Seismic surveying technique for the detection of azimuthal...

Details Seismic surveying technique for the detection of azimuthal... Seismic surveying technique for the detection of azimuthal...

G - Physics

01

V

349/20

G01V 1/24 (2006.01) G01V 1/28 (2006.01)

Patent

CA 1238709

ABSTRACT Polarized shear wave surveys are performed to determine azimuthal variations in the earth's subsurface caused by fracture orientation and density. The surveys may be done by using the same polarization (either horizontal or ver- tical) shear waves along two different seismic lines of profile, or by using different polarization shear waves along one common line of profile. The survey data are then processed and compared; any differences constitute a measure of fracture orientation and density. Subsurface zones of high fracture density, once identified, have been found to afford a higher likelihood of successful well completion. TDS: jde/mh 85165ART0286

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