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:
Jul. 06, 2021
Filed:
Jan. 18, 2018
Applicant:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Inventors:
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 19/16 (2006.01); E21B 21/10 (2006.01); E21B 21/12 (2006.01); E21B 21/08 (2006.01);
U.S. Cl.
CPC ...
E21B 19/161 (2013.01); E21B 21/106 (2013.01); E21B 19/165 (2013.01); E21B 19/168 (2013.01); E21B 21/085 (2020.05); E21B 21/12 (2013.01); E21B 2200/06 (2020.05);
Abstract
An iron roughneck for constant circulation of drilling mud during operation of a drill string, the iron roughneck comprising: a frame; a wrench unit supported by the frame, wherein the wrench unit is capable of gripping a drill string; a spinner unit supported by the frame, wherein the spinner unit is capable of engaging and spinning a drill pipe; and a circulation coupler supported by the frame, wherein the circulation coupler forms a chamber around the drill string.