塔中Ⅰ号坡折带断裂系统空间展布及演化规律
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摘要
利用相干数据体分析方法,结合可视化研究手段,对塔中Ⅰ号坡折带断裂系统的走向、空间展布特征进行了精细对比解释,并对断裂系统进行了分类及组合,厘定了断裂的发生期次。结果表明:塔中I号坡折带断裂系统根据规模大小及形成期次可划分三级。一级断裂形成于加里东期,早海西期形成的断裂为二级断裂,晚海西期形成的断裂为三级断裂。各级断裂对奥陶系的储层都有不同程度的影响,由于断裂活动的继承性,该区断裂系统对早期形成的碳酸盐岩储层的改造作用是不断叠加的。
By using coherent body analysis and visualization,the strike direction and spatial distribution characteristics of the fault systems of Tazhong No.1 slope break belt are finely correlated and interpreted;the fault systems are classified and grouped;and the occurrence stages of the faults are clarified.The results show that the fault systems of Tazhong No.1 slope break belt can be divided into three levels according to fault scales and occurrence stages.Level 1 faults were formed in the Caledonian period;level 2 faults were formed in the early Hercynian;and level 3 faults were formed in the late Hercynian.The faults in different levels have varying influence on Ordovician reservoirs and the transformation action of the early-formed carbonate reservoirs resulted from those faults was continuously superimposed due to the inheritance of faults.
By using coherent body analysis and visualization,the strike direction and spatial distribution characteristics of the fault systems of Tazhong No.1 slope break belt are finely correlated and interpreted;the fault systems are classified and grouped;and the occurrence stages of the faults are clarified.The results show that the fault systems of Tazhong No.1 slope break belt can be divided into three levels according to fault scales and occurrence stages.Level 1 faults were formed in the Caledonian period;level 2 faults were formed in the early Hercynian;and level 3 faults were formed in the late Hercynian.The faults in different levels have varying influence on Ordovician reservoirs and the transformation action of the early-formed carbonate reservoirs resulted from those faults was continuously superimposed due to the inheritance of faults.
引文
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[2]何登发,周新源,张朝军,等.塔里木多旋回叠合盆地地质结构特征[J].中国石油勘探,2006,11(1):31-41.
[3]李本亮,管树巍,李传新,等.塔里木盆地塔中低凸起古构造演化与变形特征[J].地质论评,2009,55(4):521-530.
[4]李明杰,胡少华,王庆果,等.塔中地区走滑断裂体系的发现及其地质意义[J].石油地球物理勘探,2006,41(l):116-121.
[5]李曰俊,吴根耀,孟庆龙,等.塔里木盆地中央地区的断裂系统:几何学、运动学和动力学背景[J].地质科学,2008,43(1):82-118.
[6]任建业,张俊霞,阳怀忠,等.塔里木盆地中央隆起带断裂系统分析[J].岩石学报,2011,27(1):219-230.
[7]杨海军,胡太平,于红枫,等.塔中地区上奥陶统礁滩复合体储层地震预测技术[J].石油与天然气地质,2008,29(2):230-236.
[8]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.
[9]汪伟光,喻莲.塔里木盆地塔中低凸起潜山区奥陶系油气成藏条件[J].特种油气藏,2011,18(4):30-34.
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