Method and apparatus for gravity gradient logging

Details Method and apparatus for gravity gradient logging Method and apparatus for gravity gradient logging

G - Physics

01

V

73/28, 73/45, 73

G01V 7/00 (2006.01)

Patent

CA 1233661

ABSTRACT A gravimetry survey of an earth formation is conducted by continuously traversing said earth formation with a gravity logging tool 10 having a column of fluid within the tool 10. A first pressure difference along a first interval within said column of fluid is then measured by a first detector 13, and a second pressure difference along a second interval within said column of fluid is measured by a second detector 14. The difference between the output of the first and second detectors 13, 14 is then measured by a third detector 15 to produce an output representative of the gravity gradient along said earth formation between said first and second intervals.

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