OfiTE 120-70 User manual
Stirred Fluid Loss Tester
120-70 (115 Volt)
120-70-1 (230 Volt)
Instruction Manual
Updated 2/18/2019
Ver. 8
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
Overview .........................................................................................2
Components ...................................................................................3
Specications ................................................................................4
Setup................................................................................................4
Operation.........................................................................................4
Preparing the Test Cell................................................................4
Installing the Test Cell .................................................................6
Performing the Test.....................................................................7
Maintenance.................................................................................. 11
Diagram .........................................................................................13
Warranty and Return Policy ........................................................15
Table of
Contents
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 2
Successfully cementing the casing string of an oil or gas well is highly
dependent upon the characteristics of the cement slurry. Properties that
should be considered include consistency, density, the ability to quickly
develop compressive strength, rheological properties, and ltration control.
Well cements that have poor ltration control can lead to a complete failure
of the cementing operation. In addition, the invasion of ltrates into producing
zones causes formation damage, which can greatly reduce the production
potential of the reservoir. Developing cement slurries that have minimal
ltration loss prevents expensive remedial cementing operations and reduces
formation damage. The OFITE Stirred Fluid Loss Tester provides a reliable
means of determining the uid loss characteristics of a well cement.
A cement slurry is poured into the test cell, which is then placed into the
heating jacket. The gear drive system is connected to the agitation paddle,
which is dimensionally equivalent to an atmospheric consistometer paddle.
The desired test temperature is maintained by a digital PID temperature
controller, while the necessary pressure is applied to the cell to prevent
evaporation of the liquid phase. When conditioning the cement in accordance
to API (American Petroleum Institute) Specication 10 guidelines, the paddle
is rotated at 150 rpm for 20 minutes. Once the cement is conditioned,
differential pressure is applied to the cell. The ltrate is collected in a back
pressure receiver for 30 minutes. The API denes uid loss as the volume
(ccs) of ltrate that is collected during this 30-minute interval.
Overview
Intro
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 3
Components Consumables:
#120-70-025 Flexiseal
#120-70-033 PTFE Sleeve Bearing, Qty: 3
#120-70-1-026 Paddle Assembly
#120-503 Paddle Pin
#165-44 High-Temperature Thread Lubricant, 1 oz
#170-18 Detachable Screen, 325 Mesh with 60 Mesh Backup
#171-11 O-ring for Backpressure Receiver
#171-190-057 Valve Stem O-ring, Viton 90D
#171-190-060 Test Cell O-ring, Viton 90D
Replaceable Parts:
#120-70-1-020 Backpressure Receiver
#120-70-1-021 Gauge, 1,000 psi
#120-70-1-022 Gauge, 4,000 psi
#120-70-1-049 Spanner Wrench
#120-70-1-062 Test Cell
#120-70-1-064 Cell Cap, Filter Side
#120-70-024 Cell Cap, Drive Side, With Paddle
#120-80-4 Temperature Controller
#120-80-6 Motor
#130-76-03 Thermocouple
#152-37 AC Power Cord, (115 Volt Only)
#152-38 AC Power Cord, (230 Volt Only)
#153-14 Graduated Cylinder, 50 mL × 1 mL, Glass
#153-16 Graduated Cylinder, 25 mL × 2/1 0 mL, Glass
#165-14-8 Type “J” Thermocouple, ⅛" × 6"
#170-16 Valve Stem, 3.25" (8.3 cm)
#170-35 6" Adjustable Wrench
#171-23-1 Safety Pin with Lanyard
115 Volt Fuses:
#121-017 Heater Fuse, 8 Amp
#130-10-503 Motor Fuse, 4 Amp
#172-09 Main Fuse, 10 Amp
230 Volt Fuses:
#121-017 Main Fuse, 8 Amp
#130-10-503 Heater Fuse, 4 Amp
#172-05 Motor Fuse, 2 Amp
Optional:
#120-71 One Year’s Spare Parts for Stirred Fluid Loss Tester
#120-70-025 Flexiseal, Qty: 4
#120-70-034 Washer, Rulon J, Qty: 8
#130-76-03 Thermocouple, Qty: 2
#153-16 Graduated Cylinder, 25 mL × 2/10 mL, Glass, Qty: 4
#170-16 Valve Stem, 3.25" (8.3 cm), Qty: 6
#170-18 Detachable Screen, 325 Mesh with 60 Mesh Backup, Qty: 12
#171-11 O-ring for Backpressure Receiver, 100 mL, Qty: 12
#171-23-1 Safety Pin with Lanyard, Qty: 2
#171-190-057 Valve Stem O-ring, Viton 90D, Qty: 50
#171-190-060 Test Cell O-ring, Viton 90D, Qty: 50
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 4
Specications - Maximum Pressure: 2,000 psi
- Maximum Temperature: 450°F (232.2°C)
-Temperature is maintained by a PID temperature controller
- Variable paddle rotation speed (5 to 200 rpm)
-Filtration portion of cell is dimensionally equivalent to an API approved
HTHP test cell
1. Connect the instrument to a power source. Be sure to use the correct
voltage for your equipment.
