摘要
全球非常规页岩层系油气资源丰富,富有机质页岩主要沉积在劳亚构造域和特提斯构造域的上侏罗统、渐新统—中新统、白垩系和上泥盆统4套页岩层系内。交汇分析北美典型页岩油区块产量与R_(o)数据关系,提出R_(o)为0.7%作为低熟页岩油和中高熟页岩油的界限,系统评价了全球116个盆地157套页岩层系中高熟页岩油、低熟页岩油技术可采资源量约2512亿t,主要分布在北美洲、南美洲、北非和俄罗斯,以前陆盆地中新界、克拉通盆地古生界、裂谷盆地和被动大陆边缘盆地的中生界为主。海相页岩油受显生宙以来的海侵影响,富集在稳定克拉通和前陆等类型盆地中,具大面积稳定分布、成熟度适中等特征;陆相页岩油受暖室期气候影响,主要在坳陷、断陷等类型盆地中发育,以微纳米级无机孔隙和微页理裂缝为主要储渗空间通道,具有沉积相横向变化大、“甜点区段”局部富集等特征。中国石油工业正经历从“陆相页岩生油”向“陆相页岩产油”转变,初步形成源岩油气“进源找油”地质理论、陆相页岩油高效勘探及低成本开发技术体系,推动中国陆相页岩油取得重要突破。着力加强应用基础理论研究与关键技术攻关,构建地质-工程一体化模式,强化全生命周期管理理念,加快中高熟页岩油“压裂人工油藏”工业化发展,加强低熟页岩油“加热原位转化”技术攻关与工业化试验,推动实现中国“陆相页岩油革命”,夯实“稳油增气”资源基础。
The global unconventional shale formations contain rich oil and gas resources,and worldwide there are four major shale formations namely Upper Jurassic,Oligocene-Miocene,Cretaceous and Upper Devonian formations of the Laurasia and Tethys tectonic domains.In this study,the relationship between production and R_(o) value of typical North America shale oil is identified by cross-analysis,and a R_(o) value of 0.7%is proposed dividing the low-maturity and medium-high maturity shale oil.In addition,systematic evaluation is performed on low and high maturity shale oil from 157 shale formations in 116 basins around the world,which involves 251.2 billion tons of technically recoverable resources distributed mainly in North America,South America,North Africa and Russia,where the dominant strata are Miocene formations of foreland basins,Paleozoic formations of cratonic basins,and Mesozoic formations of rift basins and passive continental margin basins.Affected by marine transgression since the Phanerozoic marine shale oil is enriched in stable craton and foreland basins with large-scale stable distribution and moderate maturity;whilst due to greenhouse effect continental shale oil developed mainly in depression and fault-depression basins,where micro and nano inorganic pores and micro laminate fractures serve as the main channels for hydrocarbon migration/accumulation characterized by rapid sedimentary transformation and local enrichment in“sweet spots”.China s petroleum industry is undergoing a transition from“continental shale oil generation”to“continental shale oil production”,with the initial developments of the geological theory on“in-source exploration”of oil/gas source rocks and the technical system for‘high-efficiency exploration and low-cost development’of continental shale oil,seeking major breakthroughs in continental shale oil development in China.Future research should focus on the basic applied theories and key technologies,geology-engineering integration,and“full life cycle”management,aiming to accelerate industrial development of“artificially fractured reservoirs”of medium-high maturity shale oil,enhance technical research and industrial testing on in-situ thermal conversion of low-maturity shale oil,promote“continental shale oil revolution”in China,and solidify resource foundation achieved by stabilizing oil production while increasing gas production.
作者
邹才能
马锋
潘松圻
张新顺
吴松涛
傅国友
王红军
杨智
ZOU Caineng;MA Feng;PAN Songqi;ZHANG Xinshun;WU Songtao;FU Guoyou;WANG Hongjun;YANG Zhi(Petrochina Research Institute of Petroleum Exploration and Development,Beijing 100083,China;Technology Administration Department,PetroChina Company Limited,Beijing 100007,China)
出处
《地学前缘》
EI
CAS
CSCD
北大核心
2023年第1期128-142,共15页
Earth Science Frontiers
基金
国家自然科学基金项目(41902151,42172180)
中国石油天然气股份有限公司科学研究与技术开发项目(2021DJ1802)。
关键词
全球
页岩油
中高熟页岩油
低熟页岩油
资源评价
非常规油气
global
shale oil
medium-high maturity shale oil
low-maturity shale oil
resource evaluation
unconventional oil and gas
