A Packoff

A Packoff

Purpose

The A Pack Off is designed to pack off the wellbore via an expandable rubber element. It is used in tandem as a straddle pack-off for isolating and containing deteriorated or damaged tubing. It also can be used as a standalone pack off when conventional plugging equipment is not available.

Description

The BT “A” Pack off assembly can be used for a number of different wireline operations, it can be attached to a second element assembly via a flow tube that threads in the bottom of the upper element assembly and the top of the lower, tubing stops above and below are used to lock the pack off in place. The “A” pack off assembly may also be used individually for other applications, the most common being a standalone pack off for packing off tubing where a conventional plug is not available, or profile nipples are absent.

*PLEASE STATE DESIRED EQUALIZING ASSY. WHEN ORDERING.

Operation

It is designed to be set on a tubing stop and is set at the desired location in the wellbore (whether used as a straddle pack off or standalone).

The setting process consists of jarring down on the pack off in an attempt to expand the rubber elements up and over the mandrel and bring it into contact with the tubing wall at which point a seal is made (a tubing stop is recommended to hold the pack off in place, as there is no locking mechanism on this pack off).

Retrieval of the pack off consists of balancing pressure above and below
the pack off generally with a kobes plug, latching the fishneck and retrieving
from wellbore.

Camco A Pack Off

Nominal Size

1.900”

2.062”

2.375”

2.875”

Assembly Number

1004AP150A0

1004AP175A0

1004AP200A0

1004AP250A0

Item

Part Name


1

Mandrel

1004AP15001

1004AP17501

1004AP20001

1004AP25001

2

Element (3 pcs)

1004AP15002

1004AP17502

inquire

Inquire

3

Body

1004AP15003

1004AP17503

1004AP20003

1004AP25003

4

Split Collar

1004AP15004

1004AP15004

n/a

n/a

5

Cap

1004AP15005

1004AP15005

1004AP20005

1004AP25005

6

O-Ring

119

119

123

128

7

O-Ring

018

018

218

325

Lower Thread Connection





Max O.D.

1.468”

1.54”

1.84”

2.281”

Fishneck size

1.00”

1.18”

1.37”

1.75”



Nominal Size

3.00”

4.00”

Assembly Number

1001PU300A0

1001PL400A0

Item

Part Name


1

Fishneck

1001PU30001

n/a

2

Mandrel

1001PL30001

1001PL40001

3

Element

1001PL30002

1001PL40002

4

Top Sub

1001PL30003

1001PL40003

5

Spacer

1001PL30004

1001PL40004

6

Ratchet

1001PL30005

1001PL40005

7

Spring Clip

1001PL30006

1001PL40006

8

Lock Nut

1001PL30007

1001PL40007

9

Body

1001PL30008

1001PL40008

10

O-Ring

223

229

11

O-Ring

226

232

Lower Thread Connection

2.375” 10RD NUE

2.24” – 12 SLB

Max O.D.

2.719”

3.75””

Fishneck size

2.31” (Internal)

3.125” (Internal)


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