摘要
陆相页岩油包括中低成熟度和中高成熟度两大资源类型,二者在资源赋存环境、潜力、开采方式与使用技术以及工业评价标准等方面均不同,此外,陆相页岩油与美国页岩油和致密油也有诸多不同,科学界定这些资源类型的不同内涵,对推动陆相页岩油勘探从"源外"进入"源内",成为未来战略接替资源具有重要意义。明确了中低成熟度和中高成熟度两类陆相页岩油的内涵,前者是指埋藏300 m以深且Ro值小于1.0%的陆相富有机质页岩层系中赋存的液态烃和多类有机物的统称,后者是指埋深在蒂索(Tissot)模式"液态窗"范围、Ro值大于1.0%的富有机质页岩段中存在的液态石油烃的总称;系统总结了不同类型陆相页岩油的地质特征、资源潜力和经济评价标准。经评价,中国中低成熟度页岩油原位转化技术可采资源量约为(700~900)×10^8 t,中等油价(60~65美元/bbl)下的经济可采量为(150~200)×10^8 t,是保证陆相页岩油革命发生的主体,应依据井组累计采出量规模、建产规模、保存条件及开采经济性等关键参数,优选试验靶区,同时攻关核心技术装备;中高成熟度页岩油地质资源量约100×10^8 t,可采量尚需在单井日产量与累计采出量达至经济门限后确定。陆相页岩油与致密油有明确的边界,存在岩性组合、相带分布与产能评价标准等不同,二者可以按不同资源类型独立区分、并行存立。中国陆相页岩油类型、资源潜力及与致密油边界系统厘定,可为即将到来的页岩油勘探开发实践提供借鉴,有助于中国陆相页岩油革命的顺利发展。
Continental shale oil has two types,low-medium maturity and medium-high maturity,and they are different in terms of resource environment,potential,production methods and technologies,and industrial evaluation criteria.In addition,continental shale oil is different from the shale oil and tight oil in the United States.Scientific definition of connotations of these resource types is of great significance for promoting the exploration of continental shale oil from"outside source"into"inside source"and making it a strategic replacement resource in the future.The connotations of low-medium maturity and medium-high maturity continental shale oils are made clear in this study.The former refers to the liquid hydrocarbons and multiple organic matter buried in the continental organic-rich shale strata with a burial depth deeper than 300 m and a Ro value less than 1.0%.The latter refers to the liquid hydrocarbons present in organic-rich shale intervals with a burial depth that in the"liquid window"range of the Tissot model and a Ro value greater than 1.0%.The geological characteristics,resource potential and economic evaluation criteria of different types of continental shale oil are systematically summarized.According to evaluation,the recoverable resources of in-situ conversion technology for shale oil with low-medium maturity in China is about(700-900)×10^8 t,and the economic recoverable resources under medium oil price condition($60-65/bbl)is(150-200)×10^8 t.Shale oil with low-medium maturity guarantees the occurrence of the continental shale oil revolution.Pilot target areas should be optimized and core technical equipment should be developed according to the key parameters such as the cumulative production scale of well groups,the production scale,the preservation conditions,and the economics of exploitation.The geological resources of medium-high maturity shale oil are about 100×10^8 t,and the recoverable resources can to be determined after the daily production and cumulative production of a single well reach the economic threshold.Continental shale oil and tight oil are different in lithological combinations,facies distribution,and productivity evaluation criteria.The two can be independently distinguished and coexist according to different resource types.The determination of China’s continental shale oil types,resources potentials,and tight oil boundary systems can provide a reference for the upcoming shale oil exploration and development practices and help the development of China’s continental shale oil.
作者
赵文智
胡素云
侯连华
杨涛
李欣
郭彬程
杨智
ZHAO Wenzhi;HU Suyun;HOU Lianhua;YANG Tao;LI Xin;GUO Bincheng;YANG Zhi(Research Institute of Petroleum Exploration&Development,PetroChina,Beijing 100083,China)
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2020年第1期1-10,共10页
Petroleum Exploration and Development
基金
国家科技重大专项（2016ZX05046）
中国石油天然气股份有限公司国际合作项目（2015D-4810-02）
关键词
页岩油
中高成熟度
中低成熟度
资源潜力
致密油
边界
页岩油革命
shale oil
medium-high maturity
low-medium maturity
resource potential
tight oil
boundary
shale oil revolution
