库车与川东高陡复杂构造地震勘探的可比性
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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.
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.
引文
[1] 贾承造,何登发,雷震宇,等. 前陆冲断带油气勘探[M].北京:石油工业出版社,2000
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[5] 钱荣均.复杂地表区偏移基准面问题研究[J]. 石油地球物理勘探,1996,31(1):39～54
[6] 梁顺军. 背斜顶部凸界面反射特征分析[J].石油物探,1999,38(3):58～66
[7] 梁顺军. 地震剖面上的断层分析及相关地质意义[J]. 石油地球物理勘探, 1999,34(5):560～568
[8] 范贵良. 山前高陡构造区地震成图法研究[J]. 石油物探,2000,39(3):16～252
[9] 梁顺军,彭更新,齐英敏,等.山地复杂构造地震成图方法探讨[J].石油物探,2003,42(4):529～537
[10] Suppe J . Geometry and Kinematics of fault-bend folding. American Journal of science, 1983, 283:684～721
[11] 刘光炎,蒋录全.平衡剖面技术与地震资料解释[J]. 石油地球物理勘探, 1995. 30(6):833～844
[12] 张明山,陈发景.平衡剖面技术应用的条件及实例分析[J].石油地球物理勘探, 1998,33(33):532～540
[13] 梁顺军. 平衡观点与地震观点的解释效果分析与评价[J].石油物探,2002,41(3):377～384
[2] 梁顺军,梁顺宾. 山地高陡构造地震资料采集分析、评价及建议[J]. 石油地球物理勘探, 2002,37(增刊):180～188
[3] 凌云.塔里木盆地山地地震勘探技术[J].中国石油勘探,2003,8(1):25～31
[4] 胡光灿,谢姚祥.中国四川东部高陡构造石炭系气田[M].北京:石油工业出版社,1977
[5] 钱荣均.复杂地表区偏移基准面问题研究[J]. 石油地球物理勘探,1996,31(1):39～54
[6] 梁顺军. 背斜顶部凸界面反射特征分析[J].石油物探,1999,38(3):58～66
[7] 梁顺军. 地震剖面上的断层分析及相关地质意义[J]. 石油地球物理勘探, 1999,34(5):560～568
[8] 范贵良. 山前高陡构造区地震成图法研究[J]. 石油物探,2000,39(3):16～252
[9] 梁顺军,彭更新,齐英敏,等.山地复杂构造地震成图方法探讨[J].石油物探,2003,42(4):529～537
[10] Suppe J . Geometry and Kinematics of fault-bend folding. American Journal of science, 1983, 283:684～721
[11] 刘光炎,蒋录全.平衡剖面技术与地震资料解释[J]. 石油地球物理勘探, 1995. 30(6):833～844
[12] 张明山,陈发景.平衡剖面技术应用的条件及实例分析[J].石油地球物理勘探, 1998,33(33):532～540
[13] 梁顺军. 平衡观点与地震观点的解释效果分析与评价[J].石油物探,2002,41(3):377～384
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