ASTM D7400-17
- Standard Test Methods for Downhole Seismic Testing
- standard by ASTM International, 11/01/2017
- Category: ASTM
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1.1 These test methods are limited to the determination of the interval velocities from arrival times and relative arrival times of compression (P) waves and vertically (SV) and horizontally (SH) oriented shear (S) seismic waves which are generated near surface and travel down to an array of vertically installed seismic sensors. Two methods are discussed, which include using either one or two downhole sensors (receivers).
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