Gas hold up tool for use in cased well boreholes

Details Gas hold up tool for use in cased well boreholes Gas hold up tool for use in cased well boreholes

1992-02-26

1994-10-25

Fields, Carolyn E.

Radiant energy

Geological testing or irradiation

Well testing apparatus and methods

G01V 512

Patent

active

053591950

ABSTRACT:
A method and apparatus for determining the percentage of gas by volume in a well producing mixed phase fluids and flowing up the cased well. A low energy gamma ray source irradiates the flowing fluid and counts are measured by a detector crystal. A metal casing shields the surrounding formations from the gamma radiation so that the detector response is determined primarily by the mixed phase fluids flowing in the well. Calibration enables the determination of gas volume percentage for a specific diameter casing.

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Evans, "Three Phase Borehole Fluid Identification System", The Log Analyst, Mar.-Apr. 1979, p. 41.

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