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Title: Inductive shearing of drilling pipe

Patent ·
OSTI ID:1247999

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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
TRANSOCEAN INNOVATION LABS LTD (George Town, KY)
Patent Number(s):
9,316,078
Application Number:
13/844,057
OSTI ID:
1247999
Resource Relation:
Patent File Date: 2013 Mar 15
Country of Publication:
United States
Language:
English

References (5)

Blowout preventer, shear ram, shear blade and seal therefor patent March 1987
Induction severing apparatus patent July 1993
Induction heating apparatus patent May 2004
Thermal and High Magnetic Field Treatment of Materials and Associated Apparatus patent-application October 2006
Control System for Blowout Preventer Stack patent-application August 2009

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