Dual-type plug for wellhead

Details Dual-type plug for wellhead Dual-type plug for wellhead

2004-05-19

2010-02-02

Beach, Thomas A (Department: 3671)

Wells

Submerged well

Wellhead

C166S337000, C166S116000, C166S135000, C166S086100

Reexamination Certificate

active

07654329

ABSTRACT:
The invention concerns a dual-type plug to be used in a wellhead. The plug has a separate retrievable inner plug (50). Retrieving only the inner plug allows the use of lighter workover equipment than if the whole plug (10) must be pulled.

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