Method for optimizing the alignment of a horizontal borehole rel

Details Method for optimizing the alignment of a horizontal borehole rel Method for optimizing the alignment of a horizontal borehole rel

1994-11-15

1996-07-30

Williams, Hezron E.

Measuring and testing

Borehole or drilling

Downhole test

367 16, 367 55, 367 75, G01V 138, G01V 120

Patent

active

055400930

ABSTRACT:
As a means for determining the preferred azimuthal alignment of a horizontal borehole, the reflection travel time vectors between an acoustic source and a plurality of equidistant seismic receivers are measured along a plurality of directional wavefield trajectories. The travel time vectors are resolved to measure the angular orientation of the strike of vertical stress patterns. The alignment of the horizontal borehole is directed perpendicularly to strike.

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Thomsen, L., "Reflection Seismology Over Azimuthally Anisotropic Media," Geophysics, vol. 53, No. 3 (Mar. 1988), pp. 304-313.

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