Closed loop drilling system

Details Closed loop drilling system Closed loop drilling system

1996-10-22

1998-11-24

McElheny, Jr., Donald E.

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Earth science

G06F 1900

Patent

active

058421491

ABSTRACT:
The present invention provides a closed-loop drilling system for drilling oilfield boreholes. The system includes a drilling assembly with a drill bit, a plurality of sensors for providing signals relating to parameters relating to the drilling assembly, borehole, and formations around the drilling assembly. Processors in the drilling system process sensors signal and compute drilling parameters based on models and programmed instructions provided to the drilling system that will yield further drilling at enhanced drilling rates and with extended drilling assembly life. The drilling system then automatically adjusts the drilling parameters for continued drilling. The system continually or periodically repeats this process during the drilling operations. The drilling system also provides severity of certain dysfunctions to the operator and a means for simulating the drilling assembly behavior prior to effecting changes in the drilling parameters.

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Hutchinson, et al., AN MWD "Downhole Assistant Driller." Society of Petroleum Engineers, pp. 743-752 (Oct. 1995).
J.D. Barr, et al. "Steerable Rotary Drilling With an Experimental System." Society of Petroleum Engineers, pp. 435-450 (1995).

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