Wells – Processes – Sampling well fluid
Reexamination Certificate
2006-11-28
2006-11-28
Bagnell, David (Department: 3672)
Wells
Processes
Sampling well fluid
C166S100000, C175S059000, C073S152240
Reexamination Certificate
active
07140436
ABSTRACT:
A formation testing tool and method for providing pressure controlled sampling is provided. A flow line delivers formation fluid to a sample chamber in the testing tool. A first valve controls the flow of formation fluid from the flow line to the sample chamber. A piston is slidably disposed in the sample chamber to define a sample cavity and a actuation cavity having variable volumes determined by movement of the piston. An actuator is also provided to move the piston in a first direction to increase the volume of the sample cavity and a second direction to decrease the volume of the sample cavity whereby formation fluid may be drawn into the sample cavity and pressurized therein using the actuator and the first valve.
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Grant Douglas W.
Harrigan Edward
Traboulay Ian
Abrell Matthias
Bagnell David
Bomar Shane
Salazar J.L. Jennie
Schlumberger Technology Corporation
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