BJ SERVICES COMPANY, USA

SERVICE TOOLS TECHNICAL MANUAL

Subject: TST-2 16” Service Packer
Index No.: 2021 Revision: - Date: April 2004 Page 1 of 15
Approval: Doug Lehr Approval Date: April, 2004

TST-2 16” SERVICE PACKER

DESCRIPTION
The BJ 16” TST-2 Retrievable Service Packer is designed for use in sweet service wells at moderate temperature. It
is used for service operations such as squeeze cementing, formation fracturing, and tubular testing. The TST-2
packer features an integral bypass, which allows rapid running without external unloader valves. A system of
hydraulic hold-down buttons allows the TST-2 packer to automatically grip the casing when tubing pressure exceeds
annular pressure, preventing packer movement while treating below the packer. These buttons retract when the
tubing and casing pressures equalize, allowing easy retrieval. The TST-2 is a compression-set packer designed to
operate at differential pressures up to 4000 PSI above or below the packer. Operations are normally limited to 200°
F. with the standard elements and seals.

FEATURES AND BENEFITS

Integral Unloader and Fluid Bypass. The TST-2 packer is well suited to operations such as spotting fluids while
the packer is still set. The bypass design also allows circulation around the bottom of the packer, allowing rapid
removal of debris, cement or treating fluids from the bottom of the packer.
Reliable Setting. The slips on the TST-2 packer ride in a dovetail slot. This gives the slips an even bite, spreading
the load evenly over the casing. This positive slip deployment also helps to center the packer within the casing. The
slips also use tungsten carbide inserts to allow reliable gripping of all types and grades of casing and allow
penetration of scale and other build-up on casing walls.
Reliable Release. Picking up the tubing string opens the unloader. This equalizes the pressure across the hydraulic
hold-downs to allow retrieval.
Proven Packing Element System. The packing element system used on the TST-2 packer is a robust, field proven
system used throughout the industry. The element system consists of three packing elements of varying hardnesses.
The center element is softest, usually 70 durometer, and provides a quick effective seal. The outer elements are 90
durometer, and provide additional sealing and prevent extrusion of the center element.
Full Bore Design. Wireline tools and perforating equipment may be run through the packer while performing
service operations.
Keyed Mandrel Connections. The mandrel connections to both top and bottom subs are keyed to prevent back-off
down hole.

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SERVICE TOOLS TECHNICAL MANUAL
Subject: TST-2 16” Service Packer
Index No.: 2021 Revision: - Date: April 2004 Page 2 of 15

SPECIFICATION GUIDE
Casing Casing ID Gauge Packing Spacer Ring OD Mandrel Standard
Weight Preferred Ring OD Element OD ID Connections
65-84 15.010-15.250 14.698 14.000 13.636 3.25 4-1/2 IF
84-109 14.688-15.010 14.375 14.000 13.313 3.25 4-1/2 IF

Slip Range Button Range Drag Block Range

Min Max min max Min Max
14.500 15.563 14.500 15.563 14.375 15.563
14.500 15.563 14.500 15.563 14.375 15.250

PRESSURE, TEMPERATURE, AND MECHANICAL RATINGS

Packer Mechanical Limits, All Weight Ranges
All values listed are with a safety factor of 1.0. If these values are exceeded, the packer must be disassembled and
thoroughly inspected for damage prior to returning the packer to service. If tension loads are exceeded on the
mandrel, the mandrel, top and bottom subs must be replaced regardless of whether any damage is apparent.
Mandrel – Maximum tensile load 500,000 lbs

Tool pressure rating 4,000 PSI differential

The standard 16” TST-2 Packer is shipped with a Nitrile unloader seal, and a 90-70-90 Durometer Nitrile packing
element system. This allows the packer to operate at temperatures up to 200° F. and at differential pressures up to
4000 PSI.
Casing J-Slot Type
Part Number Element System
Weight
65-84 ppf
79355-1 (15.010- RH-Manual 90-70-90
15.250 ID)
109 ppf
84453-1 RH-Manual 90-70-90
(14.688 ID)

