Post-stack steep dip enhancement aids search around salt structures

Journal Article · Mon Apr 18 04:00:00 EDT 1994 · Oil and Gas Journal; (United States)

OSTI ID:5111263

Ratcliff, D W ^[1]; Pan, N ^[2]

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1. Amoco Production Co., Houston, TX (United States)
2. PGS Tensor Geophysical Inc., Houston, TX (United States)

Recent interest in drilling targets near and beneath subsurface salt bodies has challenged geophysicists to improve imaging of steeply dipping reflectors of seismic energy. An important new imaging technology is post-stack steep dip enhancement (SDE). It is an interpretive tool that has obvious application along the flanks of salt. And it applies to other structures with steeply dipping horizons, such as faults. In effect, SDE compensates for a bias in unmigrated seismic data toward reflections from flat or gently dipping features. Reflections from steeply dipping horizons are commonly weakened by a number of phenomena during acquisition and processing. These include common depth point (CDP) smear, velocity dependence on dip, receiver arrays, stacking, and filtering. This paper describes seismic data processing sequence using the SDE method.

• OSTI ID: 5111263
• Journal Information: Oil and Gas Journal; (United States), Journal Name: Oil and Gas Journal; (United States) Vol. 92:16; ISSN OIGJAV; ISSN 0030-1388
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
DETECTION
GEOLOGIC DEPOSITS
GEOLOGIC STRATA
GEOLOGIC STRUCTURES
GEOPHYSICAL SURVEYS
IMAGE PROCESSING
IMAGES
INCLINED STRATA
PROCESSING
SALT DEPOSITS
SEISMIC DETECTION
SEISMIC SURVEYS
SURVEYS
THREE-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL CALCULATIONS