Method and apparatus for downhole fluid analysis for...

Details Method and apparatus for downhole fluid analysis for... Method and apparatus for downhole fluid analysis for...

2007-05-22

2007-05-22

Raevis, Robert (Department: 2856)

Measuring and testing

Borehole or drilling

Formation logging

C073S152250

Reexamination Certificate

active

11082424

ABSTRACT:
A formation fluid sample is exposed to a rigidly-supported semi-permeable membrane such as silicone rubber to permit diffusion of gases and vapors from the formation fluid into a vacuum chamber, while at the same time, blocking the passage of any liquids. The membrane-transmitted gas is analyzed in the vacuum chamber by a residual gas analyzer. An ion pump or sorbent is associated with the evacuated chamber to maintain the vacuum. The ion pump or sorbent removes gases and vapors from the chamber that diffuse into the chamber from the reservoir sample that is on the opposite side of the semi-permeable membrane.

REFERENCES:
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patent: 4833915 (1989-05-01), Radd et al.
patent: 6167965 (2001-01-01), Bearden et al.
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patent: 6661000 (2003-12-01), Smith et al.
patent: 6670605 (2003-12-01), Storm et al.
patent: 6834536 (2004-12-01), Kempe
patent: 2003/0033866 (2003-02-01), Diakonov et al.
patent: 2004/0104341 (2004-06-01), Betancourt et al.

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