2. Connect the instrument to a nitrogen source using the connector on the
back panel. The nitrogen source should be regulated between 2,000 and
2,500 psi.
3. Connect a drain and water supply to the back of the unit. All connectors
are ¼" NPT.
1. Begin by turning the test cell so that the end labeled "In" is facing up.
2. Apply high-temperature grease (#165-44) to a cell cap o-ring (#171-190-
060) and insert it into the groove inside the test cell.
3. To facilitate cleaning, a thin coat of white lithium high-temperature grease
may be applied to all surfaces that will come in contact with cement. This
includes the inside of the test cell, the paddle, and the inside surfaces of
the two cell caps.
4. Lubricate the threads on the paddle assembly cell cap. Press the poppet
valve into the closed position and insert the paddle into the test cell. Hand
tighten completely.
5. Screw the valve stem (#170-16) into the paddle assembly cell cap and
tighten it completely.
6. Turn the cell over. If possible, place the cell in a vise to prevent damage
to the valve stem.
7. Mix your cement slurry as directed in API
Specication 10 and pour no more than 425
mL into the test cell. Remove any cement
from the o-ring groove.
8. Apply high-temperature grease to another
cell cap o-ring (#171-190-060) and place it
in the groove inside the end of the test cell.
Cement Screen
Setup
Operation
Preparing the Test Cell
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 5
Screen-Side Cell Cap Paddle-Side Cell Cap
9. Place the Cement Screen (#170-18) into the test cell on top of the o-ring
with the at side facing down.
10. Apply high-temperature grease to another cell cap o-ring (#171-190-
060). Then, place the o-ring into the end of the cell, on top of the cement
screen.
11. Lubricate the threads of the cell cap with an anti-thread galling compound
and screw the cap into the cell with the spanner wrench provided.
Tighten the cap completely.
12. Screw the valve stem (#170-16) into the center of the screen-side cell cap
and tighten completely.
Cell Cap
Paddle
Assembly
Cell Cap
Valve Stems
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 6
Operation
Installing the Test Cell
1. Rotate the heating jacket until it is horizontal. The fully-open end should
be facing away from the control panel.
2. Insert the test cell into the heating jacket, paddle assembly rst.
3. Return the heating jacket to the vertical position and insert the cell holder
to secure the test cell.
4. Connect the longest stainless steel hose from the Coolant Out port on the
cabinet to the corresponding port on the heating jacket. This will allow steam
to vent as water in the cooling coils evaporates when the cell heats up.
5. Connect the end of the paddle assembly to the motor below the heating
jacket.
6. Attach the manifold block (#170-20) to the upper valve stem and secure it
with the retaining pin (#171-23-1).
7. Connect the upper air line to the manifold block using the quick connect
attachment.
