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Some effects of residual static correction anomalies on stack result and its relationship with acquisition parameters and reflection characteristic (PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2004年第04期
Page:
75-80
Research Field:
Publishing date:

Info

Title:
Some effects of residual static correction anomalies on stack result and its relationship with acquisition parameters and reflection characteristic
Author(s):
LI Gui-hua; ZHU Guang-ming; ZHANG Wen-bo
School of Geological Engineering and Surveying Engineering , Chang'an University Xi'an 710054 , China
Keywords:
residual anomaly ; P and PS wave stack ; relationship; acquisition parameter design
PACS:
P315.63;P315.61
DOI:
-
Abstract:
This paper analyses fundamental hypo theses and model for influence of residual static cor rection on stack result based o n basic principle of seismic survey , deduces the rela tionship formulae between the influence of residual anomalies size and length)o n stack result and the spread leng th, the dominant signal frequency , reflected event time , and develops corresponding software . These analyses indicate that the influence o n high frequency of seismic sig nal are enormous, the energy attenuation aroused by residual anomalies are independent of depth, w hile phase detention varies with depth , owning to muting , long wave-leng th anomalies bring the aberration to shallow events config uration , and short wave-length anomalies lend to deep events energy attenuation , the sizes of residual anomalies of PS wave are bigger than ones of P wave and change acutely , PS residual anomaly is a function of V p/ V s interface depth and shot-receive distance .The relationship of these parameters can pro vide an evidence for optimal acquisitio n parameter devising and processing .

References:

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Last Update: 2004-12-20