750 psi (5.1 MPa)
Pressure Source: CO2 Bulbs
Test Cell Capacity: 175 mL
Receiver Volume: 15 mL
Heater: 400 Watt
Power Requirement: 115 VAC, 5 Amps, 50/60 Hz
230 VAC, 3 Amps, 50/60 Hz
Specications

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 4
Components Supplies:
#153-14 Graduated Cylinder, 50 mL × 1 mL
#154-10 Dual-Scale Thermometer with Dial, 5" Stem, 50° - 500°F (0° -
250°C)
#165-44-2 Anti Seize Compound, Silver, 7g Pouch
#170-19 Filter Paper, 2½" (6.35 cm), Specially Hardened for Filter
Presses, 100/Box
#170-35 Adjustable Wrench, 6"
Assemblies:
#170-04 CO2Pressurize Unit:
#143-02-10 CO2 Puncture Head Assembly
#143-02-12 Puncture Pin
#143-02-13 O-ring
#143-02-14 O-ring
#143-03 Barrel for CO2Cartridge
#170-08 Regulator
#170-20 Manifold Block
#170-32 Needle Valve, Male, ⅛" × ⅛"
#171-23-1 Safety Pin with Lanyard
#171-34 Gauge, 1,500 psi, 2" Face, ¼" NPT Bottom
#170-06 Back Pressure Receiver, 15-mL Stainless Steel Tube for CO2
#143-00 Regulator
#143-01 Gauge, 200 psi, ⅛" Bottom Connection
#143-02-10 CO2 Puncture Head Assembly
#143-02-12 Puncture Pin
#143-02-13 O-ring
#143-02-14 O-ring
#143-03 Barrel for CO2Cartridge
#143-06 Safety Bleeder Valve
#143-11 Elbow
#170-07 O-ring
#170-28 Receiver Body
#170-32 Needle Valve, Male, ⅛" × ⅛"
#171-23-1 Safety Pin with Lanyard

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 5
#170-181-S Test Cell, Stainless Steel (For Mud Testing)
#120-910-028 O-ring for Rupture Disk, Viton 75D, Qty: 1
#130-81-040 Retaining Ring, Qty: 2
#165-44-2 Anti Seize Compound, Silver, 7g Pouch, Qty: 4
#170-13-3 O-ring for Cell, Viton 75D, Qty: 4
#170-16 Valve Stem, Qty: 2
#170-17 O-ring for Valve Stem, Viton 75D, Qty: 4
#170-18 Cement Screen, Qty: 2
#170-180-020-S Cell Body, 175 mL, Qty: 1
#171-190-023 Locking Ring, Qty: 2
#171-190-027 Rupture Disk, Qty: 1
#171-190-029 Cap Wrench, Qty: 1
#171-190-032-S Cell Cap, Outlet, Cement, Qty: 1
#171-190-033-S Cell Cap, Inlet, Cement, Qty: 1
#171-190-057 O-ring for Valve Stem, Viton 90D, Qty: 4
#171-190-058 O-ring for Rupture Disk, Viton 90D, Qty: 1
#171-190-060 O-ring for Cell, Viton 90D, Qty: 4
#170-00-1 Heating Jacket, 115 Volt:
#170-01-1 Heating Jacket, 230 Volt:
#164-32 Male Connector for Power Cable (230 Volt)
#170-05 Thermostat for HTHP Filter Press 50-500
#170-10 Thermostat Pilot Light
#170-11 Heating Element, 200W, Qty: 2
#170-15 Base
#170-21 Stand
#170-30 Stainless Steel Thermostat Cover
#170-44 Rubber Foot ½", Qty: 4
#171-32 Midget Knob
#171-82 Power Cord with Male Plug, 8' (115 Volt)
Optional:
#143-05 CO2 Bulbs, 8-Gram, Package of 10, UN 1013
#152-00 Hamilton Beach Mixer, With Container
#152-01 Armature For Model 936 H.B. Mixer, 115 Volt
#155-20 Timer; 60 Min. Interval
#170-03 Carrying Case, Stainless Steel
#170-13 O-ring for Test Cell, NBR/Nitrile (Buna N), For temperatures up
to 250°F (121°C)
#170-13-4 O-ring for Test Cell, Peruorocarbon (FFKM), For temperatures
up to 500°F (260°C)
#170-13-5 O-ring for Test Cell, Ethylene propylene (EPM/EPDM), For tem-
peratures up to 400°F (204.4°C), Water-based uids only
#170-33 HTHP Cell Cap Puller
#170-40 Test Cell Removal and Carrying Tool
#170-91 HTHP Pressure Relief Tool
#170-92 Safety Clamp for HTHP Fluid Loss Cells

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 6
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.
Part Number Description Qty.
#140-60-01 O-ring for Bleeder Valve 2
#143-00-1 Diaphragm for Airco Regulator 1
#143-01 Gauge, 200 psi, ⅛" Bottom Connection 1
#143-02-13 O-ring for Puncture Pin Holder 2
#143-02-14 O-ring for Puncture Pin Holder, Rear 2
#143-05 CO2 Bulbs, 8 Gram, Package of 10, UN 1013 60
#143-07 Repair Kit for Regulator (#143-00) 1
#153-14 Graduated Cylinder, 50 mL × 1 mL 2
#154-10 Dial Thermometer, 5" Stem, 50° - 500°F and 0 - 250°C 1
#170-13-3 O-ring for Cell, Viton 75D 50
#170-16 Valve Stem 4
#170-17 Valve Stem O-ring 100
#170-19 Filter Paper, 2½" (6.35 cm), Hardened for Filter Press 5
#171-190-057 O-ring for Valve Stem, Viton 90D 100
#171-190-060 O-ring for Test Cell, Viton®50
#171-23-1 Safety Pin with Lanyard 1
#170-181-SP Spare Parts Kit:

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.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 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.
Interval Timer, 60 minute
(#155-20)
Cell Cap Removal Tool
(#170-33)
(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: [phone] / Fax: [phone] / www.ote.com 8
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: [phone] / Fax: [phone] / www.ote.com 9
Safety Pressure and Temperature Considerations
Do not use or recongure this equipment in a manner not specied 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.
HTHP Filter Presses are pressurized either with Carbon Dioxide or with
Nitrogen gas. The OFITE 175 mL HTHP Filter Press, 170-00 Series, is small
enough to be portable, so it is usually pressurized with small (65 mm length)
Carbon Dioxide (CO2) bulbs, which contain 10 cm3 of CO2gas and weigh 8
grams. These bulbs are pressurized to approximately 1,000 psi and they con-
tain plenty of carrier gas to run a complete 30 minute ltration test, if running
the standard API 500 psi differential test, which is usually 600 psi on the top
manifold and 100 psi on the bottom or back pressure.
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 operat-
ing 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 instan-
taneously. 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.
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 causing a pressurization failure of the cell, which is often sud-
den and catastrophic. For example, if the valve stem o-ring suddenly fails,
then steam at 400°F and under great pressure may shoot outward horizon-
tally 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 re-
placed after each and every test.