石油与天然气地质 ›› 2015, Vol. 36 ›› Issue (1): 23-34.doi: 10.11743/ogg20150104

• 油气地质 • 上一篇    下一篇

南堡凹陷沙三段致密砂岩气成藏条件

郭继刚1,2, 董月霞3, 庞雄奇1,4, 黄红祥3, 姜福杰1,4, 徐静1, 王鹏威1, 彭威龙1   

  1. 1. 中国石油大学 盆地与油藏研究中心, 北京 102249;
    2. 国土资源部 油气资源战略研究中心, 北京 100034;
    3. 中国石油 冀东油田分公司, 河北 唐山 063004;
    4. 中国石油大学 油气资源与探测国家重点实验室, 北京 102249
  • 收稿日期:2014-08-15 修回日期:2014-11-12 出版日期:2015-02-08 发布日期:2015-02-11
  • 第一作者简介:郭继刚(1986-), 男, 博士, 油气藏形成机理与分布规律.E-mail:guojigang1986@126.com
  • 基金项目:

    国家自然科学基金项目(41102085,U1262205);国家重点基础研究发展规划("973"计划)项目(2011CB201102);国家科技重大专项(2011ZX05006-006).

Accumulation conditions of tight sand gas in the 3rd member of the Shahejie Formation in Nanpu Sag, Bohai Bay Basin

Guo Jigang1,2, Dong Yuexia3, Pang Xiongqi1,4, Huang Hongxiang3, Jiang Fujie1,4, Xu Jing1, Wang Pengwei1, Peng Weilong1   

  1. 1. Research Center of Basin and Reservoir, China University of Petroleum, Beijing 102249, China;
    2. Strategic Research Center of Oil and Gas Resources, Ministry of Land and Resources, Beijing 100034, China;
    3. Jidong Oil Company, PetroChina, Tangshan, Heibei 063004, China;
    4. Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China
  • Received:2014-08-15 Revised:2014-11-12 Online:2015-02-08 Published:2015-02-11

摘要:

在对烃源岩和储层基本特征分析的基础上,采用生烃潜力法恢复了烃源岩的排烃历史,并从数值模拟的角度研究了储层孔隙度的演化历史。结果表明,渤海湾盆地南堡凹陷沙河街组三段具有良好的致密砂岩气成藏地质条件:中等-好的供气源岩和广泛分布的致密储层,烃源岩与致密储层紧密相邻,天然气成藏时间和储层致密时间配置较好。烃源岩的排气高峰时间是在馆陶期到明化镇早期,储层致密的时间是馆陶末期到明化镇早期。在生烃增压造成的气体膨胀力作用之下,天然气可近源聚集在紧邻烃源岩分布的致密透镜状岩性砂体中,形成连续型致密砂岩气藏。

关键词: 成藏条件, 烃源岩, 致密砂岩气, 沙河街组三段, 南堡凹陷

Abstract:

Based on analyses of the source rocks and reservoirs in the Es3 (the 3rd member of Shahejie Fm), the hydrocarbon expulsion history was restored with the hydrocarbon generation potential method, and evolution history of reservoir porosity was established through numerical modeling.The results show that accumulation conditions of tight sand gas in the Es3 in the Nanpu Sag of the Bohai Bay Basin are pretty good: fair-good source rocks and widespread reservoirs were closely connected with each other, and the timing of gas accumulation and reservoir tightening was favorable.The peak gas expulsion occurred from the Guantao to early Minghuazhen, while the reservoir tightening was from the late Guantao to early Minghuazhen.These gases might accumulate in the lenticular sand body near the source rocks under the force of gas expansion, forming continuous tight sand gas reservoirs.

Key words: accumulation condition, source rock, tight sand gas, the 3rd member of Shahejie Formation, Nanpu Sag

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