准噶尔盆地复杂山地区分方位地震处理关键技术及应用  

Key Technology and Application of Azimuthal Seismic Processing inComplex Mountain Area of the Junggar Basin

作　　者：王晨[1] 罗勇[1] 冷雪梅 张欣吉 郭琪 彭玉林 Wang Chen;Luo Yong;Leng Xuemei;Zhang Xinji;Guo Qi;Peng Yulin(Geophysical Research Center,Research Institute of Exploration and Development,Xinjiang Oilfield Company,PetroChina,Urumqi,Xinjiang 830013,China)

机构地区：[1]中国石油新疆油田分公司勘探开发研究院地球物理研究所,新疆乌鲁木齐830011

出　　处：《新疆地质》2024年第1期133-138,共6页Xinjiang Geology

摘　　要：准噶尔盆地南缘山前冲断带是我国西部重要的油气勘探领域,构造复杂,逆冲断裂发育特征为油气勘探带来巨大挑战。随“两宽一高”资料的普及,全方位处理模式愈发难以满足深层精细勘探的需求。本文以安集海背斜为例,对下组合方位各向异性问题,提出一套完整的分方位处理流程,包括分方位速度分析、分方位全局寻优剩余静校正、OVT域叠前时间偏移及加权叠加技术。这些技术的应用有效地改善了该地区断点断裂不清晰和构造样式存在多解性的问题,具一定生产推广价值。The piedmont thrust belt in the southern margin of the Junggar Basin has long been an important oil and gas exploration area in western China.However,its complex structure and the characteristics of thrust fault development also bring great challenges to oil and gas exploration.Especially with the popularization of“two width and one height”data,the omni-directional processing mode is increasingly difficult to meet the needs of deep fine exploration.Therefore,taking the Anjihai anticline as an example,this paper proposes a complete set of azimuth processing flow to solve the problem of combined azimuth anisotropy under it.It includes azimuthal velocity analysis,azimuthal global optimization residual static correction,OVT domain prestack time migration and weighted stacking technology.The application of these technologies has effectively improved the problems of unclear breakpoint faults and multi-solution of structural styles in this area,and has certain production and popularization value.

关 键 词：方位各向异性 分方位处理 OVT域偏移 全局寻优剩余静校正 复杂山地 

分 类 号：P631.4[天文地球—地质矿产勘探]