Gas hold up tool for use in cased well boreholes
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United States of America Patent
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Oct 25, 1994
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N/A
app pub date -
Feb 26, 1992
filing date -
Feb 26, 1992
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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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