Measuring and testing – Borehole or drilling – Pressure measurement
Reexamination Certificate
2007-07-17
2007-07-17
Williams, Hezron (Department: 2856)
Measuring and testing
Borehole or drilling
Pressure measurement
Reexamination Certificate
active
11069649
ABSTRACT:
A method of determining the supercharge pressure in a formation intersected by a borehole having a wall, the method comprising disposing a formation pressure test tool into the borehole having a probe for isolating a portion of the borehole. The method further comprises extending the probe into sealing contact with the borehole wall. The method further comprises performing at least one drawdown test with the formation pressure test tool. The method further comprises modeling the supercharge pressure of the formation using the dynamic properties of the mudcake. The method further comprises determining the supercharge pressure of the formation using the supercharge pressure model. The formation pressure test tool may be conveyed into the borehole using wireline technology or on a drill string. Using the supercharge pressure, the drawdown test may be optimized, the characteristics of the drilling fluid altered, or the measurements of other sensors adjusted.
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Beique Jean Michel
Chin Wilson Chung-Ling
Fogal James M.
Gray Glenn C.
Hardin, Jr. John R.
Conley & Rose, P.C.
Fitzgerald John
Halliburton Energy Services Inc
Williams Hezron
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