Measuring and testing – Borehole or drilling – Formation logging
Patent
1997-02-05
1998-01-13
Biegel, Ronald L.
Measuring and testing
Borehole or drilling
Formation logging
7315242, 7386104, 2502694, G01V 500
Patent
active
057082030
ABSTRACT:
A neutron logging tool is used to obtain information about fluids within a wellbore. The well is shut in and a neutron log count rate (M.sub.gas) is obtained in a portion of the wellbore containing primarily gaseous fluid and a neutron log count rate (M.sub.liquid) is obtained in a portion of the wellbore containing primarily liquid fluid. Then fluid flow is reestablished in the well and a neutron log count rate (M.sub.mix) is obtained over a logging interval of interest. Previously obtained calibration data relates (M.sub.gas), (M.sub.liquid), and (M.sub.mix) to relative quantities of gaseous fluid and liquid fluid within the wellbore.
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Lamb Walter J.
McKinley Richard M.
Biegel Ronald L.
Exxon Production Research Company
Lyles Marcy M.
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