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柴北缘鄂博梁构造带油气成藏条件 及勘探部署

孙 平1 汪立群2 郭泽清1 田继先1 张 林1 曾 旭1 张绍胜1   

  1. 1 中国石油勘探开发研究院;2 中国石油青海油田分公司勘探开发研究院
  • 出版日期:2014-08-15 发布日期:2014-08-15
  • 作者简介:孙平(1963-),男,甘肃庄浪人,博士,2007 年毕业于成都理工学院,教授级高级工程师,现主要从事石油天然气、煤 层气地质研究及技术管理工作。地址:河北省廊坊市万庄中国石油勘探开发研究院廊坊分院天然气地质所,邮政编码:065007。 E-mail: sunp69@petrochina.com.cn
  • 基金资助:
    国家科技重大专项大型油气田及煤层气开发(2011ZX05007);中国石油天然气股份有限公司重大科技专项柴达木盆地 建设千万吨油气田综合配套技术研究(2011E-03)。

Oil and Gas Accumulation Conditions of Eboliang Structural Belt on Northern Periphery of Qaidam Basin and Exploration Strategy

Sun Ping1, Wang Liqun2, Guo Zeqing1, Tian Jixian1, Zhang Lin1, Zeng Xu1, Zhang Shaosheng1   

  1. PetroChina Research Institute of Petroleum Exploration & Development,Langfang Branch; Exploration & Development Research Institute of PetroChina Qinghai Oilfield Company
  • Online:2014-08-15 Published:2014-08-15

摘要: 柴达木盆地北缘鄂博梁构造带由鄂博梁Ⅰ号、鄂博梁Ⅱ号、鄂博梁Ⅲ号和葫芦山4 个地面构造组成。近 期的综合研究和老井复查表明:该区带具有优越的天然气成藏条件:位于侏罗系生气凹陷之内、发育大型构造圈闭、 具有优质储层和良好储盖组合以及深大断裂沟通气源,发育源内和源上两种成藏模式。近期,邻近的牛东构造获得重 大突破,其他构造已钻井都有气显示,并且鄂7 井获得工业气流。在成藏条件和目前勘探现状综合分析的基础上,提 出该区优先风险钻探鄂博梁Ⅰ号构造;积极准备其他构造,其中以开展精细地震勘探鄂博梁Ⅲ号构造为重点,精细落 实圈闭后投入勘探。

Abstract: Eboliang structural belt on the northern periphery of Qaidam Basin is composed of four surface structures – Eboliang No.Ⅰ, Eboliang No. Ⅱ , Eboliang No. Ⅲ and Hulushan. The latest study and re-investigation of old wells indicate that this belt has good conditions for natural gas accumulations, because it is located in the Jurassic gas sourcing depression with development of large-scale structural traps, high-quality reservoir-cap assemblages and the deep and large faults that connect gas sources. There are two patterns for gas accumulations – within the source and above the source. Significant breakthroughs have been made in the nearby Niudong structure in recent time. Gas show was found in drilling of other structures. In addition, E-7 Well obtained an industrial gas flow. Based the accumulation conditions and analysis of the current exploration conditions, this paper proposes to drill exploration wells first in Eboliang No.Ⅰ structure in this belt while making active preparations for other structures. Meanwhile, the detailed seismic exploration efforts should be focused on Eboliang No. Ⅲ structure to locate the trap for exploration.