Microwave electromagnetic borehole dipmeter

Details Microwave electromagnetic borehole dipmeter Microwave electromagnetic borehole dipmeter

1984-02-03

1986-04-08

Strecker, Gerard R.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

With radiant energy or nonconductive-type transmitter

324337, 343 5R, G01V 330

Patent

active

045815844

ABSTRACT:
A borehole logging tool includes three microwave antennas positioned from the longitudinal axis of the tool and spaced approximately equally around the axis. Microwave energy from a pulsed source is applied to the antennas during a plurality of microwave transmission periods. During a plurality of microwave reception periods, the amplitudes and the phases of the microwave energies received by the three antennas are measured for use in the determination of the dip of the formations surrounding the borehole.

REFERENCES:
patent: 2455941 (1948-12-01), Muskat et al.
patent: 2963641 (1960-12-01), Nanz
patent: 3388323 (1968-06-01), Stripling
patent: 3404396 (1968-10-01), Buehler et al.
patent: 3849721 (1974-11-01), Calvert
patent: 3944910 (1976-03-01), Rau
patent: 4107597 (1978-08-01), Meador et al.
patent: 4381544 (1983-04-01), Stamm
patent: 4383220 (1983-05-01), Baldwin
patent: 4511842 (1985-04-01), Moran et al.
"Electromagnetic Propagation . . . A New Dimension in Logging", Society of Petroleum Engineers of AIME, Paper No. SPE 6542, by T. J. Calvert and R. N. Rau, 1977.

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