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:
Jun. 16, 2015
Filed:
Oct. 30, 2012
Applicant:
Tesco Corporation, Houston, TX (US);
Inventor:
Jonathan Brian O'Blenes, Calgary, CA;
Assignee:
Tesco Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 40/00 (2006.01); E21B 44/00 (2006.01); E21B 23/01 (2006.01); E21B 41/00 (2006.01); E21B 19/16 (2006.01);
U.S. Cl.
CPC ...
E21B 44/00 (2013.01); E21B 23/01 (2013.01); E21B 40/00 (2013.01); E21B 41/0021 (2013.01); E21B 19/165 (2013.01);
Abstract
Present embodiments are directed to a tubular catcher system configured to detect a falling tubular through a drilling rig and grip the tubular before it drops into the wellbore. A sensor configured to detect the velocity or acceleration of the tubular activates an actuation mechanism when the velocity or acceleration exceeds a specific threshold, indicating a falling tubular. The actuation mechanism forces a gripping mechanism into contact with the tubular, catching the tubular and sending energy from the tubular to a hydropneumatic shock absorber coupled to the actuation mechanism and/or the gripping mechanism.