准噶尔盆地西北缘下盘掩伏构造油气勘探新领域
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摘要
准噶尔盆地西北缘冲断构造自西向东由北部单斜带、中部向斜带、克—乌断裂带和前缘斜坡带4个部分组成,在纵向又可划分为上、下两个构造层,上构造层的冲断序列要先于下构造层。现今保存下来的冲断构造应始于三叠纪末期形成,并在侏罗纪继承性活动,白垩纪之后冲断活动基本停止。西北缘冲断带下构造层内的背斜圈闭和"帽檐"式圈闭是油气勘探前景很大的新领域,尤其是大侏罗沟横向断裂与克—乌断裂带夹持的三角区域,"帽檐"圈闭埋藏适中,是一个有利的勘探目标。应在获得必要的深部地质资料和速度资料后,再针对保存完整、面积和幅度均较大的下盘掩伏背斜开展地震处理攻关与解释成图。
The fold-and-thrust structure in the northwestern margin of the Junggar Basin is composed of the northern monocline belt,the middle syncline belt,the Ke-Wu faulted belt and the frontal slope belt,and is divided into the upper and lower structural layers in vertical.The upper structural layer preceded the lower one in terms of thrust sequence.Inferred from the restoration of unconformities,the motion of thrust faults started in late Triassic,activated in succession in Jurassic,and stopped in Cretaceous.The footwall venture exploration should aim at "cap brim" traps,especially in the triangular region,where the Dazhuluogou tear fault and the Ke-Wu thrust belt intersect and the exploration horizon imbeds moderately,and then aim at the deep anticlinal traps in duplex structures when obtaining the essential data of deep geology and velocity data.
The fold-and-thrust structure in the northwestern margin of the Junggar Basin is composed of the northern monocline belt,the middle syncline belt,the Ke-Wu faulted belt and the frontal slope belt,and is divided into the upper and lower structural layers in vertical.The upper structural layer preceded the lower one in terms of thrust sequence.Inferred from the restoration of unconformities,the motion of thrust faults started in late Triassic,activated in succession in Jurassic,and stopped in Cretaceous.The footwall venture exploration should aim at "cap brim" traps,especially in the triangular region,where the Dazhuluogou tear fault and the Ke-Wu thrust belt intersect and the exploration horizon imbeds moderately,and then aim at the deep anticlinal traps in duplex structures when obtaining the essential data of deep geology and velocity data.
引文
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[5]卢华复,陈楚铭,刘志宏,等.库车再生前陆逆冲带的构造特征与成因[J].石油学报,2005,21(3):18-24.
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[13]贾承造.中国中西部前陆冲断带构造特征与天然气富集规律[J].石油勘探与开发,2005,32(4):9-15.
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[15]张颖.三维地震叠前时间偏移处理技术应用与展望[J].石油勘探与开发,2006,33(5):536-541.
[16]Suppe J.Geometry and kinematics of fault-bend folding[J].American Journal of Science,1983,283:684-721.
[17]Suppe J,Medwedeff D.Geometry and kinematics of fault-propagation folding[J].Eclogae Geologicae Helvetiae,1990,83(3):409-454.
[18]Shaw J H,Hook S C,Suppe J.Structural trend analysis by axialsurface mapping[J].AAPG Bulletin,1994,78(5):700-721.
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[20]Shaw J H,Bilotte F,Brennan P A.Patterns of imbricatethrusting[J].Geological Society of America Bulletin,1999,111(7):1140-1154.
[21]Shaw J H,Connors C,Suppe J.Seismic interpretation ofcontractional fault-related folds:An AAPG seismic atlas[M].Tulsa:AAPG,2004.1-270.
[22]Medwedeff D A,Suppe J.Multibend fault-bend folding[J].Journal of Structural Geology,1997,19(3-4):279-292.
[23]何登发,管树巍,张年富,等.准噶尔盆地哈拉阿拉特山冲断带构造及找油意义[J].新疆石油地质,2006,27(3):267-269.
[24]Woodward N B,Boyer S E,Suppe J.An outline of balancedcross-sections(2nd ed.)[M].Knoxville:University ofTennessee,1985.1-170.
[25]何登发.不整合面的结构与油气聚集[J].石油勘探与开发,2007,34(2):142-149,201.
[26]杨勇,查明.准噶尔盆地乌尔禾—夏子街地区不整合发育特征及其在油气成藏中的作用[J].石油勘探与开发,2007,34(3):304-309.
