Reflection seismology in azimuthally anisotropic media

Conference · Fri May 01 00:00:00 EDT 1987 · AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States)

OSTI ID:5771609

Thomsen, L

Many recent papers have suggested that crustal rocks may be azimuthally anisotropic to some degree. Such anisotropy is usually attributed to joints, fractures, or microcracks aligned by a horizontal minimum stress to lie vertically and with a preferred azimuth. In this talk, the author presents a heuristic discussion of the effects of such anisotropy on seismic reflection data (both in traveltime anomalies and in reflection amplitude anomalies). New mathematical results, based on a model of transverse isotropy with symmetry axis horizontal, verify the heuristic discussion. In addition, mathematical results for moveout velocity, as compared with vertical velocity, show the moveout to be abnormal and, in part, counterintuitive.

• Research Organization: Amoco Production Co., Tulsa, OK
• OSTI ID: 5771609
• Report Number(s): CONF-870606-
• Journal Information: AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States), Journal Name: AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States) Vol. 71:5; ISSN AABUD
• Country of Publication: United States
• Language: English

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