大港低渗透油藏井网优化研究初探

Simple Discussions of Optimum Research in Well Net in Low Leakage Oil Reservoir in DAGANG Oilfield

低渗透油藏井网部署的好坏直接影响到开发的成败。在调研国内低渗透油藏井网设计模式演变的基础上,采用油藏数值模拟软件,对比分析基础井网开发效果,优选出开发指标较好的优势井网。在此基础上,对人工裂缝参数进行优化,对不同的缝网组合方案进行预测,对比优选出最优的人工压裂缝条数、长度、位置、导流能力等参数,从而达到缝网的最优组合。低渗透油藏井网优化研究在大港油田部分低渗透区块展开现场实施,取得了初步效果。

The arrangement of well pattern directly affects the success of development in low permeability reservoirs. Based on the study of well pattern design modes evolution in domestic, and using numerical simulation software to contrast and analyze the development effect of the basic well pattern. We can get the advantageous well pattern with good development index. Then we optimize the parameters of artificial fracture. Through forecasting the different combinations of the well pattern and artificial fracture, we can contrast and optimize the best factors： the number of fractures, crack length, crack location and fracture conductivity. At last we achieve the optimum combination of the well pattern and fracture parameters. Well pattern optimization research of low permeability reservoir has been applied in Dagang oilfield with preliminary effects.