塔中隆起早古生代反转构造及其石油地质意义
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摘要
根据典型的地震剖面解释结果,探讨了塔中隆起早古生代反转构造样式发育特征,分析了反转构造发育的石油地质意义。结果表明,震旦纪—早、中奥陶世的裂陷作用产生的基底正断层对后期构造变形样式产生了重要的控制作用。由于先存基底正断裂的影响,塔中隆起发育两种不同类型的反转构造组合样式。当先存正断层倾角较大时,断层方位不利于进一步反转,此时反转扩展到毗邻断层,先期正断层可能为后期的逆冲断层提供应力集中点,如塔中Ⅱ号断裂带和塔中10号断裂带;也可能被后期的压性构造褶曲,如塔中Ⅰ号断裂带。反转构造发育早期有利于烃类聚集,后期还可以发育不同幅度的反转型背斜,为油气聚集提供有利的圈闭。
By using typical seismic interpretation results,this paper focuses on a discussion of the development characteristics of the Eopaleozoic inversion structures in the Tazhong uplift and an analysis of their petroleum geological significance.The basement normal faults that were developed during the Sinian to the Early-Middle Ordovician controlled the later structural deformation styles,resulting in two inversion structural styles in the Tazhong uplift.The azimuth of the pre-exiting fault with larger dip angle might not be favorable for its further inversion and forced the inversion to the adjacent faults.The early faults might then serve as stress concentration point for later thrust faults,such as the Tazhong-Ⅱ fault belt and the Tazhong-10 fault belt.Or,they might be buckled by later compressional structures,such as the Tazhong-Ⅰfault belt.It is suggested that an inversion structure contributes in its early stage to hydrocarbon accumulation and forms in its later stage inverted anticlines with different amplitudes that are favorable traps for hydrocarbon accumulation.
By using typical seismic interpretation results,this paper focuses on a discussion of the development characteristics of the Eopaleozoic inversion structures in the Tazhong uplift and an analysis of their petroleum geological significance.The basement normal faults that were developed during the Sinian to the Early-Middle Ordovician controlled the later structural deformation styles,resulting in two inversion structural styles in the Tazhong uplift.The azimuth of the pre-exiting fault with larger dip angle might not be favorable for its further inversion and forced the inversion to the adjacent faults.The early faults might then serve as stress concentration point for later thrust faults,such as the Tazhong-Ⅱ fault belt and the Tazhong-10 fault belt.Or,they might be buckled by later compressional structures,such as the Tazhong-Ⅰfault belt.It is suggested that an inversion structure contributes in its early stage to hydrocarbon accumulation and forms in its later stage inverted anticlines with different amplitudes that are favorable traps for hydrocarbon accumulation.
引文
1Roca D,Sans M,Koyi HA.Polyphase deformation of diapiric areas in models and in the eastern Prebetics(Spain)[J].AAPG Bulletin,2006,90(1):115-136
2Zanchi A,Berra F,Mattei M,et al.Inversion tectonics in central Alborz,Iran[J].Journal of Structural Geology,2006,28(11):2023-2037
3刘学锋,孟令奎.松辽盆地北部深层构造的平衡剖面研究[J].西安石油大学学报(自然科学版),2004,19(5):11～15
4汤良杰,金之均,张一伟,等.塔里木盆地北部隆起负反转构造[J].现代地质,1999,13(1):93～98
5Mitra S.Geometry and kinematic evolution of inversion structures[J].AAPG Bulletin,1993,77(7):1159-1191
6Turner J P,Williams G A.Sedimentary basin inversion and intra-plate shortening[J].Earth-Science Reviews,2004,65(3-4):277-304
7谢晓安,吴奇之,高岩,等.塔里木盆地压扭断裂带构造特征与油气聚集[J].石油学报,1997,18(2):13～17
8金晓辉,闫相宾,李铁军,等.塔里木盆地油气勘探实践与发现规律探讨[J].石油与天然气地质,2008,29(1):45～52
9翟光明,王建君.对塔中地区油气条件的认识[J].石油学报,1999,20(4):1～5
10徐国强,刘树根,李国蓉,等.塔中、塔北古隆起形成演化及油气地质条件对比[J].石油与天然气地质,2005,26(1):114～119
11邬光辉,李启明,张宝收,等.塔中Ⅰ号断裂坡折带构造特征及勘探领域[J].石油学报,2005,26(1):27～30
12张仲培,王毅,云金表,等.塔中地区断裂不同演化阶段对油气聚集的控制[J].石油与天然气地质,2009,30(3):316～323
13张振生,李明杰,刘社平.塔中低凸起的形成和演化[J].石油勘探与开发,2002,29(1):28～31
14吕修祥,胡轩.塔里木盆地塔中低凸起油气聚集与分布[J].石油与天然气地质,1997,18(4):288～293,308
15李明杰,郑孟林,冯朝荣,等.塔中低凸起的结构特征及其演化[J].西安石油学院学报(自然科学版),2004,19(4):43～45
16赵宗举,周新源,郑兴平,等.塔里木盆地主力烃源岩的诸多证据[J].石油学报,2005,26(3):10～15
2Zanchi A,Berra F,Mattei M,et al.Inversion tectonics in central Alborz,Iran[J].Journal of Structural Geology,2006,28(11):2023-2037
3刘学锋,孟令奎.松辽盆地北部深层构造的平衡剖面研究[J].西安石油大学学报(自然科学版),2004,19(5):11～15
4汤良杰,金之均,张一伟,等.塔里木盆地北部隆起负反转构造[J].现代地质,1999,13(1):93～98
5Mitra S.Geometry and kinematic evolution of inversion structures[J].AAPG Bulletin,1993,77(7):1159-1191
6Turner J P,Williams G A.Sedimentary basin inversion and intra-plate shortening[J].Earth-Science Reviews,2004,65(3-4):277-304
7谢晓安,吴奇之,高岩,等.塔里木盆地压扭断裂带构造特征与油气聚集[J].石油学报,1997,18(2):13～17
8金晓辉,闫相宾,李铁军,等.塔里木盆地油气勘探实践与发现规律探讨[J].石油与天然气地质,2008,29(1):45～52
9翟光明,王建君.对塔中地区油气条件的认识[J].石油学报,1999,20(4):1～5
10徐国强,刘树根,李国蓉,等.塔中、塔北古隆起形成演化及油气地质条件对比[J].石油与天然气地质,2005,26(1):114～119
11邬光辉,李启明,张宝收,等.塔中Ⅰ号断裂坡折带构造特征及勘探领域[J].石油学报,2005,26(1):27～30
12张仲培,王毅,云金表,等.塔中地区断裂不同演化阶段对油气聚集的控制[J].石油与天然气地质,2009,30(3):316～323
13张振生,李明杰,刘社平.塔中低凸起的形成和演化[J].石油勘探与开发,2002,29(1):28～31
14吕修祥,胡轩.塔里木盆地塔中低凸起油气聚集与分布[J].石油与天然气地质,1997,18(4):288～293,308
15李明杰,郑孟林,冯朝荣,等.塔中低凸起的结构特征及其演化[J].西安石油学院学报(自然科学版),2004,19(4):43～45
16赵宗举,周新源,郑兴平,等.塔里木盆地主力烃源岩的诸多证据[J].石油学报,2005,26(3):10～15
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