Electricity: measuring and testing – Of geophysical surface or subsurface in situ – With radiant energy or nonconductive-type transmitter
Patent
1979-12-31
1982-11-23
Strecker, Gerard R.
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
With radiant energy or nonconductive-type transmitter
324343, G01V 328
Patent
active
043607772
ABSTRACT:
Apparatus and method are disclosed for determining properties of subsurface formations surrounding a borehole by induction logging. The properties which can be determined include the formation dip angle and dip azimuth angle. Indications of formation anisotropy can also be obtained. An array of individually energizable transmitter coils is provided, preferably including three coils having mutually orthogonal axes. Electronic transmitter steering circuitry is provided for controlling the energizing means to electronically steer the direction of the magnetic moment resulting from the magnetic field components generated by the transmitter coils. An array of receiver coils is also provided along with receiver processing circuitry for processing signals induced in the receiver coils. The array of receiver coils preferably includes three receiver coils having mutually orthogonal axes. The receiver processing circuitry is capable of individually sensing the signals induced in the receiver coils and operates to combine the sensed signals. The receiver processing circuitry also includes electronic receiver steering circuitry for controlling the relative amplification of the sensed signals to steer the effective sensing direction of the receiver. The receiver steering circuitry is coordinated with the transmitter steering circuitry and is operative to rotate the effective sensing direction of the receiver in a plane perpendicular to the direction of the transmitter magnetic moment.
REFERENCES:
patent: 2623924 (1952-12-01), Cartier et al.
patent: 2794949 (1957-06-01), Hedstrom et al.
patent: 2919397 (1959-12-01), Morley
patent: 2955250 (1960-10-01), Shaw et al.
patent: 3014177 (1961-12-01), Hungerford et al.
patent: 3187252 (1965-06-01), Hungerford
patent: 3510757 (1970-05-01), Huston
patent: 3561007 (1971-02-01), Gouilloud et al.
patent: 3609521 (1971-09-01), Des Brandes
patent: 3808520 (1974-04-01), Runge
Novack Martin
Schlumberger Technology Corporation
Strecker Gerard R.
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