Method and apparatus for determining the nature of...

Details Method and apparatus for determining the nature of... Method and apparatus for determining the nature of...

2006-05-02

2006-05-02

Ledynh, Bot (Department: 2862)

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

With radiant energy or nonconductive-type transmitter

C324S337000

Reexamination Certificate

active

07038456

ABSTRACT:
A system for detecting or determining the nature of a subterranean reservoir. An electromagnetic field is applied using a dipole antenna transmitter and this is detected using a dipole antenna receiver. The measurements are taken with the antenna both in-line and parallel and the difference between the two sets of measurements is exploited. A characteristic difference indicates a high resistive layer, which corresponds to a hydrocarbon reservoir.

REFERENCES:
patent: 2077707 (1937-04-01), Melton
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patent: 4258321 (1981-03-01), Neale, Jr.
patent: 4492924 (1985-01-01), Nilsson
patent: 4617518 (1986-10-01), Srnka
patent: 5400030 (1995-03-01), Duren
patent: 6859038 (2005-02-01), Ellingsrud et al.
patent: 00/54075 (2000-09-01), None
patent: 01/57555 (2001-08-01), None
Search Report—PCT/GB01/03473.
Preliminary Examination Report—PCT/GB01/03473.

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