地学前缘 ›› 2023, Vol. 30 ›› Issue (6): 289-304.DOI: 10.13745/j.esf.sf.2023.2.23

• 海相深层-超深层碳酸盐岩油气动态成藏和聚集 • 上一篇    下一篇

塔里木盆地顺北地区走滑断裂带压扭段和张扭段油气成藏实验模拟及成藏特征研究

朱秀香1(), 曹自成1, 隆辉2,3, 曾溅辉2,3, 黄诚1, 陈绪云1   

  1. 1.中国石化西北油田分公司, 新疆 乌鲁木齐 830011
    2.中国石油大学(北京) 油气资源与探测国家重点实验室, 北京 102249
    3.中国石油大学(北京) 地球科学学院, 北京 102249
  • 收稿日期:2023-01-16 修回日期:2023-02-19 出版日期:2023-11-25 发布日期:2023-11-25
  • 作者简介:朱秀香(1983—),女,硕士,副研究员,主要从事塔里木盆地碳酸盐岩油气成藏研究工作。E-mail: 179520361@qq.com
  • 基金资助:
    国家自然科学基金项目(U19B6003-02);国家自然科学基金企业创新发展联合基金项目(U21B2063)

Experimental simulation and characteristics of hydrocarbon accumulation in strike-slip fault zone in Shunbei area, Tarim Basin

ZHU Xiuxiang1(), CAO Zicheng1, LONG Hui2,3, ZENG Jianhui2,3, HUANG Cheng1, CHEN Xuyun1   

  1. 1. Northwest Oilfield Company, ürümqi 830011, SINOPEC, China
    2. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China
    3. College of Geosciences, China University of Petroleum (Beijing), Beijing 102249, China
  • Received:2023-01-16 Revised:2023-02-19 Online:2023-11-25 Published:2023-11-25

摘要:

近年来,塔里木盆地顺北地区在超深碳酸盐岩取得重要勘探突破,发现了断控缝洞型油气藏。该油气藏具有良好的生储盖组合,走滑断裂不同组合样式对油气运聚具有重要的影响和控制作用。本文选取顺北地区典型走滑断裂压扭段和张扭段开展解析,明确压扭段具有树枝状和树杈状两种断裂组合样式,张扭段具有非对称式和对称式两种组合样式,结合实钻油气藏的开发特征,建立实验模型,进行物理模拟实验,发现断裂带物性、断裂连接关系、供烃强度及缝网系统的发育是影响油气水分布的主要因素,压扭段直接相连主次断裂处于成藏优势区,可作为后期勘探开发的重点。建立了顺北地区压扭段和张扭段不同的油气成藏模式,对深化深部走滑断裂油气运移和成藏理论、指导顺北地区断控缝洞型油气藏的勘探具有重要意义。

关键词: 塔里木盆地, 顺北地区, 奥陶系, 碳酸盐岩, 断控缝洞体油气藏, 物理模拟实验

Abstract:

An important breakthrough has been made in recent years in the exploration of ultra-deep carbonate rocks in Shunbei area, Tarim Basin with the discovery of fault-controlled fracture-cave reservoirs. These reservoirs show a good combination of source, reservoir and cap, where different strike-slip fault combination styles have important influence and control on the hydrocarbon migration and accumulation. In this paper, a typical strike-slip fault in Shunbei area is selected to analyze the compressive-torsional and tensional-torsional deformation segments, and it becomes clear that the former has a dendritic/dendritic combination style, and the latter has an asymmetric/symmetric style. Combined with seismic analysis of the drilled oil and gas reservoirs, an experimental model is established to conduct physical simulation experiments, and it is found that the main factors affecting the oil, gas, water distributions are the physical properties of the fault zone, the fracture connectivity, the intensity of the hydrocarbon supply and the development of the fracture networks. Being directly connected to the primary and secondary faults, the compressive-torsional deformation segment is superior for hydrocarbon accumulation, and can be a target area for later exploration and development. The above results provide deeper insights into the oil and gas migration and accumulation in deep strike-slip faults and can be used to guide the exploration of fault-controlled fracture-vuggy reservoirs in Shunbei area.

Key words: Tarim Basin, Shunbei area, Ordovician, carbonate rock, fault-controlled fracture-cave reservoirs, physical simulation experiment

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