油气勘探

涪陵页岩气田富集高产主控地质因素

  • 郭旭升 ,
  • 胡东风 ,
  • 李宇平 ,
  • 魏志红 ,
  • 魏祥峰 ,
  • 刘珠江
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  • 中国石化勘探分公司,成都 610041
郭旭升(1965-),男,山东茌平人,博士,中国石化勘探分公司教授级高级工程师,主要从事石油地质综合研究和勘探工作。地址:四川省成都市高新区吉泰路688号,中国石化勘探分公司,邮政编码:610041。E-mail:guoxs.ktnf@sinopec.com 联系作者简介:李宇平(1969-),男,湖北应城人,博士,中国石化勘探分公司教授级高级工程师,主要从事石油地质综合研究工作。地址:四川省成都市高新区吉泰路688号,中国石化勘探分公司科技处,邮政编码:610041。E-mail:liyp.ktnf@sinopec.com

修回日期: 2016-12-29

  网络出版日期: 2017-07-27

Geological factors controlling shale gas enrichment and high production in Fuling shale gas field

  • GUO Xusheng ,
  • HU Dongfeng ,
  • LI Yuping ,
  • WEI Zhihong ,
  • WEI Xiangfeng ,
  • LIU Zhujiang
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  • Exploration Branch, Sinopec, Chengdu 610041, China

Revised date: 2016-12-29

  Online published: 2017-07-27

Supported by

中国石油化工股份有限公司基础研究项目“川渝地区海相优质页岩气层形成主控因素及预测技术”(P15074); 中国石油化工股份有限公司油气勘探重大导向项目“四川盆地及周缘页岩气勘探综合评价与目标优选”

摘要

在前期对南方海相页岩气富集规律认识的基础上,应用涪陵页岩气田的勘探开发资料,详细论述了涪陵页岩气田富集的主控因素及其相互关系,对海相页岩气“二元富集”理论认识有了进一步的思考。气田富集的基础首先在于气体的生成和储集,研究区深水陆棚页岩气储集层具有“高TOC、高孔隙度、高含气量、高硅质”四高特征,生烃强度高,有机质孔发育,有利于储集层改造,是涪陵页岩气“成烃控储”的基础。保存条件对页岩气的形成和富集至关重要,良好的页岩顶底板从页岩生烃开始就能有效阻止烃类纵向散失而滞留聚集,后期构造作用的强度与持续时间决定了页岩气保存条件,保存条件好是页岩气“成藏控产”的关键地质因素,页岩储集层含气性好、孔隙度高,地层(超)高压,有利于形成页岩气富集高产区。图13参30

本文引用格式

郭旭升 , 胡东风 , 李宇平 , 魏志红 , 魏祥峰 , 刘珠江 . 涪陵页岩气田富集高产主控地质因素[J]. 石油勘探与开发, 2017 , 44(4) : 481 -491 . DOI: 10.11698/PED.2017.04.01

Abstract

Based on the understandings on enrichment rules of marine shale gas in southern China and data obtained from exploration and development in Fuling shale gas field, this article discusses the key controlling factors on shale gas enrichment and their relationships, it also discusses further the theory of Two-Factor Enrichment of marine shale gas in southern China. The bases for shale gas enrichment are shale gas generation and accumulation, the shale gas reservoirs of deep-water shelf are characterized by high TOC, high porosity, high gas content and high siliceous content, with high hydrocarbon-generation intensity, they are rich in organic pores, favorable for reformation, so they are the base for large scale hydrocarbon accumulation. Preservation conditions are vital to the formation and enrichment of shale gas reservoir, good top and base layers can effectively prevent hydrocarbon from escaping vertically at the beginning of hydrocarbon generation. Shale gas preservation conditions depend on the intensity and duration of tectonic movements, good preservation conditions are key geological factors for shale gas accumulation, shale reservoirs have high gas content, high porosity and high pressure and are likely to form high yield area of shale gas.

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