Measuring and testing – Fluid pressure gauge
Reexamination Certificate
2007-09-14
2010-10-05
Caputo, Lisa M (Department: 2855)
Measuring and testing
Fluid pressure gauge
C073S756000
Reexamination Certificate
active
07805999
ABSTRACT:
A system for measuring pressure in a well borehole using two pressure sensing gauges that are exposed to an area of common pressure. Pressure measurements are made with preferably two pressure gauge assemblies each containing a single pressure sensing gauge. The two pressure gauge assemblies are removably disposed within a receptacle or “pocket” in the outer surface of a wall of a formation tester tool section. When disposed or “side loaded” in the pocket, the gauges within the pair of assemblies are axially aligned and positioned in a plane that is normal to the radius of the formation tester tool section. Both pressure sensing gauges can be connected to respond to the same fluid pressure originating from a probe or port section of a formation tester tool. By disposing the pressure gauge assemblies in a receptacle or “pocket” in the outer surface or wall of a formation tester tool section, the pressure sensing gauges are exposed to wellbore fluids. Pressure sensing gauges are selected to have low mass. The low mass of the gauges and a cooperating heater assembly allow the pressure gauges to rapidly thermally stabilize with changing temperatures in the wellbore.
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U.S. Appl. No. 11/626,461, filed Jan. 24, 2007, Kasperski.
Rourke, Marvin, et al. “A New Hostile Environment Wireline Formation Testing Tool: A Case Study From the Gulf of Thailand” SPWLA 47th Annual Logging Symposium, Jun. 4-7, 2006, pp. 1-14.
Combined Search and Examination Report from GB patent application No. 0812710.2, dated Oct. 1, 2008.
Kasperski Bryan William
Roessler Dennis Eugene
Waid Margaret Cowsar
Caputo Lisa M
Jenkins Jermaine
Precision Energy Services, Inc.
Wong, Cabello, Lutsch, Rutherford & Brucculeri L.L.P.
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