8. Loosen the upper valve stem one half turn.
Thermocouple
Quick Connector
Cell Holder
Test Cell in Heating Jacket
Manifold Block
Retainer Pin
and Lanyard
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 7
Operation
Performing the Test
In this sections, the numbers in () refer to components identied in the
“Control Panel” image at the bottom of this page.
1. Begin by turning the ‘Main’ switch (3) on.
2. Turn on the switch labeled ‘Motor’ (5) and accelerate the motor to 150
rpm using the potentiometer (2).
The motor requires some time to reach the specied speed. After
turning the potentiometer, wait a few seconds before turning it again
to allow the motor to fully accelerate.
3. Increase the high-end pressure (11) to 500 psi by rotating the left-hand
regulator clockwise.
4. Make sure the thermocouple is plugged into the thermocouple port on the
unit cabinet. Insert the thermocouple into the hole on the top of the test cell.
Control Panel
1. Motor Speed Indicator (rpm)
2. Potentiometer
3. Main Power Switch
4. Main Fuse
5. Motor Power Switch
6. Motor Fuse
7. Heat Power Switch
8. Heat Fuse
9. Temperature Controller
10. High-End Pressure Gauge (psi)
11. High-End Pressure Regulator
(#120-70-1-050)
12. Low-End Pressure Gauge (psi)
13. Low-End Pressure Regulator
(#120-70-1-051)
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 8
The thermocouple MUST be properly inserted into the hole in the test
cell and plugged into the port BEFORE the heat is activated.
Actual Temperature
Temperature Setpoint
Set Temperature
Temperature Controller
5. Set the temperature controller to the desired setting and turn the ‘Heat’
switch (7) on.
6. Once the test cell reaches the desired temperature, condition the cement
for another 20 minutes. Then turn off the ‘Motor’ switch (5).
If you notice a leak from the bottom end of the test cell, lower the
pressure and tighten the packing nut on the paddle.
7. Close the upper valve stem by tightening it all the way. Then, lower the
high-end pressure (11) down to 0 psi.
8. Remove the manifold block from the upper valve stem and disengage the
motor from the paddle assembly.
9. Pull the retaining pin knob and turn it a few degrees. Rotate the heat
jacket 180° so that the paddle assembly is now on top. Now rotate the
retaining knob back to its original position to lock the heat jacket into place.
10. Attach the manifold block to the valve stem on the paddle assembly and
secure it with the retaining pin.
11. Attach the back pressure receiver to the lower valve stem and secure it
with the retaining pin.
12. Connect the lower air line to the back pressure receiver using the quick
connect attachment.
13. Based on the temperature of your project, refer to the chart on the next
page to determine the water vapor pressure inside the test cell. Set the
high-end pressure (11) to this value plus 1,000 psi.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 9
Temperature °F / °C Water Vapor Pressure
kPa / psi
Coefcient of Volume
Expansion of Water
100 / 212 100 / 14.7 1.04
121 / 250 210 / 30 1.06
149 / 300 460 / 67 1.09
177 / 350 930 / 135 1.12
204 / 400 1,700 / 247 1.16
232 / 450 2,910 / 422 1.21
260 / 500 4,688 / 680 1.27
288 / 550 7,200 / 1,044 1.36
316 / 600 10,620 / 1,541 1.47
15. Loosen the upper valve stem one half turn.
16. Set the low-end pressure (13) to the appropriate pressure based on API
Specication 10 by rotating the right-hand regulator clockwise.
17. Loosen the lower valve stem one half turn. Begin timing for 30 minutes.
It is important to begin timing as soon as you open the lower valve
stem. The results of your test are determined by the amount of uid
collected during this 30-minute period.
Heating Jacket Orientation
Conditioning the Cement Performing the Test
Motor
Paddle Assembly Back Pressure
Receiver
Retaining Pin
Paddle Assembly
Retaining Knob
Retaining Pin
Manifold Block
This manual suits for next models
1
Table of contents
Other OfiTE Test Equipment manuals
