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:
Nov. 08, 1994
Filed:
Jun. 17, 1993
Applicant:
Inventor:
D Wayne Van Winkle, Houston, TX (US);
Assignee:
Drexel Oilfield Services, Inc., Conroe, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166 84 ; 175195 ; 277 31 ;
Abstract
An annular packer (P) with an axial bore (21) includes an elastomer body (23) with inserts (22) partially embedded therein and spaced circumferentially about the axial bore (21). The inserts (22) each support an element (24') embedded in the elastomer body (23) which move into the axial packer bore (21) beyond the inserts when an external compressive force is applied to the elastomer body to reduce the diameter of the axial bore (21) and to provide support for and inhibit extrusion of the elastomer body (23) that is moved into the axial bore by the compressive force.