湖相富有机质泥质白云岩生排烃模拟及其对页岩油勘探的启示
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  • 英文篇名:Simulation of Hydrocarbon Generation and Expulsion for Lacustrine Organic-Rich Argillaceous Dolomite and Its Implications for Shale Oil Exploration
  • 作者:李志明 ; 郑伦举 ; 蒋启贵 ; 马中良 ; 陶国亮 ; 徐二社 ; 钱门辉 ; 刘鹏 ; 曹婷婷
  • 英文作者:Li Zhiming;Zheng Lunju;Jiang Qigui;Ma Zhongliang;Tao Guoliang;Xu Ershe;Qian Menhui;Liu Peng;Cao Tingting;Wuxi Research Institute of Petroleum Geology,SINOPEC;State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development;State Energy Center for Shale Oil Research and Development;Key Laboratory of Petroleum Accumulation Mechanisms,SINOPEC;
  • 关键词:湖相 ; 富有机质泥质白云岩 ; 生排烃模拟 ; 赋存方式 ; 成熟度 ; 石油地质
  • 英文关键词:lacustrine;;organic-rich argillaceous dolomite;;simulation of hydrocarbon generation and expulsion;;occurrence;;maturity;;petroleum geology
  • 中文刊名:DQKX
  • 英文刊名:Earth Science
  • 机构:中国石化石油勘探开发研究院无锡石油地质研究所;页岩油气富集机理与有效开发国家重点实验室;国家能源页岩油研发中心;中国石化油气成藏重点实验室;
  • 出版日期:2018-02-15
  • 出版单位:地球科学
  • 年:2018
  • 期:v.43
  • 基金:国家重点基础研究发展计划(“973”计划)项目(No.2014CB239101);; 中国石油化工股份有限公司科技开发部项目(No.P14157)
  • 语种:中文;
  • 页:DQKX201802017
  • 页数:11
  • CN:02
  • ISSN:42-1874/P
  • 分类号:237-247
摘要
富有机质湖相白云质泥岩、泥质白云岩及其贫有机质粉砂岩、白云岩夹层是我国陆相盆地页岩油勘探的重要领域,但目前针对湖相富有机质白云质泥岩或泥质白云岩在近地质条件下的生排烃一体化模拟研究尚属空白.以典型低熟富有机质泥质白云岩为例,开展了近地质条件下的生排烃一体化模拟实验,揭示了其呈现四阶段生排烃演化模式.结果表明,Ro≤0.74%时为缓慢生油伴生烃气、排油能力有限阶段,0.74%排油能力逐渐增高阶段,0.84%排油阶段,1.30%        The organic-rich lacustrine dolomitic mudstone,argillaceous dolomite,organic-poor siltstone and dolomite interlayer are important areas for shale oil exploration in terrestrial basins in China.However,the research on the integration of hydrocarbon generation,expulsion and hydrocarbon accumulation in the lacustrine organic-rich dolomitic mudstone or argillaceous dolomite under near geological conditions is still blank.An integrate experiment of hydrocarbon generation and expulsion simulation from argillaceous dolomite rich in organic matter under near geological condition in confined systems,has been carried out with typical lower mature organic-rich argillaceous dolomite.The four-stage of hydrocarbon generation and expulsion evolution mod-el is revealed.The results show that the first stage is characterized by relatively slow oil generation associated hydrocarbon gases and by limited ability of oil expulsion when Rois≤0.74%.The second stage is characterized by rapid oil generation associated hydrocarbon gases and with incremental ability of oil expulsion when Rois in the range of 0.74%-0.84%.The third stage is characterized by hydrocarbon gas generation associated oil and oil initial cracking,and by oil expulsion effectively at 0.84%1.30%.And the retained oil is mainly occurred as adsorption phase with organic matter at Ro<0.68%,and mainly occurred as free phase within micron to nano-scale pores and microfractures in mineral matrix of argillaceous dolomite at 0.68%≤Ro≤2.00%.The range of thermal maturity for favorable shale oil exploration within lacustrine dolomite measures,is proposed at 0.84%-1.30%,on the basis of the results of simulation of hydrocarbon generation and expulsion for lacustrine organic-rich argillaceous dolomite,integrated with geological conditions and exploring economic benefit.
引文
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