Christopher W Jenkins

US Patent:

7219737, May 22, 2007

Filed:

Sep 21, 2004

Appl. No.:

10/946374

Inventors:

Melvin E. Kelly - Odessa TX, US
Christopher H. Jenkins - Odessa TX, US

International Classification:

E21B 29/12

US Classification:

166339, 166351, 166 811, 166 68

Abstract:

A subsea well pumping system for installing and retrieving a hydraulically actuated down hole pump employed within the tubing suspended within casing extending from above a seabed, the system having 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 the main valve, a removable pump latch sealably closing the pump lubricator at its upper end and having a pump catcher extending downwardly therefrom for removably latching onto the pump and a system for guiding the pump suspended form the pump catcher into the pump lubricator whereby the 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 the pump catcher by fluid injected into the casing.