Assembly/Redress Items
Part Number Description
84037-1 Packer Body collet assembly tool
109636 5/16-8 x .75” long socket cap screws (qty-8) for Packer Body Collet Assembly tool.
866941 Packing Element, End – 90 Duro
866942 Packing Element, Center – 70 Duro
T46004249 O-Ring, 249 Ntrl, 90 Duro HM (for Top Sub)
XAS-439-03 O-Ring, 439 Ntrl, 90 Duro HM (For Balance Sleeve)
46004243 O-Ring, 243 Ntrl , 90 Duro HM (For Mandrel)
XAS-254-03 O-Ring, 254 Ntrl, 90 Duro HM (for Seal Compressor)
XAS-432-02 O-ring, 432 Ntrl, 90 Duro HM (For Receptacle)

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SERVICE TOOLS TECHNICAL MANUAL
Subject: TST-2 16” Service Packer
Index No.: 2021 Revision: - Date: April 2004 Page 3 of 15

XAS-270-03 O-ring 270 Ntrl 90 Duro HM (For Packer Body Face)

XAS-338-02 O-Ring, 338 Ntrl 90 Duro HM (For Buttons)
84095-1 Unloader Seal

OPERATING INSTRUCTIONS
Prior to Running
Make sure that the well is as clean as possible. Consult slack-off charts for specific combinations of tubing and
casing to make sure that enough set-down weight can be applied to the packer. Check hydraulic effects prior to the
pressurizing the casing or starting the job. Make sure that there is enough set-down weight at the packer to hold the
bypass closed, and that the casing will withstand the treating pressures and packer induced forces. Make a fishing
diagram and note packer configuration, i.e. 16” TST-2 with RH L. Verify that the packer ID is clear of obstructions
(run water from rig hose through the packer in sight of rig personnel, drift packer if necessary). Function test
packer. Work drag block housing to set position, push drag block housing toward packing elements and verify free
movement of all slips. Return the drag block housing to the running position. Make up TST-2 Service Packer and
any accessories to tubing or drill pipe. Verify that packer is in the running position. Verify BOP is open. Run
packer to desired depth.
Note: At the depths that packers are typically run at, i.e. 1,500 feet and less, several hundred feet
of drill collars must be run immediately above the packer to achieve the set-down weights
required for pack-off.

To Set
Note: Assume a RH manual packer will be used. All pipe movement stated will be what is
required at the packer. Rotate ¾ turn to the right.
Slack-off pipe weight to get at least the minimum set-down weight on the packer. (See set-down weight chart on
page 4) Close the rams on the surface and pressurize the annulus to test the packer for leaks. If pressure in the
annulus cannot be maintained, the packer should be pulled and inspected.
Note: If the packer shows evidence of leaking when pressured from below due to insufficient set-
down weight, pressure the annulus to 200 psi for 2 minutes to help the buttons retract before
adding weight.

To Spot Fluids
After the packer has been tested, release any annular pressure first and the then tubing pressure. Pick the packer up
2” to open the bypass. Begin spotting fluid. When the fluids are properly positioned, slack off to close the bypass.
Apply weight to the packer. Monitor annulus and tubing pressures throughout the job.

To Release
Releasing the packer and pulling from the hole too quickly (before the buttons can completely retract) can damage
the buttons. Therefore, before retrieving, bleed down tubing pressure first so that annular pressure will help the
buttons retract. If this is not possible, bleed tubing pressure, then pressure the annulus to 200 psi and hold for 2
minutes, again to help the buttons retract. If pressuring the annulus is not possible, it may be necessary to work the
packer up and down slowly to help the buttons retract.

Reversing Out
After squeezing or after setting sand plugs, when possible, reverse out. This helps to flush debris from the packer
and works to insure that the packer will pull freely after job completion.

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SERVICE TOOLS TECHNICAL MANUAL
Subject: TST-2 16” Service Packer
Index No.: 2021 Revision: - Date: April 2004 Page 4 of 15

To Reset
The TST-2 can be set and released multiple times in the same trip to test casing or spot fluids at different locations.
The packer may be pulled up the hole and reset simply by slacking off weight. If it is to be run deeper into the well,
the packer will have to be picked up a few feet and rotated ¾ turn left, at the packer, back to the running position.

