Donald W Grubbs

US Patent:

7331397, Feb 19, 2008

Filed:

Nov 12, 2004

Appl. No.:

10/986694

Inventors:

Allen Wagley - Houston TX, US
Donald H. Grubbs - Ventura CA, US

Assignee:

Jet Lifting Systems, Ltd - Odessa TX

International Classification:

E21B 43/00

US Classification:

166372, 166328, 417151

Abstract:

A passive collection and pneumatic lifting system located in a well comprising a pneumatic tube, a fluid tube mounted within the pneumatic tube creating an annulus and a jet barrel chamber formed between the pneumatic tube and fluid tube in fluid communication at the zone to be recovered. A valve in the jet barrel in communication with the jet barrel and the zone to be recovered for allowing passive flow of product to be recovered into the jet barrel for collection therein and for closing upon the introduction of pneumatic fluid pressure by a pneumatic pressure generator to generate pneumatic fluid pressure sufficient to drive the product collected in the jet barrel up hole for recovery. A seal is located below the valve for sealing the product zone in the well from flow except through the valve.