库车与川东高陡复杂构造地震勘探的可比性  

Comparison of Seismic Exploration for Steep-Dipping Complex Structure in Kuqa Area with Eastern Sichuan Area

作　　者：梁顺军[1] 彭更新[2] 杨洪德 张敬洲[2] 崔永福[3] 向东[2] 

机构地区：[1]四川石油地调处物探研究中心,四川省成都市610213 [2]塔里木油田勘探开发研究院,新疆库尔勒市841000 [3]中国石油大学(北京)CNPC物探重点实验室,北京102249

出　　处：《中国石油勘探》2005年第5期20-27,共8页China Petroleum Exploration

摘　　要：库车和川东分别代表了西部(新、甘、青)和中部(川、渝、湘、鄂)的山地高陡复杂构造特征。对于地震勘探而言,虽两地区构造和石油地质特征有所差异,但都属于山地复杂高陡构造地震勘探类型。通过对比分析两地区的构造特征及褶皱变形机理、地震地质条件及反射特征,表明其勘探方法和经验具有相似性、可比性和互补性。对于落实构造圈闭而言,偏移处理和解释显得尤为重要:勿对地震剖面修饰性处理过强,要保真反射波的动力学和运动学特征;充分认识山地复杂构造畸变规律,做好叠加成像和偏移归位;处理解释一体化,有利于提高地震剖面信噪比和构造可靠性;做好精细地震解释,切忌模式化解释,为油气勘探提供可靠的圈闭形态和井位;应重视小型构造圈闭勘探,积极开展非背斜圈闭的油气藏研究;采用地震测井综合层速度量板法进行时深转换,有利于提高圈闭的可靠性。Kuqa and Eastern Sichuan area reflect the characteristics of complex structure on behalf of western China (Xinjiang, Gansu and Qinghai Provinces) and central China (Sichuan Province, Chongqing, Hunan and Hubei Provinces) in mountainous area. As for seismic exploration. there is difference in structure and oil geologic features, but they are the same types of complex steep structure of seismic exploration in mountainous area. There are similarity, comparability and mutual supplement and usage for reference in seismic exploration method and experience by contrasting the features of structure, mechanism of fold deformation, seismic geology condition and reflection characteristics in the two areas. Seismic exploration includes acquisition,processing and interpretation of seismic data .It is particularly important for finalizing structure trap by means of migration processing and interpretation of seismic data. You will find expression in below aspects: (1) Modified processing must not be over measure and keeping the reality of reflection wave in terms of dynamics and kinematics for seismic profile; (2) You must adequately acquaint distortion regularity of complex structure in mountainousarea and must do well in slack imagination and migration processing; (3) Integrating processing with interpretation is beneficial to improve SNR (Signal and Noise Ratio) and structure reliability; (4) Do well in fine interpretation . don't adopting pattern interpretation and aim at providing reliable trap shape and well plan for oil or gas exploration; (5) You should pay attention to small-sized structure trap exploration, and actively carry out the study of oil-gas reservoir in not-anticline area; (6) It is beneficial to improve trap reliability that you conduct time-depth conversion adopting the comprehensive velocity means from integrating seismic with logging.

关 键 词：库车 川东 山地构造 地震勘探 相似性 借鉴 

分 类 号：P631.4[天文地球—地质矿产勘探]