摘要
致密油可划分为源储互层型、源下储上型、源上储下型和源储一体型4种类型。通过中美致密油形成条件、资源潜力和开发现状对比,提出美国致密油大多为海相,技术可采资源主要分布在前陆盆地的二叠系、白垩系和泥盆系,主要富集在Permian、Western Gulf和Williston 3个盆地,主要储层为碳酸盐岩;中国已发现的致密油均为陆相,技术可采资源主要分布在克拉通盆地和裂谷盆地的三叠系、白垩系和古近系,主要富集在鄂尔多斯、松辽和渤海湾3个盆地,主要储层为砂岩。中国致密油资源潜力大、分布范围广,但地质与地表条件复杂,规模开发需要较长时间理论认识和工程技术准备,应给予适当的政策扶持。预测2030年我国致密油年产量有望达到(1 500~2 500)×10~4t,将成为石油生产的重要补充。
The tight oil can be divided into 4 types which include interbedded source and reservoir play,below-source and above-reservoir play,above-source and below-reservoir play,and integrated source and reservoir play.Through the comparison of the tight oil forming condition,resources potential and development status between China and U.S.,apoint of view is put forward that the U.S.tight oil plays are mostly marine facies and technically recoverable tight oil resources are mainly distributed in the Permian,Cretaceous and Devonian layers of foreland basins.Meanwhile,resources are mainly enriched in Permian,Western Gulf and Williston basins,while the dominating reservoirs are carbonate rocks.The tight oil plays discovered in China are all continental,and technically recoverable resources are mainly distributed in the Triassic,Cretaceous and Paleogene layers of craton and rift basins.Furthermore,tight oil resources are mainly enriched in Ordos,Songliao and Bohai Bay basins,while the primary reservoirs are sandstones.The tight oil resource potential in China is large and widely distributed,but the geology and surface conditions are complicated,and large scale exploitations need a long preparation period for the theoretical understanding and engineering technologies,so it is necessary that appropriate incentive policies should be enacted.The tight oil annual output in China is expected to reach 15-25 million tons in 2030,and it will be an important supplement to oil production.
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2017年第7期1126-1138,共13页
Natural Gas Geoscience
基金
国土资源部重大科技专项"全国油气资源动态评价(2015)"(编号:2015YQKYQ01)
国家科技重大专项课题"全球重点地区非常规油气资源潜力分析与未来战略选区"(编号:2011ZX05028-002)
中国石油天然气股份有限公司重大科技专项"中国石油第四次油气资源评价"(编号:2013E-0502)联合资助
关键词
致密油
资源
成藏条件
分布特征
开发现状
对比
启示
Tight oil
Resources
Accumulation conditions
Distribution characteristics
Development status
Comparison
Revelation