[27]赵文智,胡素云,董大忠,等.“十五”期间中国油气勘探进展及未来重点勘探领域[J].石油勘探与开发,2007,34(5):513-520.
[2]汪新,贾承造,杨树锋.南天山库车褶皱带构造几何学和运动学[J].地质科学,2002,37(3):372-384.
[3]管树巍,陈宁华,徐峰,等.库车地区秋里塔格褶皱带几何学和运动学特征与油气圈闭[J].石油学报,2003,24(5):30-34.
[4]管树巍,汪新,杨树锋,等.位移转换的两种概念模型与实例[J].中国科学(D辑),2004,34(9):807-817.
[5]卢华复,陈楚铭,刘志宏,等.库车再生前陆逆冲带的构造特征与成因[J].石油学报,2005,21(3):18-24.
[6]Bally A W,Gordy P L,Stewart G A.Structure seismic data andorogenic evolution of southern Canadian Rocky Mountain[J].Bulletin of Canadian Petroleum Geology,1966,14(3):337-381.
[7]Stockmal G S,Mackay P A,Lawton D C,et al.The OldmanRiver triangle zone:a complicated tectonic wedge delineated bynew structural mapping and seismic interpretation[J].Bulletin ofCanadian Petroleum Geology,1996,44(2):202-214.
[8]Dahlstrom C D A.Balanced cross sections[J].Canadian Journalof Earth Sciences,1969,6(4):743-757.
[9]Price R A.The southeastern Canadian Cordillera:thrustfaulting,tectonic wedging,and delamination of the lithosphere[J].Journal of Structural Geology,1986,8:1584-1596.
[10]贾承造,何登发,雷振宇,等.前陆冲断带油气勘探[M].北京:石油工业出版社,2000.
[11]何登发,贾承造.冲断构造与油气聚集[J].石油勘探与开发,2005,32(2):55-62.
[12]何登发,杨庚,管树巍,等.前陆盆地构造建模的原理与基本方法[J].石油勘探与开发,2005,32(3):7-14.
[13]贾承造.中国中西部前陆冲断带构造特征与天然气富集规律[J].石油勘探与开发,2005,32(4):9-15.
[14]张研,徐凌,陈立康.前陆冲断带复杂构造地震成像技术对策[J].石油勘探与开发,2005,32(5):62-64.
[15]张颖.三维地震叠前时间偏移处理技术应用与展望[J].石油勘探与开发,2006,33(5):536-541.
[16]Suppe J.Geometry and kinematics of fault-bend folding[J].American Journal of Science,1983,283:684-721.
[17]Suppe J,Medwedeff D.Geometry and kinematics of fault-propagation folding[J].Eclogae Geologicae Helvetiae,1990,83(3):409-454.
[18]Shaw J H,Hook S C,Suppe J.Structural trend analysis by axialsurface mapping[J].AAPG Bulletin,1994,78(5):700-721.
[19]Shaw J H,Suppe J.Earthquake hazards of active blind-thrustfaults under the central Los Angeles basin,California[J].Journalof Geophysical Research,1996,101:8623-8642.
[20]Shaw J H,Bilotte F,Brennan P A.Patterns of imbricatethrusting[J].Geological Society of America Bulletin,1999,111(7):1140-1154.
[21]Shaw J H,Connors C,Suppe J.Seismic interpretation ofcontractional fault-related folds:An AAPG seismic atlas[M].Tulsa:AAPG,2004.1-270.
[22]Medwedeff D A,Suppe J.Multibend fault-bend folding[J].Journal of Structural Geology,1997,19(3-4):279-292.
[23]何登发,管树巍,张年富,等.准噶尔盆地哈拉阿拉特山冲断带构造及找油意义[J].新疆石油地质,2006,27(3):267-269.
[24]Woodward N B,Boyer S E,Suppe J.An outline of balancedcross-sections(2nd ed.)[M].Knoxville:University ofTennessee,1985.1-170.
[25]何登发.不整合面的结构与油气聚集[J].石油勘探与开发,2007,34(2):142-149,201.
[26]杨勇,查明.准噶尔盆地乌尔禾—夏子街地区不整合发育特征及其在油气成藏中的作用[J].石油勘探与开发,2007,34(3):304-309.
[27]赵文智,胡素云,董大忠,等.“十五”期间中国油气勘探进展及未来重点勘探领域[J].石油勘探与开发,2007,34(5):513-520.
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