摘要
准噶尔盆地腹部目的层侏罗系为砂泥互层,各向异性条件成熟,井震标定时发生时深关系“异常”,一定程度上对地质勘探研究产生不利影响。首次在该区开展了各向异性叠前深度偏移,通过时间域基于微测井静校正精度分析评价,结合深度域井震各向异性叠前深度偏移时深关系分析,认为井震结合各向异性叠前深度偏移可有效提高该区成像精度。实际资料证明该区出现井震时深关系“异常”的合理性,为后续地质勘探研究工作提供了资料分析依据。
The subsurface structure in the center area of Junggar basin is horizontal,the Geological exploration study mainly depond on PSTM seismic data.But subsurface lithology is very varied,which means the rock is anisotropic,and the Time-Depth relationship is very unuaual,it’s not good for geological exploration study.For this,we carried out TTI PSDM for the first time in this area.By analyzing the precision of statics based micro-logging data in time domain,combined with the analysis result of Time-Depth relationship based TTI PSDM data,we evidenced the reasonability of the unuaual,and it will be helpful to the gelolgical exploration study in future in this area.
作者
窦强峰
马国财
杨晓海
刘宜文
Dou Qiangfeng;Ma Goucai;Yang Xiaohai;Liu Yiwen(Geological Branch,Exploration and Production Research Institute,Xinjiang Oilfield Ltd.,PetroChina,Urumqi,Xinjiang,830000,China;No.1 Oil Production Plant,Xinjiang Oilfield Company,PetroChina,Urumqi,Xinjiang,834000,China)
出处
《新疆地质》
CAS
CSCD
北大核心
2020年第4期504-507,共4页
Xinjiang Geology
