Geophone apparatus and a seismic exploration method

Patent · Tue Mar 14 04:00:00 EST 1989

OSTI ID:6120649

Erich, Jr, O G; Fillippone, W R

A seismic exploration method is described for concurrently obtaining both compressional and horizontal shear wave profiles of subterranean strata underlying the earth surface between a sourcepoint and a receiver location, which method comprises: (a) coupling to the earth at the receiver location a geophone apparatus having first and second geophones mounted on a common baseplate such that the axes of the geophones are inclined in opposite directions at an angle of about 45/sup 0/ from vertical; (b) transmitting a seismic signal having both compressional and horizontal shear wave components from the sourcepoint into the subterranean strata; (c) employing the geophone apparatus to sense the seismic energy returning from the subterranean strata; (d) summing the first and second output signals to form a raw trace; and (e) subtracting the first output signal from the second output signal to form a second raw trace upon which the horizontal shear wave components of the returning seismic energy are accentuated and the compressional wave components are attenuated.

• Assignee: Union Oil Co. of California, Los Angeles, CA
• Patent Number(s): US 4813029
• OSTI ID: 6120649
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
DESIGN
EXPLORATION
GEOLOGIC DEPOSITS
GEOPHYSICAL SURVEYS
MEASURING INSTRUMENTS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
RESOURCES
SEISMIC ARRAYS
SEISMIC DETECTORS
SEISMIC SURVEYS
SEISMIC WAVES
SURVEYS