摘要
建立了各向异性双重低渗介质油藏中两相非达西渗流数学模型 ,用有限差分法求得其解 ,进行了实例分析。结果表明 :非达西流使水驱前缘推进速度加快 ,使油井见水早 ;注入率越大 ,前缘推进速度越快 ,油井见水越早。注水开发这种油藏时 ,见水前注入率不能太大 ;见水后可适当增大注入率 (存在一最佳注入率 ) ,以减弱非达西流的影响 。
A mathematical model of two phase non Darcy percolation has been established for reservoirs with anisotropic dual media of low permeability, and is solved by using finite difference method. Example analysis is also conducted. The result shows that waterflood frontal movement of non Darcy flow is fast, resulting in earlier water breakthrough; the higher the injection rate, the faster the frontal movement, and the earlier the breakthrough. When developing such reservoirs by water flooding, the injection rate cannot be too high before breakthrough; and it can be improved properly after breakthrough (there is an optimum rate) in order to reduce the influence of non Darcy flow. This may guide the development of low permeability, dual media reservoirs.
出处
《特种油气藏》
CAS
CSCD
2003年第2期49-52,102,共4页
Special Oil & Gas Reservoirs
基金
成都理工大学青年科学基金
博士后科学基金资助项目
