Wells – Processes – Sampling well fluid
Reexamination Certificate
2007-08-21
2007-08-21
Bagnell, David (Department: 3672)
Wells
Processes
Sampling well fluid
C166S162000, C073S864350, C073S864620
Reexamination Certificate
active
11248734
ABSTRACT:
A method and apparatus store energy in an energy storage medium located in an energy storage chamber. As a sampling tool descends into the borehole, the energy storage medium is pressurized with hydrostatic pressure. A sample is collected in a sample chamber by pumping formation fluid into the sample chamber against hydrostatic pressure. The energy storage medium applies the energy stored in the energy storage medium to the sample through a pressure communication member. A pressure multiplier member increases the pressure applied on the sample by the energy storage medium through the pressure communication member to keep pressure on the sample. A biasing water pressure is applied to the sample at the surface so that the energy storage chamber can be removed from the sample chamber.
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Bullock Harry Wade
Sanchez Francisco Galvan
Shammai Michael
Bagnell David
Baker Hughes Incorporated
Madan Mossman & Sriram P.C.
Stephenson Daniel P
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