The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 1986
Filed:
Oct. 21, 1985
Applicant:
Inventors:
James B Renfroe, Jr, Valencia, CA (US);
Rennie L Dickson, Carrollton, TX (US);
Roger D Rion, The Colony, TX (US);
Assignee:
Otis Engineering Corporation, Carrollton, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
1661055 ; 166106 ; 166188 ; 166321 ;
Abstract
A pump produces through a tubing in a cased well. Gas is vented through the packer and through a valve preferably located in a side pocket mandrel in the tubing. A subsurface safety valve is positioned in the tubing below the side pocket mandrel and preferably below the packer. The safety valve is preferably of the flapper type and when the valve is closed liquid is automatically recirculated to the pump.