致密砂岩气藏与页岩气藏展布模式  

Distribution patterns of tight sandstone gas and shale gas

作　　者：戴金星[1] 董大忠[1] 倪云燕 龚德瑜 黄士鹏[1] 洪峰[1] 张延玲[1] 刘全有 吴小奇[4] 冯子齐 DAI Jinxing;DONG Dazhong;NI Yunyan;GONG Deyu;HUANG Shipeng;HONG Feng;ZHANG Yanling;LIU Quanyou;WU Xiaoqi;FENG Ziqi(Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China;China University of Petroleum(Beijing),Beijing 102249,China;Peking University,Beijing 100871,China;Wuxi Institute of Petroleum Geology,Sinopec Petroleum Exploration and Production Research Institute,Wuxi 214126,China;China University of Petroleum(East China),Qingdao 266580,China)

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石油大学(北京),北京102249 [3]北京大学,北京100871 [4]中国石化石油勘探开发研究院无锡石油地质研究所,江苏无锡214126 [5]中国石油大学(华东),山东青岛266580

出　　处：《石油勘探与开发》2024年第4期667-678,共12页Petroleum Exploration and Development

基　　金：国家重点研发项目(2019YFC1805505);国家自然科学基金(42272188,42172149,U2244209);中国石油油气和新能源分公司科技专项(2023YQX10101);国家自然科学基金石化联合基金集成项目(U20B6001);贵州能源产业研究院有限公司页岩气院士工作站项目(筑科合同[2021]45-2)。

摘　　要：在阐述美国和中国致密砂岩气和页岩气资源潜力和年产量的基础上,系统梳理致密砂岩气藏与页岩气藏展布的研究沿革,分析页岩气藏、致密砂岩气藏展布特征及致密砂岩气成因类型。研究表明:(1)美国致密砂岩气在天然气总产量中占比由2008年的35%降至2023年的8%左右;美国页岩气2023年产量为8310×10^(8)m^(3),在天然气总产量中占比由2000—2008年的5%~17%升至2023年的70%以上。(2)中国致密砂岩气占天然气总产量比例由2010年的16%升至2023年的28%以上;2012年中国开始生产页岩气,2023年产量达250×10^(8)m^(3),约占天然气全国总产量的11%。(3)页岩气藏展布模式为连续型,根据页岩气藏是否有断层切割及断距与气层厚度的关系,连续型页岩气藏可分为连续式和断续式两种。(4)与以往大部分学者认为致密砂岩气藏展布模式为连续型的认识不同,致密砂岩气藏展布模式不是连续型;根据圈闭类型,致密砂岩气藏可分为岩性型、背斜型和向斜型3种。(5)中国3大克拉通盆地和埃及Obavied次盆的致密砂岩气为煤成气,美国阿巴拉契亚盆地和阿曼迦巴盐盆地的致密砂岩气为油型气。Based on an elaboration of the resource potential and annual production of tight sandstone gas and shale gas in the United States and China,this paper reviews the researches on distribution of tight sandstone gas and shale gas reservoirs,and analyzes the distribution characteristics of shale gas/tight sandstone gas reservoirs and genetic types of tight sandstone gas reservoirs.In the United States,the proportion of tight sandstone gas in the total gas production declined from 35% in 2008 to about 8% in 2023,and the shale gas production was 8 310×10^(8) m^(3) in 2023,as over 70% of the total gas production,in contrast to the range of 5%-17% during 2000-2008.In China,the proportion of tight sandstone gas in the total gas production increased from 16% in 2010 to 28% or higher in 2023.China began to produce shale gas in 2012,with the production reaching 250×10^(8) m^(3) in 2023,as about 11% of the total gas production of the country.The distribution of shale gas reservoirs is continuous.According to the fault segmentation,fault displacement and the gas layer thickness,the continuous shale gas reservoirs can be divided into two types:continuity and intermittency.Most of previous studies believed that both tight sandstone gas reservoirs and shale gas reservoirs are continuous,but this paper holds that the distribution of tight sandstone gas reservoirs is not continuous.According to the trap types,tight sandstone gas reservoirs can be divided into lithologic,anticlinal,and synclinal reservoirs.The tight sandstone gas is coal-derived gas in three cratonic basins in China and Obavied Subbasin in Egypt,but oil-type gas in Appalachia Basin in the United States and Ghaba Salt Basin in Oman.

关 键 词：页岩气 致密砂岩气 气藏特征 连续型成藏 岩性型成藏 背斜型成藏 向斜型成藏 煤成气 油型气 

分 类 号：P618.13[天文地球—矿床学]