Combination radio frequency dielectric and conventional inductio

Details Combination radio frequency dielectric and conventional inductio Combination radio frequency dielectric and conventional inductio

1974-12-11

1976-09-21

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01V 310, G01V 318

Patent

active

039821765

ABSTRACT:
A well logging system is provided which simultaneously employs a conventional deep induction log and a radio frequency dielectric log to differentiate similar high resistivity fresh water and oil prospective zones. A 16 megahertz radio frequency dielectric induction logging system which is responsive to both conductivity and permittivity of the earth derives a signal primarily related to both of these properties. A conventional 20 kilohertz deep induction system is used to derive a signal which is primarily a function of conductivity alone. When combined in accordance with predetermined relationships according to the invention the two measurements can be used to find oil prospective zones.

REFERENCES:
patent: 2139460 (1938-12-01), Potapenko
patent: 3166708 (1965-01-01), Millican
patent: 3180141 (1965-04-01), Alger
patent: 3259837 (1966-07-01), Oshry
patent: 3329889 (1967-07-01), Tanguy
patent: 3551797 (1970-12-01), Gouilloud et al.
patent: 3609518 (1971-09-01), Baker
patent: 3849721 (1974-11-01), Calvert
Daev, D. S., Dielectric Induction Logging, Izv. Vyssh. Ucheb. Zaved., Geol. Razved. 8, No. 11, 110-119 (1965), translation pp. 1-10.

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