Title:
SYSTEM AND METHOD FOR DRILLING RIG STATE DETERMINATION
Document Type and Number:
WIPO Patent Application WO/2018/038963
Kind Code:
A8
Abstract:
A system and method for drilling a borehole in a subsurface formation. A method includes receiving measured values indicative of operations performed by drilling equipment. The measured values include hookload values. The hookload values are analyzed to identify hookload values acquired while connecting a drill pipe, and a block weight value is set based on such a hookload value. The block weight value is subtracted from the hookload values to produce rebased hookload values. A rig state model produces a value for a state of the drilling equipment based on the measured values and the rebased hookload values. Responsive to the state of the drilling equipment, an operation performed to drill the subsurface formation is changed.
Inventors:
COLEY CHRISTOPHER (US)
Application Number:
PCT/US2017/046864
Publication Date:
April 19, 2018
Filing Date:
August 15, 2017
Export Citation:
Assignee:
BP CORP NORTH AMERICA INC (US)
International Classes:
E21B44/00; E21B7/02
Attorney, Agent or Firm:
POLIAK, John (US)
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