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:
Apr. 19, 2016
Filed:
Mar. 15, 2013
Applicant:
Transocean Sedco Forex Ventures Limited, George Town Grand Cayman, KY;
Inventors:
Gerard M. Ludtka, Oak Ridge, TN (US);
John Wilgen, Oak Ridge, TN (US);
Roger Kisner, Farragut, TN (US);
Timothy Mcintyre, Farragut, TN (US);
Assignee:
TRANSOCEAN INNOVATION LABS LTD, George Town, KY;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 29/02 (2006.01); E21B 43/11 (2006.01); E21B 29/08 (2006.01); E21B 33/064 (2006.01);
U.S. Cl.
CPC ...
E21B 29/02 (2013.01); E21B 29/08 (2013.01); E21B 33/064 (2013.01); E21B 43/11 (2013.01);
Abstract
Induction shearing may be used to cut a drillpipe at an undersea well. Electromagnetic rings may be built into a blow-out preventer (BOP) at the seafloor. The electromagnetic rings create a magnetic field through the drillpipe and may transfer sufficient energy to change the state of the metal drillpipe to shear the drillpipe. After shearing the drillpipe, the drillpipe may be sealed to prevent further leakage of well contents.