Wells – Processes – Placing or shifting well part
Patent
1996-03-18
1997-12-23
Bagnell, David J.
Wells
Processes
Placing or shifting well part
166 68, 166106, E21B 2301, E21B 4300
Patent
active
056998589
ABSTRACT:
A well pump system including a pulldown anchor which may be lowered into a wellbore on a flexible cable having both ends of the cable retained at the surface until the pulldown anchor reaches a position which will cause a spring biased pawl to prevent the pulldown anchor from being moved upwardly in the well. One end of the cable is then connected to a casing anchor and an elongated casing connected to the casing anchor which is then pulled into the well by the flexible cable. The casing anchor includes a mechanism for actuation upon engagement with the pulldown anchor to cause the casing anchor to be secured in the wellbore and to release the cable for retrieval from the well. The flexible casing is tensioned and secured to the wellhead and a rod actuated pump is then installed in the casing on a tubing string having a hydraulically actuated pump anchor member and release valve connected between the tubing string and the pump so that the pump may be secured in a predetermined position in the casing and released for movement within the casing when desired.
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patent: 4744334 (1988-05-01), McAnally
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