Thru tubing bridge plug and method

Details Thru tubing bridge plug and method Thru tubing bridge plug and method

E - Fixed Constructions

21

B

E21B 33/134 (2006.01) E21B 23/06 (2006.01) E21B 33/12 (2006.01) E21B 33/128 (2006.01) E21B 33/129 (2006.01)

Patent

CA 2191410

A bridge plug assembly (10) contracts radially inwardly to pass through tubing string (T) and then expands radially outwardly in response to axially compressive forces to set within a casing string (C). Upper and lower independently moveable slips (52) and (54) of the anchor mechanism (12) engage casing (C). The packoff mechanism (14) includes a plurality of upper sealing members (160, 162, 164) and a plurality of lower sealing members (166, 168, 170) having varying elasticity such that at least some of the sealing members overlap other sealing members when the bridge plug (10) is compression set in the casing (C). The bridge plug assembly (10) is retained in a contracted position for passing downwardly through tubing (T), then expanded for sealing engagement with casing (C). The bridge plug (10) may be run-in with a setting tool (ST) and may be subsequently released by a releasing tool (RT) to drop within the well.

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