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断裂应力特征及其转折控油气规律研究——以南堡凹陷为例

马强 德勒恰提·加娜塔依 陈亚军 马乐 于景维 祁利祺

马强, 德勒恰提·加娜塔依, 陈亚军, 等, 2018. 断裂应力特征及其转折控油气规律研究——以南堡凹陷为例. 地质力学学报, 24 (5): 587-597. DOI: 10.12090/j.issn.1006-6616.2018.24.05.059
引用本文: 马强, 德勒恰提·加娜塔依, 陈亚军, 等, 2018. 断裂应力特征及其转折控油气规律研究——以南堡凹陷为例. 地质力学学报, 24 (5): 587-597. DOI: 10.12090/j.issn.1006-6616.2018.24.05.059
MA Qiang, DELEQIATI·Jantay, CHEN Yajun, et al., 2018. A STUDY ON FAULT STRESS CHARACTERISTICS AND THE LAW OF OIL AND GAS CONTROLLING BY FAULT DEFLECTING: A CASE STUDY OF THE NANPU DEPRESSION. Journal of Geomechanics, 24 (5): 587-597. DOI: 10.12090/j.issn.1006-6616.2018.24.05.059
Citation: MA Qiang, DELEQIATI·Jantay, CHEN Yajun, et al., 2018. A STUDY ON FAULT STRESS CHARACTERISTICS AND THE LAW OF OIL AND GAS CONTROLLING BY FAULT DEFLECTING: A CASE STUDY OF THE NANPU DEPRESSION. Journal of Geomechanics, 24 (5): 587-597. DOI: 10.12090/j.issn.1006-6616.2018.24.05.059

断裂应力特征及其转折控油气规律研究——以南堡凹陷为例

doi: 10.12090/j.issn.1006-6616.2018.24.05.059
基金项目: 

国家自然科学基金 41562008

详细信息
    作者简介:

    马强(1994-), 男, 在读硕士, 主要研究石油与天然气勘探。E-mail:892160673@qq.com

    通讯作者:

    德勒恰提·加娜塔依(1962-), 女, 研究员, 主要从事石油地质勘探。E-mail:1065620118@qq.com

  • 中图分类号: P551

A STUDY ON FAULT STRESS CHARACTERISTICS AND THE LAW OF OIL AND GAS CONTROLLING BY FAULT DEFLECTING: A CASE STUDY OF THE NANPU DEPRESSION

  • 摘要: 为了分析断裂对油气宏观分布规律的控制作用,寻找有勘探潜力的油气富集带,文中以地质力学理论为指导,对南堡凹陷断裂组合应力特征、断裂转折及成因进行解析,并结合砂体分布和古今构造应力场分布特征,对南堡凹陷东营组油气分布规律和有利勘探区带做了研究。结果表明:断裂转折部位对油气分布有着控制作用,东营组已探明的油气主要在帚状断裂系、入字形断裂系、交织式断裂系转折轴部高曲率附近呈环带状分布;断裂转折凹面一侧控油性明显,从宏观上来看,油气具有沿沉积相带由细到粗的构造脊高点以及弧形断裂转折凹面一侧的选择性运移的特征,断裂转折轴部高曲率高孔、高渗域与高孔、高渗砂体沉积相带的有利对置决定了油气的主流向;综合研究指出,南堡凹陷北堡构造带是今后优势勘探的首要区带,其次是南堡构造带和南堡4号蛤坨构造带南部。

     

  • 图  1  南堡凹陷构造位置、构造单元以及断层、油气分布图

    Figure  1.  Location and tectonic units of the Nanpu Depression and the distribution of faults and oil and gas

    图  2  高序级断层与低序级断层关系示意图[9]

    Figure  2.  Schematic diagram of the relationship between high-order faults and low-order faults[9]

    图  3  南堡1号构造带入字型断裂系统及其局部应力场

    Figure  3.  The λ type Fault system and local stress field of the Nanpu No.1 structural belt

    图  4  入字型构造平面应变图

    注:正值区表示应变后的膨胀区,数值越大,膨胀越大;负值区表示应变后的收缩区,负值的绝对值越大表示收缩越强

    Figure  4.  Strain diagram of the λ-type structure plane

    图  5  旋扭构造旋回层示意图[11]

    Figure  5.  Schematic diagram of the cyclothem of a torsion structure[11]

    图  6  单轴压应力作用下断裂转折部位的应力集中现象[26]

    Figure  6.  Stress concentration in fault deflecting parts under uniaxial compressive stress[26]

    图  7  南堡凹陷馆陶组底面构造图与东营组油气储量叠合

    Figure  7.  The structure map of the Guantao formation bottom in the Nanpu Depression overlapped with the oil and gas reserves in Dongying formation

    图  8  南堡凹陷东一段油气分布与高孔隙度带及断裂输导、转折关系

    Figure  8.  Relations between the oil and gas distribution of the Dong-1 member in the Nanbu Depression, high porosity zone, fault transportation and fault deflecting

    图  9  南堡凹陷东营组构造剪应力等值线图

    (据文献[31])

    Figure  9.  Contour map of tectonic shear stress of Dongying formation in the Nanpu Depression (after [31])

    图  10  南堡1号断裂带入字型断裂系转折轴部高曲率与油气分布关系

    Figure  10.  Relations between the high curvature of deflecting shaft of the λ-type fault system in the Nanbu No.1 fault zone and the oil and gas distribution

    图  11  南堡凹陷东营组含油气预测图

    (阴影部分表示油气有利聚集区)

    Figure  11.  Prediction map of oil and gas of Dongying formation in Nanpu Depression

    (Shaded parts in the map indicate the favorable areas for gathering oil and gas)

    表  1  南堡凹陷断裂平面组合模式

    Table  1.   Composite pattern of fault planes in the Nanpu Depression

    表  2  部分已知油藏周围有利井位位置

    Table  2.   Favorable location of well around part of the known oil reservoirs

    已知油藏 有利位置 已知油藏 有利位置 已知油藏 有利位置
    NP4-2 南部 NP1-88 北东部 M10x1 北部
    NP4-57 北西部 NP1-90 北东部 M10 西南部
    NP401x3 北西部 NP1 北东部 G5 北部
    NP4-55 西部 NP1-4 西南部 G10 西部
    NP3-2 西部 NP5-10 北部 G29-6 西部
    NP3-19CZ 西部 NP503 西北部 L10 东部
    NP286 南部 M2 南部 L68-1 东北部
    NP288 东部 M36 南部 B22x1 北部
    NP2-82 西南部 G23 西部 M16x1 西北部
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  • 收稿日期:  2018-03-26
  • 修回日期:  2018-05-28
  • 刊出日期:  2018-10-01

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