Method and apparatus for determining a downhole fluid sample...

Details Method and apparatus for determining a downhole fluid sample... Method and apparatus for determining a downhole fluid sample...

2007-01-02

2007-01-02

Raevis, Robert (Department: 2856)

Measuring and testing

Sampler, sample handling, etc.

Capture device

C073S152260

Reexamination Certificate

active

11023335

ABSTRACT:
A formation test tool10for obtaining a downhole fluid sample from a formation of interest30and returning the sample to the surface of a well includes a cylinder12forming a fluid sample chamber therein, and a piston20sealingly movable within the cylinder and separating the fluid sample from a cushioning fluid. A fluid line24connects the formation of interest to the fluid sample chamber, and a valve26controls fluid flow along the fluid line. In one embodiment, a magnet76supported on the piston outputs signals indicative of the position of the piston and thus the volume of the fluid sample within the cylinder. A meter74is movable along the exterior of the cylinder12for determining the position of the magnet within the cylinder, such that the volume of sampled fluid in the cylinder can be determined at the surface.

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patent: 4936139 (1990-06-01), Zimmerman et al.
patent: 5620052 (1997-04-01), Turner

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