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:
Oct. 20, 1981
Filed:
Dec. 27, 1979
Applicant:
Inventors:
Eugene E Baker, Duncan, OK (US);
David D Szarka, Duncan, OK (US);
Assignee:
Halliburton Company, Duncan, OK (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166278 ; 166 51 ; 166127 ; 166128 ;
Abstract
A method and apparatus for gravel packing a producing formation or zone in a well without inducing fluid movement across the zone being packed during reverse circulation. Packing and reverse circulation are effected without any movement of the tool string from the time packing is initiated. Bypass and dump valves are incorporated in the isolation gravel packer to facilitate movement of the tool string within the well bore before and after packing a zone.