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南方海相页岩气超压特征及主要选区指标研究

刘洪林，王红岩，孙莎莎，吝文   

  1. (1.中国石油勘探开发科学研究院廊坊分院，河北 廊坊 065007；
    2.国家能源页岩气研发(实验)中心，河北 廊坊 065007；
    3.中国石油非常规油气重点实验室，河北 廊坊 065007)
  • 收稿日期:2015-08-13 修回日期:2016-01-26 出版日期:2016-03-10 发布日期:2016-03-10
  • 作者简介:刘洪林(1973-)，男，山东鱼台人，高级工程师，博士，主要从事非常规天然气地质评价研究. E-mail:liuhonglin69@petrochina.com.cn.
  • 基金资助:

    国家重大专项“页岩气勘探开发关键技术研究项目”(编号：2011ZX05018)；国家“973”项目“中国南方海相页岩气高效开发基础研究”(编号：2013CB228001)联合资助.

The formation mechanism of over-pressure reservoir and target screening index in south China marine shale

Liu Hong-lin，Wang Hong-yan，Sun Sha-sha，Lin Wen   

  1. (1.Langfang Branch,Research Institute of Petroleum Exploration and Development,PetroChina,Langfang 065007,China;
    2.National Energy Shale gas Research and Development Centre,Langfang 065007,China;
    3.Unconventional Oil and Gas Key Lab,PetroChina,Langfang 065007,China)
  • Received:2015-08-13 Revised:2016-01-26 Online:2016-03-10 Published:2016-03-10

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摘要：

针对我国南方海相高成熟、强改造的地质背景，结合国内典型的超压页岩气田的特征分析，系统开展页岩气超压特征、成藏机制研究，认为增压机制主要包括构造增压、水热增压、黏土矿物脱水增压及生烃增压，焦石坝页岩气田为典型的构造增压型超压页岩气田，长宁页岩气田为典型的生烃增压型超压页岩气田。认为针对我国南方整体较为复杂的构造特点，应该把地层压力系数作为一项重要指标纳入页岩气地质选区指标体系，可以充分体现我国南方海相页岩气成藏的特征，同时提高页岩气地质选区的准确性。

关键词: 海相页岩, 超低含水饱和度, 超压核心区, 地层压力系数

Abstract:

The marine strata in the south China are characterized by high maturity,and strong transformation of geology background.In this paper,combined with the typical overpressure shale gas reservoir characteristics analysis system,the authors investigate the shale gas overpressure characteristics and reservoir formation mechanism,and proposed a booster mechanism include overpressure,hot water booster,clay mineral dehydration,hydrocarbon charging.Jiaoshiba is a typical tectonic-induced overpressure shale gas reservoir and Changning is a typical hydrocarbon generation pressurization type.In this study,the structure characteristics of southern China is considered,and the formation pressure coefficient is considered as an important index into shale gas geological selection index system,which could fully reflect the characteristics of marine strata in southern China and increase the accuracy in shale gas geological area selection.

Key words: Marine shale, Ultra-low saturation, Over-pressure core area, Strata pressure coefficient

中图分类号: 

  • TE122.1

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