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.

Date of Patent:
Oct. 10, 2017

Filed:

Jul. 28, 2014
Applicant:

Tesco Corporation, Houston, TX (US);

Inventors:

James Tyler Wilson, Katy, TX (US);

Ryan Thomas Bowley, Calgary, CA;

Brent James-William Coombe, Calgary, CA;

Colin Trevor Maxwell, Elnora, CA;

Doug Christian Greening, Calgary, CA;

Assignee:

Tesco Corporation, Houston, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/042 (2006.01); E21B 19/16 (2006.01); E21B 3/035 (2006.01);
U.S. Cl.
CPC ...
E21B 19/166 (2013.01); E21B 3/035 (2013.01); E21B 17/042 (2013.01);
Abstract

A drilling system includes a multi-function sub configured to be coupled to a top drive of a drilling rig and configured to be coupled to a tubular in order to selectively transfer a torque from the top drive to the tubular. The multi-function sub includes a torque sensing component configured to measure the torque provided from the top drive to the tubular via the multi-function sub, a clutch configured to suspend a transfer of torque from the top drive to the tubular when the clutch is released, and a clutch actuator communicatively coupled to the torque sensing component and configured to release the clutch when the torque measured by the torque sensing component is greater than a threshold torque value. The multi-function sub also includes a compensator configured to enable the multi-function sub to move the tubular in an axial direction relative to the top drive.


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