OfiTE MB HTHP User manual

Model MB HTHP Filter Press
171-50 (115V)
171-51 (230V)
For temperatures up to 350°F (177°C)
Instruction Manual
Updated 5/6/2011
Ver. 2.1
OFI Testing Equipment, Inc.
11302 Steeplecrest Dr. · Houston, Texas · 77065 · U.S.A.
Tele: 832.320.7300 · Fax: [phone] · www.ofite.com
©Copyright OFITE 2011

Table of
Contents
Intro.......................................................................................................2
Specifications ......................................................................................2
Components.........................................................................................3
Safety ....................................................................................................6
Procedure .............................................................................................7
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ofite.com 1

The OFITE Model MB HTHP Filter Press is designed to test drilling fluids
and cement under elevated temperatures and pressures. This simulates
various downhole conditions and provides a reliable method for determin-
ing the effectiveness of the material being tested. The complete assembly
consists of a controlled pressure source, regulators, a high pressure cell, a
system for heating the cell, a pressurized collection cell able to maintain
proper back pressure in order to prevent flashing or evaporation of the fil-
trate, and a suitable stand.
Size: 19" x 21" x 28" (49 x 54 x 72 cm)
Weight: 40 lbs. (18.2 kg)
Shipping Size: 23" x 13" x 13" (59 x 33 x 33 cm)
Shipping Weight: 50 lbs. (22.8 kg)
Maximum Temperature: 350°F (176°C)
Maximum Pressure: 1,500 PSI (10,342.5 kPa)
Pressure Source: 2 CO2Cartridges
Test Cell Capacity: 250 mL
Voltage: #171-50: 115V; #171-51-C: 230V
Heater: 200 Watt
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ofite.com 2
Specifications
Intro

Components #153-16 Glass Graduated Cylinder; 25 mL x 2/10 mL
#153-55 Silicone Stopcock Grease; 150 g Tube
#154-10 Dual-Scale Thermometer with Metal Dial; 5" Stem; 50 - 500°F; 0
- 250°C
#170-19 2½" (6.35 cm) Filter Paper; Specially Hardened for Filter
Presses
#171-56 Complete HTHP Cell
#170-34 ¼" x ¼" NPT Male Needle Valve; Qty: 2
#171-72 T-handle for Needle Valve; Qty: 2
#171-64 Male Coupling; Qty: 2
#171-60 HTHP Cell
#171-78 Locking Screw; Qty: 3
#171-52 O-ring; 2 5/16" x 2½" x 3/32"
#171-62 Cell Lid
#171-57 HTHP Regulator Assembly
#142-58 O-ring for HTHP Coupling
#143-02-10 CO2Puncture Head Assembly
#143-03 Barrel for CO2Cartridge
#144-15 Plated Brass Bushing; ¼" NPT Male to 1/8" NPT Female;
Qty: 2
#170-34 ¼" x ¼" NPT Male Needle Valve
#171-53 High-Pressure Regulator
#171-73-1 1000-PSI Gauge; 1/8" Bottom; 1½" Face
#171-74-1 2000-PSI Gauge; 1/8" Bottom; 1½" Face
#171-76 Female Coupling for Top Valve
#171-77 Coupling Ring for Top Valve
#171-58 HTHP Complete Back Pressure Receiver
#142-37 Victor Regulator
#142-58 O-Ring for HTHP Coupling
#142-61 200-PSI Gauge; 2"; ¼" Bottom Connection
#143-02-10 CO2Puncture Head Assembly
#143-03 Barrel for CO2Cartridge
#143-06 Safety Bleeder Valve
#143-09 200-PSI Relief Valve
#170-07 O-ring; Qty: 2
#170-32 1/8" x 1/8" NPT Male Needle Valve
#171-66 Stainless Steel Receiver Tube
#171-75 Receiver Body
#171-79 ¼" Hex Wrench
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ofite.com 3

