摘要
致密油气藏作为非常规油气的代表近年来备受关注,而储层研究是油气勘探主攻核心。致密油气储层的热点研究领域集中在几个方面:储层主要沉积砂体的发育模式、致密砂岩储层致密化成因机理、致密背景下高孔渗储层形成和保存机理、盆地尺度上成岩作用。对逐个问题进行分析归纳总结:近源三角洲沉积相致密砂体的发育模式决定了储层基本特征;储层中矿物与流体的相互作用包括矿物溶解过程、运移过程、二次沉淀过程和对孔隙喉道的充填过程是储层致密化的成因;致密层局部高孔渗形成机制在研究方法上应强调有机地球化学和无机地球化学之间的成因联系;含油气盆地成岩作用的研究核心为盆地动力学过程,重点是流体-岩石相互作用机制和长期演化过程。对今后致密油气储层发展研究提出建议:立足基础,加强野外调查;着重实验,建立成藏模型;建立数据库,加紧创新。
Tight oil and gas reservoirs have attracted much attention as a representative of unconventional oil and gas reservoirs in recent years,and reservoir research has always been the core of oil and gas explo- ration.The research hot spots of the tight oil and gas reservoir focus on the following aspects：the develop- ment model of the sand bodies as reservoirs,densification mechanism of tight sandstone reservoir,formation and preservation mechanism of high-porosity-permeability reservoir under the dense background,and diagenesis on basin scale.Through the analysis of the issues one by one,conclusions were summarized as follows：the development model of the tight sand body deposited as near-source delta determines the basic features of the reservoir;the interaction between minerals and fluids ,including the process of mineral solution ,migration, secondary precipitation and filling to pore and throat,has a decisive influence on reservoir densification;it should be emphasized the connection between organic geochemistry and inorganic geochemistry in the study of the formation mechanism of local high-porosity-permeability of dense layers ;the core of the study on the di- agenesis of petroliferous basins is the basin dynamics with the emphasis on the fluid-rock interaction mecha- nism and the long-term evolution process.Some suggestions for the future development of the tight oil and gas reservoirs were put forward：more field investigation should be made;experiments should be focused and accumulation model should be established ;databases should be built and innovation should be speeded up.
出处
《中外能源》
CAS
2017年第8期37-42,共6页
Sino-Global Energy
基金
"大型油气田及煤层气开发科技重大专项"(编号:2016ZX05007-004)资助
关键词
致密油气储层
沉积模式
致密化
流体作用
成岩作用
盆地动力学
tight oil and gas reservoir
sedimentary model
densification
fluid process
diagenesis
basin dynamics
