Apparatus for releasably bridging a well

Details Apparatus for releasably bridging a well Apparatus for releasably bridging a well

1981-11-09

1984-02-21

Pate, III, William F.

Wells

Packers or plugs

With expanding anchor

166135, 166217, 166184, 166123, E21B 33128, E21B 33129

Patent

active

044324189

ABSTRACT:
A novel and improved method and means have been devised for releasably bridging or isolating formations in a well. The apparatus consists of a retrievable bridge plug which can be run down into a well to the desired setting depth and a packer assembly on the plug can then be activated to set the apparatus in position. After work has been performed, a retrieving tool is run into the well in order to engage the bridge plug for its removal. If sand or other foreign matter is present on top of the plug, a circulating medium may be employed to remove the foreign matter even as the retrieving tool is being lowered into engagement with the plug. The plug is designed such that pressure can be equalized on opposite sides of the plug as a preliminary to removal from the well by the retrieving tool.

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