Minimum Set-Down Weights Required for Packoff (lbs)

Packing Element System Temperature Range, ° F. Weight at Packer
90-70-90 50 – 200 48,000

TROUBLESHOOTING
Symptom Possible Cause(s) Possible Solution(s)
Packer will not start in hole 1) Drag blocks or gauge rings too large for casing 1a) Check gauge ring OD
1b) Check drag blocks
1c) Verify packer appropriateness for casing

2) Add drill collars or pipe weight as

2) Insufficient pipe weight
necessary

Packer hangs up going in hole 1) Packer trying to set 1) Pick packer up a couple of feet and rotate
back to running position

2) Trash in hole 2) POOH make bit / scraper run and circulate

2 casing volumes to clean pipe
Packer will not set 1) Drag blocks not gripping 1a) Move up or down 1 joint to see if packer
will set
1b) Replace drag blocks and springs as
necessary
2) Slips not gripping 2a) POOH replace slips as necessary
2b) POOH inspect packer for debris.
Packer sets, but will not test 1) Packing elements too stiff for temperature at 1) POOH and redress with correct packing
depth elements
2) Packing elements damaged 2) POOH and redress with correct packing
elements

3) Insufficient set-down weight 3) Apply more set-down weight and re-test

4) Damaged bypass seal 4) POOH and replace bypass seal
Packer leaks during job 1) Overpressure 1) Adjust treating and casing pressures

2) Tubing contraction 2) Apply more set-down weight

Packer will not retrieve 1) Buttons will not retract 1a) Slack off weight and pressure back-side
to push buttons back into receptacle
2) Tailpipe stuck in cement 2a) Circulate through packer while pulling
tension
2b) Shoot off tailpipe and retrieve packer
Packer stops abruptly while running 1) Packer trying to set 1) Pick packer up a couple of feet and rotate
back to running position – resume RIH
2) Packing elements trying to swab-off 2a) Run in at slower speed
2b) Use external unloader valve

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SERVICE TOOLS TECHNICAL MANUAL
Subject: TST-2 16” Service Packer
Index No.: 2021 Revision: - Date: April 2004 Page 5 of 15

ASSEMBLY LUBRICANTS
The lubricants listed below will provide adequate protection and lubrication for the 16” TST-2 packer in land and
marine environments.

Grease Manufacturer
Liquid O-ring Polymer 400 Oil Center Research
KOPR-KOTE Jet-Lube

CALCULATING HYDRAULIC FORCES ON THE PACKER

Note: Pressures are in pounds per square inch (lbs/in2 or psi). Forces are in pounds (lbs.).
Areas are in square inches (in2). Linear dimensions are all in inches (in).

Tubing Pressure
Mandrel. Tubing pressure (pressure below the
packer) will provide an upward force equal to
the tubing pressure times the difference
between the bypass seal ID area and the tubing
ID area.
Balance Piston. Tubing pressure (pressure
below the packer) will provide a downward
force equal to the tubing pressure minus the
annular pressure times the effected area of the
piston. [Net Balance Piston Area X (Tubing
pressure – Annular pressure)]

Annular Pressure
Bypass Seal. Annular pressure acts on the
differential area between the bypass seal sub
and the OD area of the tubing. The force is
equal to the annular pressure times the
differential area. The force is downward if the
OD of the bypass seal sub is greater than the
tubing OD. The force is upward if the OD of
the bypass seal sub is less than the tubing OD.

Net Force
Net Force is calculated by adding all of the downward forces (including the weight set on the packer) and
subtracting all of the upward forces. The resulting net force must at least the minimum amount required to set the
packer. See minimum set-down weight chart on Page 4.
Note: Perform all calculations considering the worst possible conditions (i.e. maximum treating
pressures). Refer to hydraulic data included in this document.

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SERVICE TOOLS TECHNICAL MANUAL
Subject: TST-2 16” Service Packer
Index No.: 2021 Revision: - Date: April 2004 Page 6 of 15

TST-2 Packer and Hydraulic Data

Net Balance
Basic Packer Size Tubing Data Bypass Seal
Piston Area
Drill
Pipe Weight ID OD Area ID Area ID Area OD Area
Size Lbs./ft. In. (in2) (in2) (in.) (in2) (in2)
To Ti Si So Bn
6 5/8 25.2 5.965 34.471 27.945
5½ 24.70 4.670 23.758 17.128
16” – TST2 5½ 21.90 4.778 23.758 17.930
5 25.60 4.000 19.635 12.560
5 19.50 4.276 19.635 14.360
17.795 20.54 15.84
5 16.25 4.408 19.635 15.261
4½ 22.82 3.500 15.900 9.621
4½ 20.00 3.640 15.900 10.406
4½ 16.60 3.826 15.900 11.497
4½ 13.75 3.958 15.900 12.304

For tubing dimensions, consult the “BJ Engineering Handbook”

