石油与天然气地质 ›› 2009, Vol. 30 ›› Issue (6): 720-725,731.doi: 10.11743/ogg20090608

• 油气地质 • 上一篇    下一篇

川西坳陷盐井沟构造沙溪庙组现今地应力方向

邓虎成1, 周文1,2, 姜浩罡3, 姜文利4   

  1. 1. 成都理工大学, 四川, 成都, 610059;
    2. 成都理工大学, 油气藏地质及开发工程国家重点实验室, 四川, 成都, 610059;
    3. 中国石油化工股份有限公司, 西北油气分公司, 新疆, 乌鲁木齐, 830011;
    4. 中国国土资源部, 油气资源战略研究中心, 北京, 100034
  • 收稿日期:2009-10-20 出版日期:2009-12-25 发布日期:2012-01-16

Current terrestrial stress direction of the Shaximiao Formation in the Yanjinggou Structure of the West Sichuan Depression

Deng Hucheng1, Zhou Wen1,2, Jiang Haogang3, Jiang Wenli4   

  1. 1. Chengdu University of Technology, Chengdu, Sichuan 610059, China;
    2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Sichuan 610059, China;
    3. SINOPEC Northwest Company, Urumqi, Xinjiang 830011, China;
    4. Strategic Research Center of Oil & Gas Resources, Ministry of Land & Resources, Beijing 100034, China
  • Received:2009-10-20 Online:2009-12-25 Published:2012-01-16

PDF (PC)

944

被引次数

9

摘要：

川西坳陷盐井沟构造沙溪庙组属于低孔、低渗储层,现今地应力方向的研究是该区人工压裂获效的基础。通过追踪川西坳陷历年天然地震P波方向,结合相邻构造现今地应力方向的研究成果,对研究区现今地应力方向进行了分析和判断;在此基础上,通过单井取心古地磁定向实验和波速各向异性实验,进行现今最大主应力方向的测定和计算。结果发现,计算获得的现今地应力方向与天然地震和相邻构造上地应力方向具有一致性。综合各种资料及实验分析成果,判定研究区沙溪庙组现今地应力方向为北西向。

关键词: 天然地震, 波速各向异性, 现今地应力方向, 沙溪庙组, 盐井沟构造, 川西坳陷

Abstract:

Reservoir of the Shaximiao Formation in the West Sichuan Depression is of low porosity and permeability.To know the current terrestrial stress direction is the basis for effective fracturing in this area.Through tracking down the P-wave direction of natural earthquakes in the West Sichuan Depression over the years and referring to researches on current terrestrial stress direction in adjacent structures,the current terrestrial stress direction of the study area is analyzed and predicted.By the paleomagnetic directional experiments and velocity anisotropy experiment with single-well core,the maximum principal stress direction is measured and calculated.The results show that the calculated current terrestrial stress direction is consistent with that of the adjacent structures.Eventually,according to various data and experimental results,the current terrestrial stress direction of the Shaximiao Formation in the study area is determined to be a NW direction.

Key words: natural earthquake, velocity anisotropy, current terrestrial stress direction, Shaximiao Formation, Yanjinggou Structure, West Sichuan Depression

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