西南石油大学学报(自然科学版) ›› 2023, Vol. 45 ›› Issue (5): 27-42.DOI: 10.11885/j.issn.1674-5086.2020.12.09.02

• 地质勘探 • 上一篇    下一篇

渝东南彭水地区页岩储层构造应力场模拟解析

葛勋1,2,3, 汤济广4, 赵培荣5, 唐永6, 许启鲁7   

  1. 1. 页岩油气富集机理与高效开发全国重点实验室, 北京 昌平 102206;
    2. 中国石化页岩油气勘探开发重点实验室, 北京 昌平 102206;
    3. 中国石化石油勘探开发研究院, 北京 昌平 102206;
    4. 长江大学地球科学学院, 湖北 武汉 430100;
    5. 中国石油化工集团, 北京 朝阳 100728;
    6. 长江大学非常规油气湖北省协同创新中心, 湖北 武汉 430100;
    7. 中国石油大学(华东)地球科学与技术学院, 山东 青岛 266580
  • 收稿日期:2020-12-09 发布日期:2023-10-28
  • 通讯作者: 汤济广,E-mail:cugtang@126.com
  • 作者简介:葛勋,1994年生,女,汉族,黑龙江大庆人,工程师,博士,主要从事非常规油气地质综合等方面的研究。E-mail:gexun.syky@sinopec.com;汤济广,1978年生,男,汉族,湖北黄冈人,副教授,主要从事盆地构造分析与油气成藏方面的研究。E-mail:cugtang@126.com;赵培荣,1971年生,男,汉族,浙江杭州人,高级工程师,博士,主要从事油气地质与勘探开发管理。E-mail:kmzpr@126.com;唐永,1998年生,男,汉族,湖北江陵人,助理研究员,博士,主要从事裂缝和构造应力场的研究工作。E-mail:water_0820@163.com;许启鲁,1989年生,男,汉族,山东泰安人,副教授,博士,主要从事油气储层地质学研究。E-mail:xuqilu@upc.edu.cn
  • 基金资助:
    国家自然科学基金企业创新发展联合基金(U19B6003);中国石化勘探分公司项目(35450003-17-ZC0607-0036)

Simulation and Analysis of Tectonic Stress Field of Shale Reservoir in Pengshui Area, Southeast Chongqing

GE Xun1,2,3, TANG Jiguang4, ZHAO Peirong5, TANG Yong6, XU Qilu7   

  1. 1. National Key Laboratory of Shale Oil and Gas Enrichment Mechanism and Effective Development, Changping, Beijing 102206, China;
    2. SINOPEC Shale Oil and Gas Exploration and Development Key Laboratory, Changping, Beijing 102206, China;
    3. SINOPEC Petroleum Exploration and Production Research Institute, Changping, Beijing 102206, China;
    4. School of Geosciences, Yangtze University, Wuhan, Hubei 430100, China;
    5. China Petroleum & Chemical Corporation, Chaoyang, Beijing 100728, China;
    6. Hubei Cooperative Innovation Center of Unconventional Oil and Gas, Yangtze University, Wuhan, Hubei 430100, China;
    7. School of Geosciences, China University of Petroleum, Qingdao, Shandong 266580, China
  • Received:2020-12-09 Published:2023-10-28

摘要: 渝东南彭水地区自中新生代以来,构造变形作用复杂,精细解析古构造应力场的方向与构造演化时序,对彭水地区地应力进行定量表征,对整个彭水地区甚至整个渝东南地区页岩气的勘探和开发都具有重要的指导意义。通过对彭水地区以及周缘野外节理和断层擦痕进行统计分析处理,结合流体包裹体均一温度和磷灰石定年方法,重建研究区古构造应力场演化过程。同时,应用Abaqus对五峰组-龙马溪组页岩储层两期古构造应力场的应力值进行了定量计算。结果表明,渝东南彭水地区主要经历了两期构造作用,中燕山期,受到江南隆起SE-NW的递进扩展作用;晚燕山期-喜马拉雅期,青藏高原的隆升在研究区引起NE向的挤压。构造应力场数值模拟显示,最大主应力的高值区主要分布在向斜核部、断裂带末端和断层交汇处。应力数值模拟是研究裂缝发育程度以及深层压裂效应的基础,能够有效提高钻探的成功率。

关键词: 构造应力场数值模拟, 构造演化时序, 五峰组-龙马溪组, 页岩储层, 彭水地区

Abstract: There has been complex structural deformation in Pengshui Area of southeast Chongqing since Mesozoic and Cenozoic. The direction of paleotectonic stress field and tectonic evolution sequence are analyzed in detail, and the quantitative characterization of ground stress is of great guiding significance for the exploration and development of shale gas in Pengshui Area and even in southeast Chongqing. Through analysis and treatment of joint and fault striations in Pengshui Area and its periphery, combined with homogenization temperature of inclusions and apatite dating method, the evolution of paleotectonic stress field in Pengshui Area was reconstructed. Abaqus software is used to quantitatively calculate the stress value of paleotectonic stress field in Wufeng—Longmaxi Formations shale reservoir. The results show that Pengshui Area in southeastern Chongqing mainly experienced two stages of tectonism. In the Middle Yanshan period, it was gradually expanded by SE—NW in Jiangnan uplift. In the Late Yanshanian—Himalayan period, the uplift of Qinghai—Tibet Plateau caused NE-trending compression in Pengshui Area. The numerical simulation of tectonic stress field shows that the high value areas of maximum principal stress are mainly distributed in syncline core, end of fault zone, fault intersection. Stress numerical simulation is the basis of fracture development and deep fracturing research, which can effectively improve the success rate of drilling.

Key words: numerical simulation of tectonic stress field, tectonic evolution sequence, Wufeng-Longmaxi Formations, shale reservoir, Pengshui Area

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