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:
Aug. 01, 1978
Filed:
Dec. 10, 1976
Applicant:
Inventor:
James F Arnold, Houston, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175 61 ; 166255 ; 166242 ;
Abstract
A method for inhibiting the wear in a well casing is accomplished by determining the depths within a bore hole of a well where a drill string may contact the well casing. The casing is then run into the bore hole with one or more hardened wear sections positioned therein for ultimate landing at the depths where the drill string may contact the casing.