Measuring and testing – Borehole or drilling – During drilling
Reexamination Certificate
2006-06-20
2006-06-20
Williams, Hezron (Department: 2856)
Measuring and testing
Borehole or drilling
During drilling
C073S152030
Reexamination Certificate
active
07062959
ABSTRACT:
A method and apparatus is provided to determine downhole pressures, such as annular pressure and/or pore pressure, during a drilling operation. A downhole drilling tool includes at least one conduit and a corresponding gauge. The conduit is positioned in the downhole tool and has an opening adapted to receive downhole fluids. The conduit is positionable in fluid communication with one of the wellbore and the formation whereby pressure is equalized therebetween. The gauge is provided for measuring the pressure in the conduit.
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Fisseler Patrick J.
Follini Jean-Marc
Kurkjian Andrew L.
Palmer, II Thomas W.
Zazovsky Alexander
Echols Brigitte L.
Fitzgerald John
Salazar J. L. Jennie
Schlumberger Technology Corporation
Segura Victor H.
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