Prediction of depth and velocity on VSP data

Journal Article · Tue Mar 01 04:00:00 EST 1983 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:6393855

Stone, D G

The Vertical Seismic Profile (VSP) method can often be used to assist in making drilling decisions. These decisions may involve anticipation of overpressured zones, distance to the seismically determined target, and verification of geologic or geophysical interpretation. A VSP is recorded with a seismic source on the surface and receivers in the borehole. Both up and downgoing waves are recorded and are separable. Layers beneath the borehole are recorded in the upgoing waves at every receiver position. This redundancy can be exploited to achieve a high signal-to-noise ratio and good quality time-amplitude information. The conversion of amplitude to acoustic impedance gives time and interval velocity with density held constant. Depth is then a function of time and interval velocity. A VSP has several advantages over

• Research Organization: Seismograph Service Corp., Tulsa, OK
• OSTI ID: 6393855
• Journal Information: Am. Assoc. Pet. Geol., Bull.; (United States), Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Vol. 67:3; ISSN AAPGB
• Country of Publication: United States
• Language: English

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