正理庄高89-1区块CO_2混相驱参数优化数值模拟研究

Numerical simulation research on parameter optimization of CO_2 miscible flooding of Gao 89-1 Block in Zhenglizhuang Oilfield

为了确保高89-1区块CO2混相驱项目的顺利实施,依据该区块的精细油藏描述成果,在优化适于CO2混相驱模型基础上,建立了符合油藏地质特点的三维地质模型。在此基础上对开发指标进行计算,对五个参数(井网、开发方式、压力水平、注入量和采油速度)进行优化,并提出了推荐方案,预测采收率可达23.10%,比弹性开采方式提高15.16%。

In order to insure the successful implementation of CO2 miscible flooding project in Gao 89-1 block,an 3D model was built on the basis of reservoir geologic characters based on the results of fine reservoir description of Gao 89-1 block and the optimized model of CO2 injection.The numerical development indexes are calculated and the influence of five parameters（including well pattern,development method,pressure level,cumulative injection,and oil recovery rate） is optimized.The appropriate project commendatory in oil field application is presented at last,the oil recovery will reach to 23.10%,increasing by 15.16% than elastic exploitation.