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:
Feb. 04, 1992
Filed:
Oct. 05, 1990
Applicant:
Inventor:
Malcolm G Coone, Katy, TX (US);
Assignee:
Davis-Lynch, Inc., Houston, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ; F16L / ;
U.S. Cl.
CPC ...
166242 ; 166285 ; 285-3 ; 285165 ; 285302 ;
Abstract
There is disclosed an oil or gas well having a well bore which penetrates a production zone and a casing string which is anchored in the well bore by a column of cement bonded to the casing string and well bore. Connectors are installed as part of the casing string to permit portions thereof opposite the production zone and above the production zone to be respectively contracted or extended in response to subsidence or other causes of axial loading of the string through the cement column.