Measuring and testing – Borehole or drilling – Downhole test
Patent
1994-04-08
1995-05-16
Williams, Hezron E.
Measuring and testing
Borehole or drilling
Downhole test
73152, 175 39, 175 50, E21B 4900
Patent
active
054150302
ABSTRACT:
A method for evaluating formations and bit conditions is presented. The present invention processes signals indicative of downhole weight on bit (WOB), downhole torque (TOR), rate of penetration (ROP) and bit rotations (RPM), while taking into account bit geometry to provide a plurality of well logs and to optimize the drilling process. Drilling operations are monitored and adjusted in response to these processed signals and logs. The processed signals may include the following signals: drilling response, differential pressure, pore pressure, porosity, porosity compensated for formation effects, drilling alert, bit wear factor, abnormal torque, and bearing wear. The logs may include a drilling response log, a differential pressure log, a porosity log, a porosity log compensated for formation effects, a drilling alert log, a wear factor log, a torque analysis log and a bearing wear log.
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European Search Report.
Jogi Pushkar N.
Zoeller William A.
Baker Hughes Incorporated
Brock Michael J.
Williams Hezron E.
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