Areas (in sq. ins.) Acted On By Tubing and Annulus Pressures
Tubing Pressure
Greater Than Annulus Pressure Annulus Pressure
Tubing Annulus Tubing Greater Than Tubing Greater Than Tubing
Nominal Weight Pressure At The Pressure At The Tool Pressure At The Tool
Size I.D.
Tool Size (lb/f) Tool
O.D. Area
Tubing Annulus Tubing Annulus
Area Area Area Annulus Area Tubing Area Area
Col. 1 Col. 2 Col. 3 Col. 4 Col. 5 Col. 6 Col. 7

16” -TST2 6 5/8 -29.771 -16.68 -16.68

25.20 23.245 -27.945 10.15 -10.15

24.70 12.428 -17.128 -.667 .667

5-1/2 -19.058 -5.96 -5.96
21.90 13.230 -17.930 .135 -.135
25.60 7.860 -12.56 -5.235 5.235
5
19.50 9.660 -14.935 -14.36 -3.435 -1.84 3.435 -1.84
16.25 10.561 -15.261 -2.534 2.534
4-1/2 22.82 4.921 -11.200 -9.621 -8.174 1.895 8.174 1.895
20.00 5.706 -10.406 -7.389 7.389
16.60 6.791 -11.497 -6.298 6.298
13.75 7.604 -12.304 -5.491 5.491

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SERVICE TOOLS TECHNICAL MANUAL
Subject: TST-2 16” Service Packer
Index No.: 2021 Revision: - Date: April 2004 Page 7 of 15

Where,
Column 1 = -(So-Ti) + (Bn)
Column 2 = (So-To) – (Bn) To = Tubing O.D. Area
Column 3 = -Ti Ti = Tubing I.D. Area
Column 4 = -(Si-Ti) So = Bypass Seal O.D. Area
Column 5 = Si-To Si = Bypass Seal I.D. Area
Column 6 = Si-Ti Bn = Net Balance Piston Area
Column 7 = Si-To

When Tubing Pressure is Greater Than Annulus Pressure at the Tool:

Caution: Tubing movement calculation may be necessary to fully understand the forces on the packer and
should be run prior to the job.
1. Multiply the change in the tubing pressure at the tool by Column 1.
L1 = ∆P x Tubing Area Col. 1

2. Multiply the change in annulus pressure at the tool by Column 2.

L2 = ∆P1 x Annulus Area Col. 2
If the total of these forces is tending to open the unloader (negative), and is greater than the original
pack-off weight, additional set-down weight is required. This additional weight is equal to the
difference between the force tending to open the unloader and required pack-off weight.
3. Multiply the tubing pressure by Column 3.
L3 = ∆P x Tubing ID Area Col. 3
Since the figure in Column 3 is always negative, the resulting force is tending to open the unloader
by lifting the tubing at the surface. If by adding all three forces, the result is a force tending to open
the unloader and is greater than the maximum hook-load of the tubing before setting the tool, the
tubing will raise and the unloader will be opened. Since the hook-load is the limiting factor, high
pressures at relatively shallow depths might be prohibitive.
If L1 + L2 + L3<0 lb., tends to open the unloader valve. Add this to required set-down weight.
If L1 + L2 + L3>0 lb., tends to keep the unloader valve closed.
4. If the tubing is secured at the surface by a X-mas tree or such, the lifting force calculated in step 3 can be
disregarded.

Example Problem 1
Well Properties
16” 84 ppf casing
5” – 19.50ppf drill pipe
9.0 lb/gal brine water – casing is full
∆P = tubing pressure = 3000 psi at tool
∆P1 = annulus pressure = 0 psi at tool
Set-down weight = 50,000 lb.

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SERVICE TOOLS TECHNICAL MANUAL
Subject: TST-2 16” Service Packer
Index No.: 2021 Revision: - Date: April 2004 Page 8 of 15

1. Multiply the change in the tubing pressure at the tool by Column 1.

L1 = ∆P x Tubing Area Col. 1 = 3000 psi x 9.660 sq. in. = 28,980 lb.
2. Multiply the change in annulus pressure at the tool by Column 2.
L2 = ∆P1 x Annulus Area Col. 2 = 0 psi x (-14.935) sq. in. = 0 lb.
L1 + L2 = 28,980 + 0 = 28,980 lb.>0 lb. (tends to keep unloader valve closed)
3. Multiply the tubing pressure by Column 3. (Tubing not secured at surface)
L3 = ∆P x Tubing ID Area Col. 3 = 3000 psi x (-14.36) = -43,080 lb.
4. Adding the forces,
L1 + L2 + L3 = (28,980 + 0 + -43,080) lb. = -14,100 lb., will tend to open the unloader seal.

