Drillable bridge plug

Details Drillable bridge plug Drillable bridge plug

2011-07-19

2011-07-19

Thompson, Kenneth (Department: 3672)

Wells

Packers or plugs

With expanding anchor

C166S376000, C166S217000

Reexamination Certificate

active

07980300

ABSTRACT:
A drillable bridge plug comprising a mandrel, a sealing element disposed around the mandrel, a plurality of backup rings adjacent the sealing element, a lower slip assembly disposed around the mandrel, an upper slip assembly disposed around the mandrel, an upper cone adjacent the upper slip assembly and engaged with the mandrel with at least one axial locking apparatus and at least one rotational locking apparatus, and a lower cone adjacent the lower slip assembly and engaged with the mandrel with at least one axial locking apparatus and at least one rotational locking apparatus. A drillable bridge plug comprising a mandrel and at least one slip assembly at least partially made of a material having less than 10% elongation.

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Anonymous, RD 435124, A Removal Downhole Plug, Jul. 10, 2000.
U.S. Office Action for related U.S. Appl. No. 11/967,881; dated Oct. 16, 2009. (12 pages).
U.S. Office Action for related U.S. Appl. No. 11/967,881 dated Mar. 16, 2010 (6 pages).
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Office Action dated Nov. 29, 2010 in corresponding U.S. Appl. No. 12/877,772. 8 pages.

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