Double swab barrier and method for producing and wireline interv

Details Double swab barrier and method for producing and wireline interv Double swab barrier and method for producing and wireline interv

1997-01-08

1998-05-26

Bagnell, David J.

Wells

Processes

Assembling well part

166 7513, 166 971, E21B 3303

Patent

active

057552908

ABSTRACT:
An additional barrier for a production tree works in conjunction with a conventional swab barrier. A spool with a bore is mounted on the tree above the swab valve. A tree cap is secured to the top of the spool. The spool has a nipple profile in its bore for receiving a multi-part retrievable plug. The plug is located across the junction between the tree cap and the tree and is wireline retrievable.

REFERENCES:
patent: 3536344 (1970-10-01), Nelson
patent: 4130161 (1978-12-01), Jones
patent: 5000719 (1991-03-01), Reed
patent: 5020590 (1991-06-01), McLeod
patent: 5025857 (1991-06-01), McLeod
patent: 5285852 (1994-02-01), McLeod

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