Other

Douglas W Crawford

William Crawford

Mark S Crawford

Robert W Dinning

A side pocket mandrel arranged to receive a measuring instrument such as a pressure gauge in the open-bottomed side pocket thereof includes an electrical contact mounted at the top of the side pocket and connected to a cable extending upward to the surface, and an instrument lowered on a wireline kickover tool and inserted upward into the pocket and latched in place with a mating electrical connector automatically engaging the contact. Placement of the electrical contact at the top of the pocket prevents debris from settling around it and preventing reengagement after removal of the gauge for any reason.

Side pocket mandrel for a measuring instrument

In accordance with an illustrative embodiment of the present invention, a gas lift valve that is latched by a latch assembly into a seating bore in a side pocket mandrel includes a guide flange that is recieved in a slot in an internal wall of the mandrel. The guide flange functions to precisely rotationally orient and to stop the insertion of the valve within its seating bore such that a lateral gas outlet port in the valve body is directed inward toward the main bore of the mandrel. A frictional restraint also is provided to prevent accidental release of the latch assembly.

Oriented valve and latch for side pocket mandrel

In accordance with an illustrative embodiment of the present invention, a side pocket mandrel having a side pocket laterally offset from the open bore has an opening at the upper end of the pocket adapted to receive a gas lift valve. The axis of the opening is inclined in a downward and inward direction toward the axis of the open bore. A kickover tool for replacing and removing valves includes an orienting section having angularly spaced dogs that are cooperable with a sleeve in the mandrel to cause orientation of the tool and to trigger longitudinal movement of a control rod. Rod movement actuates guides on a pivot arm that cooperates with rails or the like in the mandrel to cause the valve to be inserted through the opening to a position extending upwardly into the annulus with a packing sub thereon engaging the opening.

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Lafavette, LA, United States of America

Douglas W Crawford