Patent ID: 7219737
Filing Date: 2007-05-22
Classification: E21B

Abstract:
1. A subsea well pumping system for installing and retrieving a hydraulically actuated down hole pump employed within tubing suspended within casing extending from above a seabed, the system including: a wellhead assembly affixed to the upper end of the casing for supporting the tubing and including provision for hydraulically communicating with the interior of the casing and the tubing; a remotely controllable main valve affixed to the tubing at its upper end; a tubular pump lubricator affixed at its lower end to said main valve; a removable pump latch sealably closing said pump lubricator at its upper end and having a pump catcher extending downwardly therefrom for removably latching onto the hydraulically actuated down hole pump; and a system for guiding the hydraulically actuated down hole pump suspended from said pump catcher into said pump lubricator whereby the down hole pump can be moved downwardly in the tubing into a pumping position by fluid injected into the tubing and can be moved upwardly in the tubing into a retrievable position for grasping by said pump catcher by fluid injected into said casing.