【摘要】 低渗透储层渗流具有非达西特征和启动压力梯度,是研究低渗透储层开发过程中问题的基础。文中探讨了低渗透储层非达西渗流机理,研究了低渗非达西渗流特征所引起的视渗透率变化。结合储层渗流特征和工程因素等方面研究了注水开发低渗透油藏所引起的视渗透率变化,并给出了改善低渗透储层开发效果的途径。研究表明,储层渗透率变化受多种因素影响,生产中所表现出来的现象是各种影响因素综合作用的结果。采取综合治理措施,减小各种不利因素的影响,有利于改善低渗透油田的开发效果。更多还原

【Abstract】 Research on characters of non-Darcy flow and starting pressure gradient of low permeability reservoir were foundation of reservoir production. Non-Darcy flow mechanism of low-permeability reservoir was discussed. And combined with reservoir percolation characteristic and engineering factors, apparent permeability change during waterflooding operation was researched, and approach of improved reservoir production effect was presented. Research proclaim,reservoir permeability change is caused by different kinds of influencing factors synthetic action. It is helpful to improving development effect of low-permeability reservoir to adopt comprehensive improvement measure to reduce the effect of different unfavoured factors.更多还原