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U.S. Department of Energy
Office of Scientific and Technical Information

Drilling subsurface wellbores with cutting structures

Patent ·
OSTI ID:1014723

A system for forming a wellbore includes a drill tubular. A drill bit is coupled to the drill tubular. One or more cutting structures are coupled to the drill tubular above the drill bit. The cutting structures remove at least a portion of formation that extends into the wellbore formed by the drill bit.

Research Organization:
Shell Oil Company (Houston, TX)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
Shell Oil Company (Houston, TX)
Patent Number(s):
7,841,425
Application Number:
US Patent Application 12/106,115
OSTI ID:
1014723
Country of Publication:
United States
Language:
English

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