Patent ID: 6478096
Filing Date: 2002-11-12
Classification: E21B

Abstract:
A tool for obtaining at least one parameter of interest of a subterranean formation in-situ, the tool comprising:(a) a carrier member for conveying the tool into a borehole, the borehole and tool having an annulus extending between a tool exterior and a wall of the borehole; (b) a selectively extendable pad member mounted on the carrier member for isolating a portion of the annulus; (c) a first piston for extending and retracting the pad member; (d) a port exposable to a fluid containing formation fluid in the isolated annulus portion; (e) a second piston integrally disposed within the first piston for urging the fluid into the port; and (f) a sensor operatively associated with the port for detecting at least one parameter of interest of the fluid, the at least one fluid parameter of interest indicative of the at least one formation parameter of interest.