Therefore, an additional 14,100 lbs is needed for a total of 64,100 to set the tool, and keep the unloader seal
closed.

When Annulus Pressure is Greater than Tubing Pressure at the Tool:

1. Multiply the change in tubing pressure by Column 4.
L1 = ∆P x Tubing Area Col. 4
2. Multiply the change in annulus pressure by Column 5.
L2 = ∆P1 x Annulus Area Col. 5
If the total of these two forces is tending to open the unloader, and is greater than the original pack-off weight,
additional set-down weight is required. This additional weight is equal to the difference between the force
tending to open the unloader and the required pack-off weight.
3. Multiply the tubing pressure by Column 3.
L3 = ∆P x Tubing ID Area Col. 3
Since the figure in Column is always negative, the resulting force is tending to open the unloader by lifting the
tubing at the surface. If by adding all three forces, the result is a force tending to open the unloader and is greater
than the maximum hook-load of the tubing before setting the tool, the tubing will raise and the unloader will be
opened. Since the hook-load is the limiting factor, high pressures at relatively shallow depths might be
prohibitive.

Example Problem 2
Same example as above, except now ∆P= 0 psi. and ∆P1 = 3000 psi.
1. Multiply the change in tubing pressure by Column 4.
L1 = ∆P x Tubing Area Col. 4 = 0 psi. x (-3.435 sq. in.) = 0 lbs.
2. Multiply the change in annulus pressure by Column 5.
L2 = ∆P1 x Annulus Area Col. 5 = 3000 psi x –1.84 sq. in. = -5520 lb.
L1 + L2 = 0 + (-5520) = -5520<0 (tends to open unloader valve).
3. Multiply the tubing pressure by Column 3.
L3 = ∆P x Tubing ID Area Col. 3 = 0 psi x (-14.36 sq. in.) = 0 lb.

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SERVICE TOOLS TECHNICAL MANUAL
Subject: TST-2 16” Service Packer
Index No.: 2021 Revision: - Date: April 2004 Page 9 of 15

In our case, L1 + L2 + L3 = (0 + (-5520) + 0) lb. = -5520 lb., will tend to open the unloader valve.
Therefore, a minimum of 50,000 lb. + 5520 lb. = 55,520 lb. in order to set the tool and keep the unloader seal
closed.

When Annulus Pressure is Greater than Tubing Pressure at the Tool Due to Swabbing the
Tubing:
1. Multiply the change in tubing pressure by Column 6.
L1 = ∆P x Tubing Area Col. 6
2. Multiply the change in annulus pressure by Column 7.
L2 = ∆P1 x Annulus Area Col. 7
If the result is a force tending to open the unloader, and is greater than the original pack-off weight, additional set
down weight is required. This additional weight is equal to the difference between the force tending to open the
unloader and the required pack-off weight.
If L1 + L2 < 0, the unloader valve tends to open.
If L1 + L2 >0, the unloader valve tends to stay closed
Be sure to consult slack-off charts to determine whether the requisite amount of pipe weight can be put on the
tool. If slack-off weight is not sufficient, then drill collars may have to be used to put sufficient weight on the
tool.
Consult tubing movement simulation to insure that treating (tubing ballooning, thermal movement, etc.) does not
remove too much of the initial pipe weight.

Example Problem 3
Same example as above, except now ∆P= 0 psi. and ∆P1 = 3000 psi. due to swab-off.
1. Multiply the change in tubing pressure by Column 6.
L1 = ∆P x Tubing Area Col. 6 = 0 psi x 3.435 sq. in. = 0 lb.

2. Multiply the change in annulus pressure by Column 7.

L2 = ∆P1 x Annulus Area Col. 7 = 3000 psi x –1.84 sq. in. = -5520.
In this case, L1 + L2 = 0 lb. + (-5520) = -5520 lb., will tend to open the unloader.
Therefore an additional 5520 lbs will need to be added to the setdown weight for a total of 55,520 lbs to set the
packer, and keep the unloader seal closed.

16” TST-2 ASSEMBLY PROCEDURE

The 16” TST-2 Packer is configured to run in 16” casing having an ID range as described on page 2.
Identify the casing size, weight and element system to be used and dress the packer accordingly. Only one element
configuration is available and it consists of two end elements and a center element of 90-70-90 duro combination.
Visually inspect all parts. Make sure they are clean and free of any debris or burrs that may prevent assembly or
cause damage to o-rings during and after installation (See page 4). O-rings and packing element labels must
conform to Specification 265203 and be within shelf life.

