石油学报 ›› 2006, Vol. 27 ›› Issue (6): 39-42,46.DOI: 10.7623/syxb200606009

• 地质勘探 • 上一篇    下一篇

柴达木盆地西部地区Ⅻ号断层的特征

赵东升1,2, 吕宗伦2, 杨乾政2, 吴清雅2, 孟祥超2, 保吉成2, 郝小梅2, 刘桂花2   

  1. 1. 西北大学大陆动力学国家重点实验室 陕西西安 710069;
    2. 中国石油青海油田公司 甘肃敦煌 7362022
  • 收稿日期:2005-12-14 修回日期:2006-05-19 出版日期:2006-11-25 发布日期:2010-05-21
  • 作者简介:赵东升,男,1966年12月生,2006年获西北大学博士学位,现为中国石油青海油田公司高级工程师,主要从事石油地质综合研究工作.E-mail:zhaods07@163.com
  • 基金资助:
    长江学者和创新团队发展计划项目(IRT0559)资助

Characteristics of No. Ⅻ fault in west part of Qaidam Basin

Zhao Dongsheng1,2, LÜ Zonglun2, Yang Qianzheng2, Wu Qingya2, Meng Xiangchao2, Bao Jicheng2, Hao Xiaomei2, Liu Guihua2   

  1. 1. State Key Laboratory of Continental Dynamics, Northwest University, Xi'an 710069, China;
    2. PetroChina Qinghai Oilfield Company, Dunhuang 736202, China
  • Received:2005-12-14 Revised:2006-05-19 Online:2006-11-25 Published:2010-05-21

摘要: 利用三维地震反射层的特点、沉积地层厚度的变化、油井产能的突变、地层压力系数与地层倾角的差异等参数确定了柴达木盆地西部地区Ⅻ号断层的存在,并通过构造演化分析确定了该断层的性质。柴达木盆地西部地区跃进一号构造与砂西构造之间的Ⅻ号断层早期为受拉张作用控制的正断层,后期演化为受挤压作用控制的逆断层;断层开启时是油气的运移通道,而封闭时使跃进一号构造与砂西构造形成了各自独立的油水系统,在开发过程中必须采取相应的措施才能达到稳产与提高产能的目的。

关键词: 柴达木盆地, 地层参数, Ⅻ号断层特征, 油气运移通道, 异常高压, 油田开发

Abstract: According to the strata parameters such as characteristics of three-dimensional seismic reflection, variation in thickness of sedimentary formation, abrupt capacity of oil well, and differences of formation pressure coefficient and dip angle, the existence and the property of No. Ⅻ fault in the west part of Qaidam Basin were investigated by analyzing the structural evolution. The result showed that No. Ⅻ fault existed between Yuejinyihao and Shaxi structures in the west part of Qaidam Basin. This fault was a normal fault resulted from extension in the early stage and then turned into reverse fault under extrusion. The fault was the oil-gas migration pathway when it was open. The independent oil-water system formed in Yuejinyihao and Shaxi structures when the fault was sealed. Because of existence of this fault, necessary steps should be taken to stabilize oil well yield and improve well deliverability during the development of Yuejinyihao and Shaxi oilfields.

Key words: Qaidam Basin, strata parameters, No. Ⅻ fault property, oil-gas migration pathway, abnormal high-pressure, oilfield development

中图分类号: