页岩气赋存机理及富集条件
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摘要
当今能源时代,页岩气已然成为世界能源的研究热点之一。页岩气主要是以游离态和吸附态赋存于有机质页岩中的天然气,表现为自生自储、大面积连续聚集成藏、就近赋存的特点。与常规天然气相比,页岩气的赋存机理完全不同,分为吸附气和游离气两种状态且吸附气占主导。页岩气具有独特的地质特征和开发特点:源储一体,形成时间早并且持续聚集;无明显圈闭界限,富集仍需要良好封闭;储层致密,以纳米级孔隙为主;发育连续型、构造型两种页岩气模式,资源规模大。
In today's energy era,shale gas has become one of the research hotspots of the world's energy.The shale gas is mainly in free and adsorbed state,which occurs in the organic-rich shale interval.The characteristic of shale gasreservoir accumulation is mainly self-generated and self-storage,large-area continuous natural gas accumulation,and the near-occurrence.Compared with conventional natural gas,the occurrence mechanism of shale gas is completely different.It is divided into two states:adsorbed gas and free gas,and adsorbed gas dominates.Shale gas has unique geological and development characteristics:integration of source and reservoir,early formation and continuous accumulation;no obvious trap boundaries,enrichment still needs to be well sealed;tight reservoir,dominated by nano-pore;development of continuous and structural shale gas models with large-scale resources.
In today's energy era,shale gas has become one of the research hotspots of the world's energy.The shale gas is mainly in free and adsorbed state,which occurs in the organic-rich shale interval.The characteristic of shale gasreservoir accumulation is mainly self-generated and self-storage,large-area continuous natural gas accumulation,and the near-occurrence.Compared with conventional natural gas,the occurrence mechanism of shale gas is completely different.It is divided into two states:adsorbed gas and free gas,and adsorbed gas dominates.Shale gas has unique geological and development characteristics:integration of source and reservoir,early formation and continuous accumulation;no obvious trap boundaries,enrichment still needs to be well sealed;tight reservoir,dominated by nano-pore;development of continuous and structural shale gas models with large-scale resources.
引文
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[5]邹才能,董大忠,王社教,等.中国页岩气形成机理、地质特征及资源潜力[J].石油勘探与开发,2010,37(06):641-653.
[6]张大伟.加快中国页岩气勘探开发和利用的主要路径[J].天然气工业,2011,31(05):1-5.
[2]张金川,金之钧,袁明生.页岩气成藏机理和分布[J].天然气工业,2004,24(07):15-18.
[3]屈策计,李江山,刘玉博.页岩气赋存机理研究[J].中国石油和化工标准与质量,2013(15):157.
[4]罗媛,所明湘,袁华娟.页岩气成藏机理与富集条件研究[J].内江科技,2013(09):121.
[5]邹才能,董大忠,王社教,等.中国页岩气形成机理、地质特征及资源潜力[J].石油勘探与开发,2010,37(06):641-653.
[6]张大伟.加快中国页岩气勘探开发和利用的主要路径[J].天然气工业,2011,31(05):1-5.