分层注水情况下的注采系统节点分析方法初探

PRIMARY APPROACH TO NODAL ANALYSIS OF SEPARATED LAYER WATER FLOODING AND DIFFERENT INJECTION PATTERNS

在对多层分层注水情况下的油水井流入动态、水平管流、垂直管流、嘴流、泵举升油气水流动研究的基础上，根据节点分析原理，建立了多层分层注水开发、不同注水方式下的注采系统节点分析方法，并进行了实例研究。结果表明：利用该方法可以研究注采井间、层间的相互作用和影响，以确定最佳油水井的工作制度。将此法推广，可适用于两层以上油藏。

A nodal analysis method under the condition of multilayer injection and different injection patterns has been set up on the study of multiphase horizontal flow, vertical flow,choke flow,subrod pumping flow and multilayer injection according to the principle of nodal analysis. Examples have been investigated. The results indicate that the influences of inter well and inter formation can be studied to determine the optimum well working stations by using this method. It is suitable for reservoirs with more than two layers.