摘要
对于底部注水、纵向上非均质性较严重的低渗透油藏，采用分层、局部网格加密方法，利用三维三相黑油模型，考虑水力裂缝对注水状况的影响，使水力裂缝与油藏模拟紧密结合起来，对该类油藏不规则井网进行不同情况下的注水量的模拟。主要进行了５个方面的模拟：①夹层对注水量影响；②不同渗透率条件下的日注水量变化；③不同有效厚度条件下的日注水量变化；④不同压差下的日注水量变化⑤水力压裂裂缝长度的优化。模拟的结果真实反映了油藏地下采注状况，与压裂后实际增注的情况相符。
Considering the properties of low permeability ultra deep reservoirs with
bottom water, which are strongly heterogeneous in vertical, a 3D, 3P black oil simulator was
used to simulate the water injection rate on the condition of irregular well pattern by local grid
refinement and taking account of the effect of hydraulic fracturing on water injectivity. Five kinds
of simulation were run mainly, which are: the effect of intermediate layer on water injection rate;
the change of daily water injection rate on the condition of varying permeability; the change of
daily water injection rate on the condition of varying effective thickness pay zones; the change
of daily water injection rate on the condition of varying pressure difference; and the optimization
of hydraulic fracture length. The results have reflected the state of subsurface
injectionproduction of reservoir, and matched well with the condition of water injection after
fracturing treatment.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1999年第3期76-79,共4页
Petroleum Exploration and Development
关键词
低渗透油藏
压裂增注
油藏模拟
Reservoir simulation, Fracturing, Injection increase, Bottom,
Water injection, Heterogeneous, Ultra deep well
