Tuned borehole gravity gradiometer

Details Tuned borehole gravity gradiometer Tuned borehole gravity gradiometer

1984-12-20

1986-04-15

Levy, Stewart J.

Measuring and testing

Gravitational determination

G01M 112

Patent

active

045819327

ABSTRACT:
A tuned borehole gravity gradiometer comprises a dipole mass system having means for selectively tuning the sensitivity of the gravity gradiometer to detect variations in the earth's gravity gradient within a borehole. The tuning means includes varying the metacentric height of the dipole mass system by selectively varying the center of gravity of the dipole mass system with respect to the metacenter of the dipole mass system.

REFERENCES:
patent: 2089164 (1937-08-01), Imhof
Brown and Lautzenhiser, "The Effect of Dipping Beds on a Borehole Gravimeter Survey", Jan. 1982, Geophysics, v. 47, No. 1, pp. 25-30.

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