论文部分内容阅读
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。
As a representative of unconventional oil and gas, tight oil and gas reservoirs have drawn much attention in recent years, and reservoir research is the core of oil and gas exploration. The hot research fields of tight oil and gas reservoirs are concentrated in several aspects: the development pattern of main sedimentary sand bodies in reservoirs, the genesis mechanism of densification of tight sandstone reservoirs, the formation and preservation mechanism of high porosity and permeability reservoirs in tight background, diagenesis at basin scale effect. The paper analyzes and summarizes the problem by case: the development pattern of tight sand body in sedimentary facies of near source determines the basic characteristics of reservoir; the interaction between mineral and fluid in reservoir includes mineral dissolution process, migration process, secondary sedimentation process and The filling process of pore throats is the cause of reservoir densification. The mechanism of local high porosity and permeability formation in dense layers should emphasize the genetic relationship between organic geochemistry and inorganic geochemistry in the research methods. The basin dynamics process focuses on fluid-rock interaction mechanisms and long-term evolutionary processes. Suggestions for future research on the development of tight oil and gas reservoirs: based on the foundation, strengthen the field investigation; focus on experiments to establish the reservoir forming model; establish a database to step up innovation.