陆相源内石油聚集地质理论认识及勘探开发实践  

Geological theory and exploration&development practice of hydrocarbon accumulation inside continental source kitchens

作　　者：焦方正 邹才能[2] 杨智[3] JIAO Fangzheng;ZOU Caineng;YANG Zhi(China National Petroleum Corporation,Beijing 100007,China;Research Institute of Petroleum Exploration&Development,PetroChina,Beijing 100083,China)

机构地区：[1]中国石油天然气集团有限公司,北京100007 [2]中国石油勘探开发研究院,北京100083 [3]中国石油勘探开发研究院石油天然气地质研究所,北京100083

出　　处：《石油勘探与开发》2020年第6期1067-1078,共12页Petroleum Exploration and Development

基　　金：国家重点基础研究发展计划(973)项目(2014CB239000);国家油气重大专项(2016ZX05046)。

摘　　要：中国陆相源岩层系内石油资源丰富,是大力提升国内石油勘探开发力度和保障国家石油安全的重要战略领域。基于近两年中国石油天然气集团有限公司探区陆相源内石油地质研究和勘探开发最新进展,①提出陆相源内石油聚集及“甜点”地质内涵,源内石油聚集是指赋存于陆相富有机质页岩烃源层系内、原地滞留或源内捕获烃类而形成的富液态烃聚集,“甜点”是指整体含油的陆相烃源层系内,相对更富含油、物性更好、更易改造、具商业开发价值的有利储集层,主要包括夹层型、混积型和页岩型3类“甜点”;②研究取得咸水及淡水湖盆优质页岩可规模生烃、页岩层系多类有利储集层具规模储集能力、源内页岩层系整体含油且资源规模大、存在较多有利开发页岩层系等主要理论认识,勘探开发实践正推动形成以“甜点勘探”和“体积开发”为核心的勘探开发关键技术系列,先导试验为源内石油经济有效开发提供重要科学依据,推广应用已取得初步明显应用成效;③中国陆相源内中高成熟度富液态烃和中低成熟度富有机质两类源内石油资源潜力巨大,鄂尔多斯、松辽、渤海湾、准噶尔等盆地是主要资源赋存区。有效应对勘探开发各项理论技术挑战,将推动两类源内石油资源成为未来现实性接替石油资源和重大战略性接替石油资源。Continental shale strata in China are rich in petroleum resources and are an important area to strengthen domestic oil exploration and development.Based on the latest progress in geological research and exploration and development of petroleum inside continental source kitchens of China National Petroleum Corporation exploration areas in recent two years,we have achieved the following results:(1)The geological connotations of continental intra-source petroleum accumulation and“sweet spot”have been proposed.The intra-source petroleum accumulation refers to the accumulation of liquid hydrocarbons retained or captured in the continental organic-rich shale strata,and“sweet spot”refers to the favorable reservoir with higher oil content,better physical properties,easier to stimulate and higher in commercial development value in the overall oil-bearing continental source rock series,they can be divided into three types,interlayer,hybrid sediment and shale.(2)High-quality shale formations in both salt water and freshwater lacustrine basins can generate hydrocarbons on a large scale,shale strata have multiple types of favorable reservoirs with large-scale storage capacity,the intra-source shale strata are overall oil-bearing and large in resource scale,and there are multiple favorable shale series for development.The exploration and development practice is propelling the formation of a series of exploration and development key technologies with“sweet spot exploration”and“volume development”as the core.Some pilot tests of these technologies have provided an important scientific basis for the economic and effective development of intra-source petroleum accumulation,and popularization of these technologies have achieved encouraging results preliminarily.(3)Two types of continental intra-source petroleum resources in China have great potential,including medium-high maturity with liquid-rich hydrocarbons and medium-low maturity with organic-rich matter.The Ordos,Songliao,Bohai Bay and Junggar basins are the mai

关 键 词：源内石油聚集 陆相页岩油 连续分布 整体含油 储集层甜点 体积开发 源储一体 

分 类 号：TE122[石油与天然气工程—油气勘探]