焉耆盆地宝北背斜断裂组合模式与运动学特征
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摘要
位于新疆焉耆盆地的宝北区块,次级断层十分发育。次级断裂具有规模小、断距小、延伸距离短,以及地震资料分辨率较低,剖面不易识别的特点。本文基于区域构造背景,采用三维地震、测井资料解释及钻井岩芯精细观测等多种方法对该区块三级断层的几何学、运动学和动力学特征进行了综合研究,并对三级断层的展布规律、组合模式和动力学机制进行了讨论。该区块是在区域构造应力场控制下受到不均匀挤压作用,而具有独特哑铃状形态的背斜构造。继而发育的次级断裂构造的分布规律和性质具有明显的分区特征:NW段为左行走滑剪切模式,SE段为右行走滑剪切模式。其动力学机制为不均匀推挤作用下的横弯双向剪切模式。
Baobei anticline is located in Baolang oil field, Sinkiang. Faults are well developed in this area. These faults are small and cannot be identified easily. Based on the 3D seismic data, well logging and observation of cores accurately, this paper studies the geometry, kinematics and dynamics of faults. Then, we discuss the development, combination patterns and dynamical mechanism of faults. The deformation of the unique shape of Baobei anticline is the result of the nonuniform pressure from the SW. The distributions and combinations of faults can be divided into two sharply distinguished parts. The combination pattern of faults denotes the left-lateral strike-slip at the NW part, andright-lateral strike-slip at the SE part.
Baobei anticline is located in Baolang oil field, Sinkiang. Faults are well developed in this area. These faults are small and cannot be identified easily. Based on the 3D seismic data, well logging and observation of cores accurately, this paper studies the geometry, kinematics and dynamics of faults. Then, we discuss the development, combination patterns and dynamical mechanism of faults. The deformation of the unique shape of Baobei anticline is the result of the nonuniform pressure from the SW. The distributions and combinations of faults can be divided into two sharply distinguished parts. The combination pattern of faults denotes the left-lateral strike-slip at the NW part, andright-lateral strike-slip at the SE part.
引文
[1]郭召杰,张志诚,钱祥麟.塔里木东北缘的一个早中侏罗世拉分盆地—焉耆盆地[J].地学前缘.1995,(2):255-256
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[6]陈希敏,杨波,曹建康.焉耆盆地含油气碎屑岩储层微裂缝隙特征及其影响因素分析[J].成都理工学院学报.2000,27(3)
[7]刘新月,余培湘,李方清等.焉耆盆地构造变形特征及成因分析[J].煤田地质与勘探.2004,32(6):5-8
[8]陶良军,冯兴武,黄青松等.宝浪油田地应力和裂缝特征研究与应用[J].钻采工艺.2001,24(2):25-27
[9]刘新月,余培湘,李方清,周祖翼.焉耆盆地构造变形特征及成因分析.煤田地质与勘探.2004,32(6):5-8
[2]袁正文.焉耆盆地构造演化分析[J].江汉石油学院学报.2003,25(4):33-35
[3]吴富强,陈文礼,曹建康等.对焉耆盆地基底的认识[J].新疆石油地质.1998,19(6):453-457
[4]张永华.焉耆盆地构造样式及其对油气聚集的控制[J].断块油气田.2000,7(5):8-10
[5]黄郑,孙尚茹,刘斌等.宝北背斜三级断层识别及对油田开发的影响[J].河南石油.2001,15(4):24-27
[6]陈希敏,杨波,曹建康.焉耆盆地含油气碎屑岩储层微裂缝隙特征及其影响因素分析[J].成都理工学院学报.2000,27(3)
[7]刘新月,余培湘,李方清等.焉耆盆地构造变形特征及成因分析[J].煤田地质与勘探.2004,32(6):5-8
[8]陶良军,冯兴武,黄青松等.宝浪油田地应力和裂缝特征研究与应用[J].钻采工艺.2001,24(2):25-27
[9]刘新月,余培湘,李方清,周祖翼.焉耆盆地构造变形特征及成因分析.煤田地质与勘探.2004,32(6):5-8
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