致密储层孔隙结构对渗吸的影响研究进展

Research Progress on the Impact of Tight Reservoir Pore Structure on Spontaneous Imbibition

随着传统油气资源的逐渐枯竭,以致密油资源为代表的非常规油气资源在能源开发和利用方面具有越来越重要的地位。然而,相较于常规储层,致密油储层的孔隙结构非常复杂,其孔隙尺寸分布广泛、孔隙类型多样且孔喉发育,这些因素给致密油储层的开采提出了极大挑战。对致密油储层的孔隙结构及其自发渗吸机制进行深入研究对于提高致密油采收率具有非常重要的意义。基于此,通过文献调研,对致密油储层的孔隙结构和渗吸机理研究进行了综述,从孔隙结构的表征手段、致密油孔隙结构的研究进展、孔隙结构与致密油渗吸机理之间的影响机制等方面进行介绍,并对该领域的研究进展进行了总结和展望。该研究可为致密油储层原油开发提供了借鉴,助推致密油采收技术的发展。

Against the backdrop of the gradual depletion of conventional oil and gas resources,unconventional oil and gas resources,represented by tight oil resources,are increasingly gaining importance in energy development and utilization.However,compared to conventional reservoirs,the pore structure of tight oil reservoirs is highly complex,featuring with wide distribution of pore sizes,diverse pore types,and well-developed pore throats.All these factors pose significant challenges to the exploitation of tight oil reservoirs.Therefore,a thorough research on the pore structure and spontaneous imbibition mechanism in tight oil reservoirs is crucial for improving tight oil recovery rates.Based on this,through literature review,this paper provides an overview of the research on the pore structure and imbibition mechanism of tight oil reservoirs,introducing characterization methods for pore structure,research progress on tight oil pore structure,the impact mechanism of pore structure on tight oil imbibition mechanism,and summarizing and prospecting the research progress in this field.This study can provide reference for the development of crude oil production in tight oil reservoir and promote the development of tight oil recovery technology.