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FRACTURE CHARACTERIZATION FROM NEAR-OFFSET VSP INVERSION (1997)

Horne, Steve ; MacBeth, Colin ; Queen, J. ; [et al.]

Oxford, U.K. and Cambridge, USA : Blackwell Science Ltd

Geophysical prospecting 45 (1997), S. 0

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ISSN: 1365-2478

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Geosciences , Physics

Notes: A global optimization method incorporating a ray-tracing scheme is used to invert observations of shear-wave splitting from two near-offset VSPs recorded at the Conoco Borehole Test Facility, Kay County, Oklahoma. Inversion results suggest that the seismic anisotropy is due to a non-vertical fracture system. This interpretation is constrained by the VSP acquisition geometry for which two sources are employed along near diametrically opposite azimuths about the well heads. A correlation is noted between the time-delay variations between the fast and slow split shear waves and the sandstone formations.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1046/j.1365-2478.1997.3170237.x

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