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:
Mar. 25, 2014
Filed:
Sep. 29, 2010
Erik P. Eriksen, Calgary, CA;
Erik P. Eriksen, Calgary, CA;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A casing drilling assembly includes a profile sub having an interior profile shoulder and secured a casing string. A bottom hole assembly is run into and retrievable from the casing string. Stop dogs carried by the bottom hole assembly lands on the profile shoulder and stop downward movement of the bottom hole assembly, positioning an underreamer below the casing string. A mandrel is coupled to the bottom hole assembly. An elastomeric sleeve encircles the mandrel below a setting ring. A running tool releasably couples to the mandrel and moves the setting ring downward relative to the mandrel to a lower position to deform the sleeve into frictional engagement with the casing string and the mandrel to transmit torque and axial load between the bottom hole assembly and the casing string.