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:
Sep. 29, 1981
Filed:
Jan. 14, 1980
Applicant:
Inventor:
Robert J Diehl, Wallis, TX (US);
Assignee:
W-K-M Wellhead Systems, Inc., Shreveport, LA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166315 ; 166 83 ; 166 88 ; 277 73 ;
Abstract
A packing assembly is mounted in the annular space between a tubing hanger and a tubing head of a wellhead assembly. The packing is bottomed on a shoulder of the tubing hanger and energized after the tubing hanger has been fully seated within the tubing head by the injection of a lubricant or the like against an upper annular piston member which compresses the packing. The piston member is locked to the tubing hanger after the packing has been compressed between the facing annular surfaces of the tubing head and tubing hanger and the entire packing assembly then moves with the tubing hanger.