Drillable bridge plug

Details Drillable bridge plug Drillable bridge plug

2005-02-23

2008-09-16

Chilcot, Jr., Richard E. (Department: 3635)

Wells

Packers or plugs

With expanding anchor

Reexamination Certificate

active

07424909

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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Combined Search and Examination Report; British Patent Office; Appl. No. GB0503938.3; Dated Apr. 18, 2005; 6 pages.
Combined Search and Examination Report; British Patent Office; Appl. No. GB0524775.4; Dated Feb. 10, 2006; 4 pages.

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