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. 30, 1982
Filed:
Nov. 28, 1980
Applicant:
Inventor:
Wilton Gravley, Carrollton, TX (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ; E21B / ;
U.S. Cl.
CPC ...
175 61 ; 166223 ; 175320 ;
Abstract
A rotary method and arrangement mitigate differential sticking of a drill string during the drilling of a wellbore and for improving cuttings removal. Tool joints are used for interconnecting joints of drill pipe together into a drill string for use in drilling the wellbore. Nozzles are provided in the tool joints or drill pipe to cause a flow of drilling fluid into the wellbore from the interior of the drill string during the drilling operation to improve removal of the cuttings from the wellbore and mitigate differential sticking of the drill string.