油藏－井筒系统数值计算模型及应用

NUMERICAL SIMULATION MODEL FOR RESERVOIR-WELLBORE SYSTEM

把黑油模型和单井井筒内的举升公式以及流入动态曲线结合起来，作为一个总的模型来分析整个油藏和各个注采井的生产动态，并利用黑油模型求解在三相条件下的日产液量与流压的关系．该模型将节点分析方法推广到注采井，拓宽了其应用范围．在黑油模型的井点计算中，采用了沃格尔方程，克服了一般黑油模型不能描述井筒附近脱气产生的气阻现象，使油井产量的计算更精确．

A numerical simulation model for reservoir-wellbore system is presented with consider-ation of a complete process from reservoir to wellbore. The model pressure was calculated by using nu-merical solution, By the use of this model the reasonable reservoir pressure, well-head pressure for in-jection well,production life of flowing well and preduction rate of the pumping well can be predicted. At the same time,the optmum injection well pattern can be chcoen. This model includes black oil sim-ulation and wellbore model.The black oil simulation dascribes the fluid flow in the reservoir.THe wellbore model includes injection well model,multiphase flow in the vertical pipe and pumping well model.By the model recursive method and two- point method were used to search the cooperation point. Vogel equation was used to calculate gas resistance phenomena near the wellbore.