Method and apparatus for determining density of earth formations
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United States of America Patent
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Mar 4, 1997
Issued Date -
N/A
app pub date -
Feb 12, 1996
filing date -
Sep 16, 1994
priority date (Note) -
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Abstract
Apparatus for determining the density of underground formations surrounding a borehole, such as a wireline logging tool or a logging-while-drilling tool, includes a high energy neutron source for irradiating the formations from within the borehole and a detector which detects gamma rays in the borehole resulting from the irradiation of the formations with high energy neutrons. The detected gamma rays are analyzed to determine the density of the formations.
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