库车坳陷克拉2气藏异常高地层压力成因力学分析

张明利; 谭成轩; 汤良杰; 孙炜锋

库车坳陷克拉2气藏异常高地层压力成因力学分析

1.
中国石油化工集团公司石油勘探开发科学研究院, 北京 100083
2.
中国地质科学院地质力学研究所, 北京 100081
3.
石油大学盆地中心, 北京昌平 102249

基金项目:

国家重点基础研究发展规划项目“中国典型叠合盆地油气形成富集与分布预测” G19990433

详细信息

作者简介:
张明利(1963-), 男, 高级工程师, 主要从事石油构造、构造应力场研究.E-mail: tanchengxuan@163.net

中图分类号: P618.13
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出版历程
- 收稿日期: 2003-03-05
- 刊出日期: 2004-01-25

An Analysis on Mechanical Genesis of Overpressure at Kala 2 Gas Pool in Kuqa Down-Warping Region

1.
Institute of Hydrocarbon Exploration and Development, China Petroleum & Chemical Cooperation, Beijing 100083, China
2.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
3.
Basin Center, University of Petroleum, Beijing 102249, China

摘要

摘要: 在已有的众多超压机制中, 构造应力作用是人们普遍认为有效的少数几种增压机制之一.为此, 进行了克拉2气藏剖面三维构造应力场数值模拟.研究结果表明在克拉2储集层构造部位有10MPa左右的应力集中, 克拉2气藏异常高地层压力中约5 0MPa由构造应力作用引起, 剩余部分由其他增压机制引起.该研究对于准确评价气藏的储量、指导气藏开发等有一定的意义.
- 库车坳陷 /
- 克拉2气藏 /
- 异常高地层压力
Abstract: Tectonic stress action is one of the few effective over-pressuring mechanisms in many existing over-pressuring mechanisms. Therefore, a vertical three-dimensional tectonic stress section passing Kala 2 gas pool is simulated. The results show that there is about 10 MPa stress concentration at Kala 2 reservoir structural part, and that there is about 50 MPa that is caused by tectonic stress action in the overpressure of Kala 2 gas pool, and the rest by other over-pressuring mechanisms. This research has significance for reasonably assessing and developing gas pool.
- Kuqa down-warping region /
- Kala 2 gas pool /
- overpressure

HTML全文

图 1 克拉2气藏构造简图

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图 2 三维构造应力场模拟有限元模型

Fig. 2. Finite element model for three-dimensional tectonic stress field simulation

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图 3 平均有效应力等值线(单位: MPa)

Fig. 3. Mean effective stress contour

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表 1 物理力学参数

Table 1. Physical and mechanical parameters

参考文献(11)

Bredehoeft, J. D., Wesley, J. B., Fouch, T. D., 1994. Simulation of the origin of fluid pressure, fracture generation, and the movement of fluids in the Uinta basin, Utah. AAPG Bulletin, 78 (11): 1729-1747.
Finkbeiner, T., Zoback, M., Flemings, P., et al., 2001. Stress, pore pressure, and dynamically constrained hydrocarbon columns in the South Eugene Island 330 field, northern Gulf of Mexico. AAPG Bulletin, 85 (6): 1007-1031.
Grauls, D. J., Baleix, J. M., 1994. Role of overpressure and in situ stresses in fault-controlled hydrocarbon migration: Acasestudy. Marine and Petroleum Geology, 11 (6): 734-742. doi: 10.1016/0264-8172(94)90026-4
Li, M. C., 1994. Oil and gas migration. Petroleum Industry Press, Beijing (inChinese).
Luo, X. R., Vasseur, G., 1992. Contributions of compaction and aquathermal pressuring to geopressure and the in fluence of environmental conditions. AAPG Bulletin, 76 (9): 1550-1559.
Prabhakara, R. P., 1987. Overburden stress gradient and stress ratio (S & Kfactors) of East Geodavari sub-basin (on shore) and its information pressure and fracture gradient estimates. Bulletin of the Oil and Natural Gas Commission, 24 (2): 133-153.
Tan, C. X., Jin, Z. J., Zhang, M. L., et al., 2001. An approach to the present-day three-dimensional (3D) stress field and its application to hydrocarbon migration and accumulation in the Zhangqiang depression, Liaohe field, China. Marine and Petroleum Geology, 18 (9): 983-994. doi: 10.1016/S0264-8172(01)00040-X
Wang, L. J., Zhang, L. R., Yuan, J. Y., et al., 1996. Crustal stress and oil-gas migration. Journal of Geomechanics, 2 (2): 3-10 (in Chinese with English abstract).
Yassir, N. A., Rogers, A. L., 1993. Overpressures, fluid flow and stress regimes in the Jeanne d'Arc basin, Canada. Int. J. RockMech. Min. Sci. & Geomech. Abstr., 30 (7): 1209-1213.
李明诚, 1994. 石油与天然气运移. 北京: 石油工业出版社.
王连捷, 张利容, 袁嘉音, 等, 1996. 地应力与油气运移. 地质力学学报, 2 (2): 3-10. https://www.cnki.com.cn/Article/CJFDTOTAL-DZLX201102004.htm