Method of determining invaded formation properties including res

Details Method of determining invaded formation properties including res Method of determining invaded formation properties including res

1989-07-21

1993-02-16

Envall, Jr., Roy N.

Boots, shoes, and leggings

324339, 324341, G01V 318, G01V 338

Patent

active

051876612

ABSTRACT:
An apparatus and method for induction logging is disclosed. By transmitting a sequence of pulses at many frequencies, the formation invaded zone diameter can be distinguished as a result of changes in resistivity. As higher frequencies are swept, dielectric constant varies with frequency and this variation is evident in chart form. An apparatus for controlled antenna field formation is also disclosed.

REFERENCES:
patent: 4360778 (1982-11-01), Freedman
patent: 4654598 (1987-03-01), Arulanandan et al.
patent: 4730161 (1988-03-01), Cox et al.
patent: 4849699 (1989-07-01), Gill et al.

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