深层火山岩油气藏高精度三维地震采集观测系统设计  

High-precision 3D seismic acquisition geometry design for deep volcanic reservoir

作　　者：王延光[1] 刘国章 梁鸿贤[2] 石林光[2] 魏伟[3,4] 孙伟家 WANG Yan-Guang;LIU Guo-Zhang;LIANG Hong-Xian;SHI Lin-Guang;WEI Wei;SUN Wei-jia(Shengli Oilfield Branch Co.,Sinopec,Shandong Dongying,257000,China;Geophysical Research Institute of Shengli Oilfield Branch Co.,Shandong Dongying,257022,China;Key Laboratory of Shale Gas and Geoengineering,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;University of Chinese Academy of Sciences,Beijing 100049,China;Key Laboratory of Earth and Planetary Physics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China)

机构地区：[1]胜利油田分公司,山东东营257000 [2]胜利油田分公司物探研究院,山东东营257022 [3]中国科学院地质与地球物理研究所,中国科学院页岩气与地质工程重点实验室,北京100029 [4]中国科学院大学,北京100049 [5]中国科学院地质与地球物理研究所,中国科学院地球与行星物理重点实验室,北京100029

出　　处：《油气地球物理》2020年第1期43-48,共6页Petroleum Geophysics

基　　金：国家科技重大专项课题“地震与井筒精细勘探关键技术”（2016ZX05006-002）资助

摘　　要：针对火山岩地区的地震地质条件,基于地震波场数值模拟、照明分析、聚焦分辨率分析等技术,重新设计了某火山岩凹陷地区的三维地震采集方案,在当前采集成本要求下,大幅度改善地震资料品质。与以往地震采集资料相比,新采集地震资料剖面断裂位置成像清晰,目的层及其以上各反射层特征清晰可靠,分辨率和信噪比均有明显提升,达到高精度三维地震采集的目的。Based on the seismic geological conditions in developed volcanic area,a 3D seismic acquisition geome-try for a volcanic sag area is redesigned by using the seismic wavefield numerical simulation,illumination analysis and focal beams analysis.The quality of seismic data is greatly improved under the current acquisition cost require-ments.Compared with the previous seismic data,the position of the fault on the seismic sections based on the new acquisition scheme is more clear,the characteristics of the target layer and above the reflective layer are clear and reliable,and the resolution and signal-to-noise ratio are obviously improved,the purpose of high-precision 3D seis-mic acquisition is achieved.

关 键 词：深层火山岩 观测系统 数值模型 照明分析 采集脚印 聚焦分辨 

分 类 号：P31[天文地球—固体地球物理学]