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    川西坳陷源内油气成藏主控因素及模式:以孝泉-丰谷构造带须家河组五段为例

    田杨 朱宏权 叶素娟 卓俊驰 谢锐杰 熊剑文

    田杨, 朱宏权, 叶素娟, 卓俊驰, 谢锐杰, 熊剑文, 2021. 川西坳陷源内油气成藏主控因素及模式:以孝泉-丰谷构造带须家河组五段为例. 地球科学, 46(7): 2494-2506. doi: 10.3799/dqkx.2020.257
    引用本文: 田杨, 朱宏权, 叶素娟, 卓俊驰, 谢锐杰, 熊剑文, 2021. 川西坳陷源内油气成藏主控因素及模式:以孝泉-丰谷构造带须家河组五段为例. 地球科学, 46(7): 2494-2506. doi: 10.3799/dqkx.2020.257
    Tian Yang, Zhu Hongquan, Ye Sujuan, Zhuo Junchi, Xie Ruijie, Xiong Jianwen, 2021. Main Controlling Factors and Models of Hydrocarbon Accumulation in the Source of Western Sichuan Depression: Taking Xu 5th Member of Xujiahe Formation in Xiaoquan-Fenggu Structural Belt as an Example. Earth Science, 46(7): 2494-2506. doi: 10.3799/dqkx.2020.257
    Citation: Tian Yang, Zhu Hongquan, Ye Sujuan, Zhuo Junchi, Xie Ruijie, Xiong Jianwen, 2021. Main Controlling Factors and Models of Hydrocarbon Accumulation in the Source of Western Sichuan Depression: Taking Xu 5th Member of Xujiahe Formation in Xiaoquan-Fenggu Structural Belt as an Example. Earth Science, 46(7): 2494-2506. doi: 10.3799/dqkx.2020.257

    川西坳陷源内油气成藏主控因素及模式:以孝泉-丰谷构造带须家河组五段为例

    doi: 10.3799/dqkx.2020.257
    基金项目: 

    国家科技重大专项子课题 2016ZX05002-004-009

    详细信息
      作者简介:

      田杨(1989-), 男, 博士, 主要从事构造年代学、成藏动力学和成藏机理研究.ORCID: 0000-0002-0803-4366.E-mail: tianyanger_happy@126.com

      通讯作者:

      朱宏权, E-mail: zhuhongquan.xnyq@sinopec.com

    • 中图分类号: P618.13

    Main Controlling Factors and Models of Hydrocarbon Accumulation in the Source of Western Sichuan Depression: Taking Xu 5th Member of Xujiahe Formation in Xiaoquan-Fenggu Structural Belt as an Example

    • 摘要: 上三叠统须家河组是四川盆地川西坳陷的主力烃源岩系,而孝泉-丰谷构造带须家河组五段则是川西坳陷致密砂岩气勘探开发的新领域.利用地质、录井、钻井、分析化验等资料,结合盆地模拟技术,在须五段内部烃源岩、储集层特征以及其发育构造-沉积背景分析的基础上,探讨了孝泉-丰谷构造带须家河组五段源内成藏的主控因素,并建立了相应模式.须五段泥页岩连续稳定分布,有机质丰度高,有机质类型以Ⅲ为主,总体上处于成熟-高成熟阶段;砂岩储层总体为特低孔特低渗致密储层;沉积相以三角洲前缘亚相为主.须五段源内成藏主控因素为烃源岩控制气藏范围和规模,有利相带决定了优质储层发育位置,源储配置关系控制油气富集程度,异常高压有效保存和改造;总结其成藏模式为源内短距离垂向叠覆运聚模式.

       

    • 图  1  川西坳陷构造分区

      Fig.  1.  Structural zoning map of western Sichuan depression

      图  2  川丰125井沉积-层序-地化综合剖面

      Fig.  2.  Comprehensive section of sedimentation-sequence-geochemistry in the Chuanfeng 125 well

      图  3  须五段中亚段沉积相

      Fig.  3.  Sedimentary facies map of central section in the fifth member of Xujiahe Formation

      图  4  孝泉-丰谷构造带须五段有机质丰度判别

      Fig.  4.  Abundance discrimination diagram of organic matter in the fifth member of Xujiahe Formation of Xiaoquan-Fenggu structural belt

      图  5  孝泉-丰谷构造带须五段有机质类型分布

      Fig.  5.  Distribution of organic matter types in the fifth member of Xujiahe Formation of Xiaoquan-Fenggu structural belt

      图  6  孝泉-丰谷构造带须五段Ro与深度关系

      Fig.  6.  Relationship between Ro and depth in the fifth member of Xujiahe Formation member of Xiaoquan-Fenggu structural belt

      图  7  孝泉-丰谷构造带须五段烃源岩优质指数与含气量关系

      Fig.  7.  Relationship between quality index and gas content of source rocks in the fifth member of Xujiahe Formation of Xiaoquan Fenggu structural belt

      图  8  孝泉-丰谷构造带须五段砂岩孔隙度(a)与渗透率(b)分布

      Fig.  8.  Distribution of porosity (a) and permeability (b) in in the fifth member of Xujiahe Formation of Xiaoquan-Fenggu structural belt

      图  9  孝泉-丰谷构造带典型单井领五段层序-沉积-地化连井剖面

      Fig.  9.  Sequence-sedimentary-geochemical cross section in the fth member of Xujiahe Formation of Xiaoquan-Fenggu structural belt

      图  10  川丰125井优质烃源岩小层T3x5-6生排烃史

      Fig.  10.  Hydrocarbon generation and expulsion history of T3x5-6 high quality source rock in Chuanfeng 125 well

      图  11  孝泉-丰谷地区典型单井流体包裹体镜下特征图、均一温度分布图及充注期次

      Fig.  11.  Fluid inclusions microscopic characteristic diagram, homogeneous temperature distribution diagram and filling period diagram of typical single well in Xiaoquan-Fenggu area

      图  12  源储配置类型

      Fig.  12.  Schematic diagram of source storage configuration type

      图  13  川孝93井排烃效率剖面

      Fig.  13.  Profile of hydrocarbon expulsion efficiency in Chuanxiao 93 well

      图  14  川孝568井压力预测

      Fig.  14.  Pressure prediction chart of Chuanxiao 568 well

      图  15  川西地区须五段中亚段压力系数平面分布

      Fig.  15.  Plane distribution of pressure coefficient in central section of the fifth member of Xujiahe Formation in western Sichuan

      图  16  川罗562井单井压力演化史

      Fig.  16.  Evolution history of single well pressure in Chuanluo 562 well

      图  17  孝泉-丰谷构造带须五段成藏模式

      Fig.  17.  Reservoir forming model of the fifth member of Xujiahe Formation in Xiaoquan-Fenggu structural belt

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