#171-50 HTHP Filter Press Without Case (115V):
#171-55 HTHP Heating Jacket and Stand; 115V
#142-58 O-ring for HTHP Coupling
#170-07 O-Ring
#170-11 Heating Element; 115V; 200W; Qty: 4
#171-54 Fuse
#171-59 Stand; Base and Leg
#171-59-1 Micarta Insulator Strip
#171-61 Heating Block Jacket
#171-63 Dial Plate for Thermostat
#171-65 Fuse Block
#171-67 Thermostat Knob
#171-68 Red Pilot Light
#171-69 White Pilot Light
#171-70-1 Waterproof Thermostat Cover
#171-71 Thermostat
#171-71-1 Thermostat Space Plate
#171-71-2 Sleeve and Nut for Thermostat
#171-82 Power Cord with Male Plug Only; 8'; 16/3 SJ; Round
#171-51 HTHP Filter Press Without Case (230V):
#171-55-1 HTHP Heating Jacket and Stand; 230V
#142-58 O-ring for HTHP Coupling
#164-32 Male Connector for Power Cable; 230V
#165-40-2 18 Gauge Cable; 3-Conductor; SJ00W; Qty: 8
#170-07 O-Ring
#170-11 Heating Element; 115V; 200W; Qty: 4
#171-54 Fuse
#171-59 Stand; Base and Leg
#171-59-1 Micarta Insulator Strip
#171-61 Heating Block Jacket
#171-63 Dial Plate for Thermostat
#171-65 Fuse Block
#171-67 Thermostat Knob
#171-68 Red Pilot Light
#171-69 White Pilot Light
#171-70-1 Waterproof Thermostat Cover
#171-71 Thermostat
#171-71-1 Thermostat Space Plate
#171-71-2 Sleeve and Nut for Thermostat
Optional:
#143-05 EZ Puncture CO2Bulbs; 8-Gram; UN #1013; Package of 10
#143-20 Repair Kit for High-Pressure Victor Regulator (#171-53)
#171-81 Stainless Steel Carrying Case
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ofite.com 4

#171-50-SP Spare Parts for #171-50 and #171-51:
#140-60-01 Bleeder Valve O-ring; Qty: 4
#142-42 Diaphragm; Qty: 2
#142-58 HTHP Coupling O-ring; Qty: 36
#142-61 200-PSI Gauge; 2"; ¼" Bottom Connection
#143-02-13 Puncture Pin Holder Assembly O-ring; CO2Cartridge; Qty: 2
#143-02-14 Puncture Pin Holder Assembly O-ring; Qty: 2
#143-05 EZ Puncture CO2Bulbs; (8-GRAM); (UN #1013); Box of
10; Qty: 60
#143-19 Repair Kit for Victor Regulator; Qty: 2
#143-20 Repair Kit for High-Pressure Victor Regulator; Qty: 2
#153-16 Glass Graduated Cylinder; 25 mL x 2/10 mL; Qty: 2
#153-55 Silicone Stopcock Grease; 150 g Tube; Qty: 2
#154-10 Dual-Scale Thermometer with Metal Dial; 5" Stem; 50 -
500°F; 0 - 250°C
#170-07 O-ring; Qty: 2
#170-11 200-Watt Heating Element; 115V; Qty: 4
#170-19 2½" (6.35 cm) Filter Paper; Specially Hardened for Filter
Presses; Qty: 10
#171-52 O-ring; 2 5/16" x 2½" x 3/32"; Qty: 12
#171-54 Fuse
#171-67 Thermostat Knob
#171-68 Red Pilot Light
#171-69 White Pilot Light
#171-71 Thermostat
#171-73-1 1000-PSI Gauge; 1/8" Bottom; 1½" Face
#171-78 Cell Screw; Qty: 4
#171-79 ¼" Hex Wrench
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ofite.com 5

Safety Carbon Dioxide gas is normally supplied in small bulbs or cartridges, which
contain approximately 900 PSI (6,206 kPa) pressure when new. Because
they are highly portable, they are usually used in field operations. These
bulbs should not be exposed to high heat (50°C/120°F) as they can
explode if over heated.
Carbon Dioxide cartridges are pressurized to approximately 900 PSI at 1
atmosphere (sea level). Therefore, they should never be transported by
airplane without proper packing because cabin de-pressurization may
cause an explosion.
Do not use nitrous oxide cartridges as pressure sources for high-tem-
perature, high-pressure (HTHP) filtration. Under high temperature
and pressure, nitrous oxide can detonate in the presence of grease,
oil, or carbonaceous materials. Nitrous oxide cartridges are to be
used only for Garrett Gas Train Carbonate Analysis.
Due to the high temperatures and pressures involved in this test, extreme
care must be exercised at all times. All safety precautions must be met,
especially in the cell breakdown procedure after the filtration procedure has
been completed.
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
Important
!

