Apparatus and method for formation testing while drilling with minimum system volume
AssigneeBaker Hughes Incorporated
InventorsStanley C. Jones, John M. Michaels, Jaedong Lee, Matthias Meister, Volker Krueger
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Abstract
A minimum volume apparatus and method is provided including a tool for obtaining at least one parameter of interest of a subterranean formation in-situ, the tool comprising a carrier member, a selectively extendable member mounted on the carrier for isolating a portion of annulus, a port exposable to formation fluid in the isolated annulus space, a piston integrally disposed within the extendable member for urging the fluid into the port, and a sensor operatively associated with the port for detecting at least one parameter of interest of the fluid.
Claims22
A tool for obtaining in situ a parameter of interest of a subterranean formation, the tool comprising:
- (a)a carrier member for conveying the tool into a borehole, the tool having a port associated with a sealing member for providing communication with fluid in the formation, the tool further including an internal test volume at the port for receiving formation fluid;
- (b) a device integrally disposed with the internal test volume, the device operating to draw formation fluid into the volume;
- and
- (c) a sensor operatively associated with the internal test volume for detecting a parameter of interest of the fluid, the fluid parameter of interest being indicative of the formation parameter of interest.
A method for obtaining a parameter of interest of a subterranean formation in-situ, the method comprising:
- (a) sealing a portion of a borehole wall;
- (b) exposing a port in a tool to the sealed portion;
- (c) drawing fluid into a tool internal test volume at the port using a device integrally disposed with the internal test volume;
- and
- (d) detecting a parameter of interest of the fluid in the internal test volume with a sensor, the fluid parameter of interest being indicative of the a formation parameter of interest.
Dependencies are inferred from the claim text.