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Subject: TST-2 16” Service Packer
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Assemble the following combinations of parts separately and without o-rings to catch problems before proceeding
too far:
™ Buttons in the receptacle
™ Slips in the cones
™ Drag blocks in the drag block housing
™ Keys in the key slots

Do’s and Don’t for 16” TST-2 Packer Assembly and Disassembly
DO DON’T
Use the recommended lubricants for straight threads Substitute other greases without approval from Service
and o-rings in this technical unit. Tools Engineering.
Visually inspect all parts prior to assembly and after Use parts that are damaged or repaired without
disassembly. consulting with Service Tools Engineering.
Visually inspect parts after installing o-rings. Use the packer if evidence of o-ring damage is present.
Use cranes, lifting bolts and heavy duty vises. Assemble or disassemble packer without lifting aids
and vises.
Discard all used seals, including the bypass seal after Re-use any rubber seals that have been run into the
the packer has been run. well.
Always use new seals within shelf life requirements at Use seals that have been in the well or are out of shelf
redress life.

Note: The following Steps 1 through 5 are best done vertically.

1. Lightly grease the O.D. of the Element Body. Install Bottom Gauge Ring (Item 22) onto the Packer Body.
Install an End Element (Item 24) then an Element Spacer (Item 23). Install the Center Element (Item 25).
Install the remaining Element Spacer (Item 23) and the remaining End Element (Item 24 ). A total of two End
elements, two Spacer Rings and one Center Element are now installed.
2. Install -338 O-ring (Item 20) into the O-ring groove on the Buttons (Item 19), quantity 21.
3. Liberally grease the 24 button holes in the Receptacle (Item 16). Install Buttons with O-rings into the
Receptacle. Lightly tap the buttons, if necessary, with a rubber mallet to allow alignment and seat in the
Receptacle. Avoid pinching which could result in O-rings being cut. Inspect for evidence of a cut O-ring after
installing. If found, remove the button, replace the O-ring and repeat installation. When complete, install the
springs (Item 21), quantity 3 per button. Install the Button Strap (Item 17), quantity of 8, and secure to the
Receptacle using 5/16-18 x 1” lg. flat head screws (Item 18), quantity of 3 screws per strap. Use allen head
wrench. Lightly grease the screws before installing.
4. Lightly grease the O.D. thread on the lower side of the Receptacle and the mating threads on the Upper Gauge
Ring (Item 22). Wrench tighten the Upper Gauge Ring onto the Receptacle.
5. Install -432 O-ring (Item 14) into the I.D. of the lower end of the Receptacle. Lightly grease the O-ring and
I.D. threads of the Receptacle.
6. Slowly insert the lower end of the Mandrel (Item #3) through the top of the Receptacle (Item #16) until the lugs
on the Mandrel shoulder inside the Receptacle.

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Subject: TST-2 16” Service Packer
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7. Lightly grease the I.D. threads on the lower end of the Packer (Element) Body (Item #26). Lightly grease the
I.D. of the fingers on the collet. Slide assembly collar tool (P/N 84033-1) over collet fingers aligning the screws
in between the collet fingers. Wrench tighten the Packer Body to the receptacle by wrenching on the collar.
Remove assembly collar tool.

8. Slide the top Receptacle Ring (Item 15, which also serves as a Strap Retainer) over the mandrel so that it fits
flush with the top end of the receptacle.
9. Install -439 O-ring (Item 12) onto the Balance Piston (Item 13). Lightly grease the o-ring. Install the Balance
Piston into the Balance Sleeve Retainer (Item 11). If necessary, lightly tap the Piston with a rubber mallet to
insert it into the Bypass Seal Sub. Lightly grease the O.D. of the Balance Piston.
10. Lightly grease the I.D. threads of the Balance Sleeve Retainer and the mating upper O.D. threads on the
Receptacle. If necessary, lightly tap with rubber mallet. Wrench tighten the Balance Sleeve Retainer onto the
Receptacle.
11. Install O-ring -254 (Item 10) onto the Seal Compressor (Item 8) and insert into the Balance Sleeve Retainer,
with the O-ring engaging the ID (of the Balance Sleeve Retainer)
12. Make up the Seal Compressor Retainer (Item 9) to the Balance Sleeve Retainer (Item 11) and wrench tight.
13. Install the Unloader Seal (Item 7) into the Unloader Seal Retainer (Item 6). Lightly grease the I.D. of the
Bypass Seal and install the combination of Unloader Seal and Unloader Seal Retainer over the top end of the
Mandrel. Avoid actions that would damage the Bypass Seal while forcing it onto the polished O.D. surface of
the Mandrel. Push the Bypass Seal Retainer onto the mandrel far enough to allow for the Top Sub (item 1)
assembly in the next step.
14. Install -243 O-ring (Item 2) on the upper end of the Mandrel. Lightly grease the o-ring and the upper threads on
the Mandrel. Install -249 O-ring (Item 4) into the outer groove of the Top Sub (Item 1). Lightly grease the I.D.
threads on the Top Sub (Item 1). Thread the Top Sub (item 1) onto the Mandrel, making it up fully until it
shoulders on the Mandrel. Back-off the Top Sub no more than ¼ turn in order to line up the keyways on the
two parts (Top Sub and Mandrel). Insert Key (Item 5), into the Top Sub and Mandrel. Lightly grease the O.D.
threads on the Top Sub. Slide the Bypass Seal Retainer (Item 6) up and onto the thread and wrench tighten to
the Top Sub. This will trap the Bypass Seal.

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SERVICE TOOLS TECHNICAL MANUAL
Subject: TST-2 16” Service Packer
Index No.: 2021 Revision: - Date: April 2004 Page 12 of 15

15. Place the Cone (Item 28) in a vice and install the Slip Stop Screws, quantity of 12 (Item 30). Grease the
external threads on the Packer Actuator Body (Item 27) on the side nearest to the flow ports. Make this up to
the internal threads on the cone and wrench tight. Note: There should never be a need to break this connection
during the disassembly process.
16. Carefully slide this assembly over the mandrel, (use an overhead crane or forklift to balance) Packer Body
Actuator first, and make up to the internal threads of the bottom gauge ring/packer element body assembly and
wrench tight.
17. Insert the Slips, (Item 29) quantity 12 into the Cone, and slide till the Slip Stop Screw makes contact at the end
of the slot, as if the packer slips were in the fully retracted position.
18. Grease the holes of the Drag Block (Item 35) and insert springs (Item 36), quantity of 48, 3 in each Drag Block
quantity of 16. Lightly grease the slots on the Drag Block Housing (also sometimes called a “Wiper Block
Body” - Item 37) and insert/slide the Drag Blocks with springs into the Drag Block Housing. It may be
necessary to place a thin flat surface for support when sliding the Drag Blocks in. A light tap with a rubber
mallet to overcome any resistance is also permissible.
19. Slide this assembly over the mandrel within close proximity to the slips. Rotate the assembly so that the lug
recess in the mandrel lines up with the window slot in the Drag Block Housing.
20. Insert the lug (item 34) into the mandrel (item 3) lug recess and fasten with the mandrel lug retainer (Item 33).
Use a thick flat head screw diver. Note: Use Blue Loc-tite on the threads to ensure fastening integrity Do not
use an impact wrench to fasten!
21. Locate the six segments of the Slip Retainer (Item 31). It is of the utmost importance that the segments are
installed with the engraved numbers side by side as shown. (slips not shown in this photo)
22. Position first segment so that T-slot will fit over lower end of slip. Other end of Slip Retainer Segment should
fit into L-groove of Drag Block Housing (item 37). Place a second segment adjacent to the first in the same
manner. This second segment will enclose one half of one slip plus another full slip, for a total of three slips
enclosed by two segments. Fasten these two segments with a Slip Retainer Screw (Item 32) using an allen head
wrench. Repeat with the remaining four segments

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SERVICE TOOLS TECHNICAL MANUAL
Subject: TST-2 16” Service Packer
Index No.: 2021 Revision: - Date: April 2004 Page 13 of 15

23. Fasten the Bottom Nut (Also called the Drag Block retainer - Item 38) to the Drag Block Housing (Item 37) and
wrench tight. Slide the Key Retainer (Item 39) over the mandrel threaded side facing down-hole, past the key
recess in the mandrel.
24. Install O-ring size -243 (Item #2) onto the lower end of the mandrel. Make up the Bottom Sub (Item 40) to the
mandrel, and then back off no more than ½ turn in order to line up the Key recess in the mandrel with the
Bottom Sub Slot. Insert Key (Item 5).
25. Make up Key Retainer (Item 39) to the bottom sub and wrench tightly.

