Use of raw amplitude and phase in propagation resistivity measur

Details Use of raw amplitude and phase in propagation resistivity measur Use of raw amplitude and phase in propagation resistivity measur

1996-07-03

1999-04-06

Snow, Walter E.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

With radiant energy or nonconductive-type transmitter

G01L 318, G01L 328

Patent

active

058923616

ABSTRACT:
A propagation resistivity measurement-while-drilling device is used to measure borehole environmental parameters along with electromagnetic properties of the formation. Multiple transmitter-receiver pairs operating at one or more transmitter frequencies are used to obtain a set of amplitude and phase measurements. A model of the response of the borehole instrument in varying formation and borehole conditions is also utilized. Formation and borehole parameters of interest are selected by the analyst. The measured amplitude and phase data set is then combined with the model of the tool response to obtain the selected parameters of interest.

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