Electronic Resource
Oxford, U.K. and Cambridge, USA
:
Blackwell Science Ltd
Geophysical prospecting
45 (1997), S. 0
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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