DISASSEMBLY INSTRUCTIONS – READ ASSEMBLY INSTRUCTIONS PRIOR TO DISASSEMBLING

PACKER

Disassembly follows the assembly instructions in reverse order

PARTS LIST
16” TST-2 RETRIEVABLE SERVICE PACKER
Item # Part Number Description Qty
1 84021-1 Sub, Top 14.75 TST-2 Packer 1
2 46004243 O-Ring, 243 Ntrl , 90 Duro HM (For Mandrel) 2
3 84023-1 Mandrel, 14.75 TST-2 Packer 1
4 T46004249 O-Ring, 249 Ntrl, 90 Duro HM (for Top Sub) 1
5 84096-1 Key 14.75 TST-2 Packer 1
6 84035-1 Retainer, Seal 14.75 TST-2 Packer 1

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SERVICE TOOLS TECHNICAL MANUAL
Subject: TST-2 16” Service Packer
Index No.: 2021 Revision: - Date: April 2004 Page 14 of 15

7 84095-1 Seal, Unloader 14.75 TST-2 Packer 1

8 84025-1 Compressor, Seal 14.75 TST-2 Packer 1
9 84032-1 Retainer, Seal Compressor 14.75 TST-2 Packer 1
10 XAS-254-03 O-Ring, 254 Ntrl, 90 Duro HM 1
11 84022-1 Retainer, Balance Sleeve, 14.75 TST-2 Packer 1
12 XAS-439-03 O-Ring, 439 Ntrl, 90 Duro HM (For Balance Sleeve) 1
13 84024-1 Sleeve, Balance 14.75 TST-2 Packer 1
14 XAS-432-02 O-ring, 432 Ntrl, 90 Duro HM (For Receptacle) 1
15 84439-1 Ring, Receptacle Top 16” TST-2 Packer 1
16 84440-1 Receptacle, Packer 16” TST-2 Packer 1
17 84027-1 Strap, Button 14.75 TST-2 Packer 8
18 860231 Screw, Flat Csk Soc Hd 5/16-18 UNC x 1.00 Lg 24
19 84094-1 Button, Receptacle 14.75 TST-2 Packer 24
20 XAS-338-02 O-Ring, 338 Ntrl 90 Duro HM (For Buttons) 24
21 860116 Spring, Button 14.75 TST-2 Packer 72
22 84441-1 Ring, Top/Bottom 16” 65-84 ppf TST-2 Packer 2
84442-1 Ring, Top/Bottom 16” 109 ppf TST-2 Packer 2
23 84443-1 Spacer, Element 16” 65-84 ppf TST-2 Packer 2
84444-1 Spacer, Element 16” 109 ppf TST-2 Packer 2
24 71821 Element, Packing End 16” TST-2 Packer 2
25 71820 Element, Packing Center 16” TST-2 Packer 1
26 84445-1 Body, Packer 16” TST-2 Packer 1
27 84446-1 Body, Actuator 16” TST-2 Packer 1
28 84451-1 Cone, 16” TST-2 Packer 1
29 84028-1 Slip, 14.75 TST-2 Packer 12
30 854899 Screw, Slip Stop 3/8-16 x .5 lg 12
31 84447-1 Retainer, Slip 16” TST-2 Packer 1
32 868413 Screw, Slip Retainer 5/8-11 UNC x 2” lg 6
33 84093-1 Retainer, Lug 14.75 TST-2 Packer 1
34 84029-1 Lug, Mandrel 14.75 TST-2 Packer 1
35 84030-1 Dragblock, 14.75 TST-2 Packer 16
36 867619 Spring, Dragblock 14.75 TST-2 Packer 48
37 84448-1 Housing, Dragblock 16” TST-2 Packer 1
38 84449-1 Nut, Bottom 16” TST-2 Packer 1
39 84097-1 Retainer, Lower Key 14.75 TST-2 Packer 1
40 84031-1 Sub, Bottom 14.75 TST-2 Packer 1

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 BJ SERVICES COMPANY, USA
SERVICE TOOLS TECHNICAL MANUAL
Subject: TST-2 16” Service Packer
Index No.: 2021 Revision: - Date: April 2004 Page 15 of 15

ASSEMBLY VIEW
16.00 TST-2 RETRIEVABLE SERVICE PACK

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BJ Services Company, USA