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Patent Searching and Data


Title:
FORMATION PRESSURE SENSING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2013/052996
Kind Code:
A1
Abstract:
A method of installing a pressure transducer in a borehole to measure the fluid pressure of a geological formation. The pressure transducer is installed into the borehole at a desired depth, and then the borehole is filled with a cement grout. The fluid connection between the pressure transducer and the formation is opened by pumping a fluid through tubing to displace the cement grout. A process of hydrofracture can be employed to provide a communication path of fluid between the formation and the pressure transducer surrounded by the fractured grout. In one embodiment of the invention, a pressure transducer is cemented into the borehole along with a check and pressure relief valve. In another embodiment, the pressure transducer is installed in the tubing at a subsequent stage.

Inventors:
GRAY IAN (AU)
Application Number:
PCT/AU2012/001221
Publication Date:
April 18, 2013
Filing Date:
October 10, 2012
Export Citation:
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Assignee:
GRAY IAN (AU)
International Classes:
E21B47/06; E02D1/00; E02D33/00; E21B49/00
Domestic Patent References:
WO2003029614A22003-04-10
WO2010128943A12010-11-11
WO2003029614A22003-04-10
Other References:
DATABASE WPI Week 199219, Derwent World Patents Index; AN 1992-156828, XP003033735
IAN GRAY: "Reservoir Engineering in Coal Seams: Part 2 - Observations of Gas Movement in Coal Seams", SPE RESERVOIR ENGINEERING, February 1987 (1987-02-01)
See also references of EP 2766569A4
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Claims: