Method and related apparatus for retrieving a rotary pump from a

Details Method and related apparatus for retrieving a rotary pump from a Method and related apparatus for retrieving a rotary pump from a

1997-01-17

1999-02-16

Neuder, William

Wells

Processes

Disassembling well part

166105, 417360, E21B 2300

Patent

active

058710515

ABSTRACT:
A method and related apparatus for the retrieval of a rotary pump from a wellbore while leaving the pump's drive mechanism within the wellbore, comprises lowering a latch mechanism into a wellbore by a cable or coiled tubing and connecting the latch mechanism to the rotary pump suspended within the wellbore. Holding mechanisms, which removably connect the rotary pump to the pump's drive mechanism, are disengaged by pulling of the cable or coiled tubing, or by the application of hydraulic pressure. The latch mechanism and the pump are then retrieved from the wellbore, while the drive mechanism remains suspended within the wellbore.

REFERENCES:
patent: 4171934 (1979-10-01), Zehren
patent: 4272224 (1981-06-01), Kabele
patent: 5100302 (1992-03-01), Ceccherini
patent: 5405251 (1995-04-01), Sipin
patent: 5421780 (1995-06-01), Vukovic

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