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. 19, 1995
Filed:
Aug. 23, 1994
Applicant:
Inventor:
Gary L Galle, Houston, TX (US);
Assignee:
ABB Vetco Gray Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166348 ; 166367 ; 166378 ; 166381 ;
Abstract
A method of tensioning casing between a subsea well and a surface wellhead employs an adjustment sub. The adjustment sub has upper and lower portions connected together by a threaded section. The running tool locates within the adjacent sub and is employed to secure the lower end of the casing to a tieback latch within the subsea housing. Continued rotation shears out a lower portion of the running tool, causing the threaded section to rotate relative to at least one of the other portions. Rotation of the threaded section brings a hanger on the upper sub portion downward into engagement with a load shoulder in the surface housing.