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US 3,938,072 AGranted
Resonance earth structure logging
OwnerCharles Baird, William B. Pluminventors
Life of this patent
Estimating the term…
Abstract
A sonic generator sends a collimated acoustical wave into the section of earth under test and resonance conditions are established depending upon the nature and depth of discontinuities in the path of the acoustical wave. These resonance conditions are monitored by observing and recording electrical relationship in the power supply section of the sonic generator.
Claims4
Apparatus for resonance earth structure logging comprising:
- a. a constant frequency power supply,
- b. a transducer adapted to be driven by the output of the power supply, and
- c. means for presenting the electrical relationships of the output of said power supply as said transducer is operated at resonance while in contact with the earth, said electrical relationships versus time providing a representation of the subsurface structure of the earth.
A method for logging earth formations comprising:
- a. energizing a transducer in contact with the earth by means of a constant frequency power supply at the resonance frequency of the transducer,
- b. displaying the electrical relationships of said power supply vs. time;
- and
- c. determining from said relationships a representation of the structure of the earth.
1 more element
Dependencies are inferred from the claim text.