Procedure 1. Connect the heating well power cord to the appropriate power source.
Place a dial-type metal thermometer in the well in the heating jacket
and preheat to 10°F (6°C) above the desired test temperature. A pilot
light will come on when the heating jacket is at the desired temperature
as selected by the thermostat control knob.
2. Stir the sample for 10 minutes with a high speed mixer. Close both
needle valves on the test cell by turning them counter-clockwise. Invert
the cell and carefully pour the test fluid into the cell body. Leave at
least 0.5" (13 mm) of empty space below the o-ring groove to allow for
heat expansion of the fluid. Do not spill fluid on the o-ring inside the
cell.
3. Place a circle of filter paper in the groove and place an o-ring on top of
the paper. Place the cell cap into the cell, and twist it into position so
the cap locking screws will fasten to the wings of the cell cap. Evenly
tighten the set screws with the allen wrench.
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Needle Valve (Inlet)
(#170-34)
Test Cell
(#171-56)
Needle Valve (Outlet)
(#170-34)
O-ring Groove Cell Cap (#171-62) Locking Screws (#171-78)

4. Place the cell in the heating jacket with the outlet or filter side of the cell
cap properly oriented down. Make sure both valves on the cell are
closed. Transfer the thermometer into the thermometer well within the
cell.
5. Check the o-ring on the inside of the female coupling on the top pres-
sure assembly for nicks and cuts. Apply a thin coat of silicone grease
to the o-ring but do not seal up the hole with grease. Connect the pres-
suring assembly to the top male slip coupling by lifting the lock ring and
sliding the pressure assembly onto the male coupling. Release the lock
ring and the top pressure assembly has been installed.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ofite.com 8
Locking Ring
Male Coupling
(#171-64)
Back Pressure Receiver
Needle Valve
(#170-32)
Needle Valve
(#170-34)
Pressuring Assembly (#171-57) Back Pressure Receiver (#171-58)
Cartridge Holder
(#143-03)
T-screw
T-screw
O-ring
(#142-58)

6. If you will be operating above 200°F (93.3°C), place the back pressure
receiver on the bottom valve assembly in the same manner.
7. Remove the CO2cartridge holder from both the top pressuring assem-
bly and the back pressure receiver. Make sure both regulator T-screws
are unscrewed completely and the needle valves are completely
closed. Place a CO2cartridge in each holder and screw the holder onto
the pressuring assemblies until the cartridges puncture. If the red relief
valve on the backpressure receiver is not already pulled out, pull it out
now.
8. Keeping the test cell valves closed, adjust the top and bottom regula-
tors to the recommended back pressure for your test. Open the top
valve one full turn to pressurize the sample. This pressure will mini-
mize boiling while the sample is heating. Maintain this pressure on the
fluid until the desired temperature is stabilized, as indicated by the ther-
mometer. The heating time of the sample should never exceed one
hour.
The upper and lower limits of the test pressure differential are deter-
mined by the test temperature. As this temperature exceeds 212°F
(100°C), the back pressure must be increased in order to prevent
vaporization of the filtrate. The 500 PSI differential pressure must be
maintained, so the top pressure will have to be increased accordingly.
The table below shows the pressures recommended for various test
temperatures.
9. When the fluid sample reaches the desired test temperature, increase
the pressure on the top pressure unit to 500 PSI (3,447.5 kPa) above
the back pressure. Open the bottom valve to initiate filtration and begin
timing.
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
Note
Recommended Minimum Back Pressure
Test Temperature Vapor Pressure Minimum Back Pressure
°F °C PSI kPa PSI kPa
212 100 14.7 101 100 690
250 121 30 207 100 690
300 149 67 462 100 690
350 177 135 932 160 1,104
400* 204 247 1,704 275 1,898
450* 232 422 2,912 450 3,105
500* 260 680 4,692 700 4,830
*For tests above 400°F, use Teflon o-rings.