Title:
STATUS INDICATORS FOR USE IN EARTH-BORING TOOLS HAVING EXPANDABLE MEMBERS AND METHODS OF MAKING AND USING SUCH STATUS INDICATORS AND EARTH-BORING TOOLS
Document Type and Number:
WIPO Patent Application WO/2012/047847
Kind Code:
A8
Abstract:
A status indicator for determining a position of an extendable member in an expandable apparatus. The status indicator is configured to decrease a cross-sectional area of a portion of a fluid path extending through an expandable causing a pressure of a fluid within the fluid path to increase when an extendable member of the expandable apparatus is in an extended position. By determining the pressure of the fluid within the fluid path, one can determine the position of the status indicator within the fluid path and thereby determine whether the extendable member of the expandable apparatus is in the extended or a retracted position.
Inventors:
RADFORD STEVEN R (US)
TRINH KHOI Q (US)
TRINH KHOI Q (US)
Application Number:
PCT/US2011/054707
Publication Date:
November 29, 2012
Filing Date:
October 04, 2011
Export Citation:
Assignee:
BAKER HUGHES INC (US)
RADFORD STEVEN R (US)
TRINH KHOI Q (US)
RADFORD STEVEN R (US)
TRINH KHOI Q (US)
International Classes:
E21B10/32; E21B7/28; E21B34/06
Attorney, Agent or Firm:
WELBORN, Brian, S. et al. (Intellectual Property CounselP.O Box 474, Houston TX, US)
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