石油学报 ›› 2015, Vol. 36 ›› Issue (S2): 145-155.DOI: 10.7623/syxb2015S2013

• 地质勘探 • 上一篇    下一篇

珠江口盆地珠一坳陷烃源灶控藏临界条件与控藏特征

代一丁1, 余秋华1, 李洪博1, 王卓超1, 白静2,3, 彭辉界1   

  1. 1. 中海石油(中国)有限公司深圳分公司 广东广州 510240;
    2. 油气资源与探测国家重点实验室 北京 102249;
    3. 中国石油大学盆地与油藏研究中心 北京 102249
  • 收稿日期:2015-05-11 修回日期:2015-10-22 发布日期:2016-02-24
  • 通讯作者: 代一丁,男,1963年7月生,1984年获西南石油学院学士学位,现为中海石油(中国)有限公司深圳分公司勘探部经理,主要从事石油地质学及油气勘探综合研究工作.Email:daiyd@cnooc.com.cn
  • 基金资助:

    国家重大科技专项(2011ZX05023-006)资助.

Threshold conditions and reservoir-controlling characteristics of source kitchen in Zhu I depression, Pearl River Mouth Basin

Dai Yiding1, Yu Qiuhua1, Li Hongbo1, Wang Zhuochao1, Bai Jing2,3, Peng Huijie1   

  1. 1. Shenzhen Branch, CNOOC China Limited, Guangdong Guangzhou 510240, China;
    2. State Key Laboratory of Petroleum Resources and Prospecting, Beijing 102249, China;
    3. Basin and Reservoir Research Center, China University of Petroleum, Beijing 102249, China
  • Received:2015-05-11 Revised:2015-10-22 Published:2016-02-24

摘要:

烃源灶作为油气生成的物质来源,对油气藏的形成和分布具有决定性控制作用,但以往研究都限于定性分析,不能满足含油气盆地不断深化勘探的要求.在烃源岩排烃研究的基础上,应用定量方法详细分析珠一坳陷烃源灶与油气分布的关系,确定烃源灶控藏的定量模式,并对烃源灶控制下的油气分布有利范围进行了定量预测.结果表明,在珠江口盆地珠一坳陷,文昌组和恩平组烃源灶控制着油气的来源、成藏时间、油气分布范围和资源潜力.烃源灶控油气藏形成和分布的临界条件表现在两个方面:①离烃源灶排烃中心越近,油气成藏概率越大,反之成藏概率越小;②烃源灶排烃强度越大,油气充注能力越大,油气成藏概率也越大.珠一坳陷内EP17洼、PY4洼、XJ27洼、HZ26洼以及LF13洼及其邻近区是油气成藏有利区.

关键词: 烃源灶, 油气藏分布预测, 油气成藏临界条件, 定量模式, 珠一坳陷, 珠江口盆地

Abstract:

As material sources for hydrocarbon generation, source kitchen plays a decisive controlling role in the formation and distribution of oil and gas reservoirs. However, previous research is often limited to qualitative analysis, unable to satisfy requirement of constant deepening exploration in hydrocarbon-bearing basins. Based on studying hydrocarbon expulsion of source rocks, a quantitative method was applied to analyze relationship between source kitchen and distribution of oil and gas at Zhu I depression in detail, determine the quantitative mode of source-kitchen reservoir control, and quantitatively predict favorable areas of hydrocarbon distribution under control of source kitchen. The results show that source kitchens of Wenchang Formation and Enping Formation control source, accumulation time, hydrocarbon distribution range and resource potential at Zhu I depression, Pearl River Mouth Basin. The critical conditions of reservoir formation and distribution under control of source kitchen are shown in two aspects:the probability of hydrocarbon accumulation is greater in the area closer to hydrocarbon expulsion center of source kitchen, otherwise, the probability is smaller; the greater the hydrocarbon expulsion intensity of source kitchen is, the greater the filling ability of oil and gas will be, and the greater the probability of hydrocarbon accumulation will be. EP17 sag, PY4 sag, XJ27 sag, HZ26 sag, LF13 sag and adjacent areas are favorable areas for hydrocarbon accumulation at Zhu I depression.

Key words: source kitchen, prediction of oil and gas distribution, threshold condition of hydrocarbon accumulation, quantitative mode, Zhu I depression, Pearl River Mouth Basin

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