摘要
通过流线模型和黑油模型模拟垂直裂缝压裂井的对比分析,指出了在黑油模型中运用网格放大技术模拟水力压裂垂直裂缝井生产动态存在的诸多缺陷,如网格取向严重、计算时间随网格数目增加而成倍增加、裂缝的存在增加模型的非均质性从而严重加大方程的求解难度,方程求解出现不收敛等。而运用流线模型在计算精度、速度和收敛性方面均较黑油模型有很大优势。并运用流线模型方法对大庆外围某油田垂直裂缝压裂井进行了缝长和缝内导流能力等参数的优化和生产动态预测,取得了较好的效果。
By comparing vertical fracturing well simulation with a streamline model and black oil model, it was pointed out that in simulation of vertical fracturing wells of hydraulic fracturing by using grid amplification there existed many drawbacks, such as grid orientation, calculating times doubled with the increase of grid number, the heterogeneity of model increased as fracture existence, which resulted in difficulties of equation solution and convergence. While the streamline model has greater advantages than that of black oil model in calculation accuracy, velocity and convergence. The streamline model is used for optimizing the parameters of fractures and flow conductivity within the fractures and predicting the production performance in vertical fracturing wells of Daqing Oilfield and better result is achieved.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2007年第3期115-119,共5页
Journal of Oil and Gas Technology
基金
国家高科技研究发展计划(863)项目(2006AA06Z226)
关键词
流线模型
水力压裂
垂直裂缝
数值模拟
生产动态
streamline model
hydraulic fracture
vertical fracture
numerical simulation
production performance