Middle-period Static Correction Techniques Using 3D Spatially Fixed Spread Method
- 出版年：2010
- 作者：A.A.Zhukov；E.A.Osmolovskay；A.V.Burlakov
- 单位1：TNK-BP Management
- 语种：中文
- 作者关键词：seismic data；static correction；heterogeneity；time anomalies；geological structures
- 起始页：42
- 总页数：3
- 刊名：岩性油气藏
- 是否内版：否
- 刊频：专刊
- 创刊时间：1989
- 主管单位：中国石油天然气集团公司
- 主办单位：中国石油集团西北地质研究所；甘肃省石油学会
- 主编：刘全新
- 地址：甘肃省兰州市雁儿湾路535号
- 邮编：730020
- 电子信箱：yxyqc@petrochina.com.cn
- 卷：22
- 期：5
- 期刊索取号：P450.6 211
摘要
Method declared in this invention relates to processing of 2D and 3D seismic exploration data. More particularly， it relates to the family of static correction methods used for delineation and compensation of near-surface heterogeneities. Time anomalies， caused by such heterogeneities， are detected， analyzed and removed. If not removed，they mask useful information about true position of geological structures in time. Near surface anomalies are delineated via construction and interpretation of sets of surface-consistent time sections （2D） or cubes （3D）， which are resulted from stacking seismic traces with common receiver point （CRP） or common source point （CSP）. Combinations of partial-offset CRP and CSP stacks are used to discriminate between surface anomaly and depth structure. Special case of time sections is the one where spatially fixed patterns of sources and receivers are used. This case is primarily used for 3D. Analysis of stacked time sections or volumes and estimation of time shifts is performed interactively by using specially designed software system.