石油物探2012，Vol.51Issue(2)：164-171,8.DOI:10.3969/j.issn.1000-1441.2012.02.009
复杂山前带有偏VSP数据处理方法研究
张山 1白俊辉 2李彦鹏 2吴超 3李青3
作者信息
- 1. 中国地质大学(武汉),湖北武汉430074
- 2. 中国石油天然气集团公司东方地球物理勘探有限责任公司,河北涿州072751
- 3. 中国石油天然气股份有限公司塔里木油田分公司,新疆库尔勒841000
- 折叠
摘要
Abstract
Complex piedmont is characterized by rugged surface, large-dip overthrust nappe structure,complex fault relations,etc. Traditional offset VSP data processing method cannot solve the imaging problem for the structures in complex piedmont. Therefore, some new ideas and method were proposed aiming at several key steps for VSP data processing,such as wavefield separation,imaging methodand velocity modeling. For wavefield separation, we combined F-K filtering and point-by-point polarization filtering to realize complex wavefield separation. In order to solve the static correction problem, the VSP imaging strategy was changed from traditional time-domain imaging into depth-domain imaging, then datum correction was carried out uniformly after imaging, which can remove the closure difference among the imaging sections obtained from trandi-tional multi-azimuth offset VSP processing. Meanwhile, Kirchhoff depth-domain integral imaging method was utilized. In terms of the characteristics of VSP observation, zero-off set VSP and offset VSP fist arrival were adopted to calculate the observation time, which is the key parameter in integral imaging. The method was applied to the VSP data processing in two adjacent wells at the complex piedmont in Kuche area,and the result is well coinciding with the drilling data.关键词
山前带/VSP/波场分离/静校正/VSP成像Key words
piedmont/VSP/wave field separation/static correction/VSP imaging分类
天文与地球科学引用本文复制引用
张山,白俊辉,李彦鹏,吴超,李青..复杂山前带有偏VSP数据处理方法研究[J].石油物探,2012,51(2):164-171,8.
