摘要
随着油气勘探工作的日益深入 ,渴望在盆地中浅层取得大的突破已越来越困难。近年来世界油气勘探的一个重要发展趋势是向盆地深部拓展。国内外均广泛发现的超过油气稳定温度和深度下限的深层油气藏的存在 ,对传统的油气成因理论提出了严峻的挑战 ,用传统的油气成因理论对深层油气勘探中出现的一系列新问题难以作出合理的解释。系统总结了近年来国内外在深层油气方面的研究现状及最新进展。并从深层油气的温度、深层油气的分布、深层油气形成的物质基础、深层油气的稳定性以及深层油气的储集空间等方面论述了沉积盆地深层仍具有形成工业油气藏的条件和基础。理论研究和实际勘探结果均表明 ,烃源岩在较高的热演化阶段仍具有形成工业油气藏的成烃潜力。深部地层裂缝和微破裂带是不封闭的 ,流体可以沿此为通道发生运移并储集 。
It is more and more difficult to make important breakthrough on oil and gas exploration at present mainly research depth. So a very important tendency in recent years is to find oil and gas at deeper than present research strata. The extensive discovered deep oil and gas reservoirs that seated deeper than hydrocarbon stability temperature and stability depth lines have cause strong challenge to traditional oil and gas generating theory. Some new phenomena that occurred at deep oil and gas exploration are difficult to be explained by tradition oil and gas generating theory. This paper make a brief summary on research status and advances in deep oil and gas exploration. The discussions are based on from the point of temperature, occurrence and distribution, material base, stability and reservoir of deep oil and gas and states that deeper strata of the basins still have the ability to form commercial oil and gas reservoirs. The results of theory studying and practical exploration show that the source rocks are still have the commercial oil and gas generation potential at relative higher thermal revolution stages. The fractures and micro fracture swarms at deeper strata are connected and they could be as the migration pathways and reservoir for deep oil and gas accumulation. It is possible to form the great hydrocarbon mineral resources at deeper basin strata.
出处
《地球科学进展》
CAS
CSCD
2002年第4期565-571,共7页
Advances in Earth Science
基金
国家自然科学基金项目"油气在高温高压条件下的稳定性研究"(编号 :40 0 73 0 2 2 )
中国科学院资源环境研究重大项目"深层油气地球化学特征与成因机理研究"(编号 :KZ95 1 B1 414 )
中国科学院知识创新工程重要方向项目"中国西北深层气与未熟-低熟烃研究"(编
关键词
深层油气
油气成因理论
油气稳定性
Deep oil and gas
Oil and gas generating theory
Oil and gas stability.
