摘要
用三维三相全组份对低渗透油田水力压裂垂直缝井的自然能量衰竭式开采过程进行了预测 ,并与不压裂的自然能量衰竭式开采过程进行了比较。结果表明 ,考察水力压裂垂直缝增产效果应从考察井的瞬时产量的变化和考察动态生产过程两个方面进行 ,水力压裂垂直缝在前期提高了井的产量 ,随着时间的推移其效果逐渐减弱至消失 ,这不仅是传统上认为的裂缝闭合造成的结果 ,而且是因为改变了渗流场造成的 ;水力压裂垂直缝提高了开采速度 ,但对采收率的影响微乎其微 ,文中利用物质平衡方法对其进行了详细分析。
The hydraulic fracturing is a common technique for improving the product ivity of low permeability fields.Stimulation multiple methods commonly used to e valuate the incremental effect is a static method,and is unable to take the time affection on the production process into consideration.Some researchers studied the effect of hydraulic fracturing by the numeric method of dimensionless equat ion.This article predicts the natural depletion process of low permeability wells with the vertical fracture o f hydraufrac,and correlate to the natural producing process of the non fracture d wells by using 3D 3P full compositional simulation.it shows that the incremen tal effect of the hydraufrac vertical fracture should be considered,and the prod ucing process and the production changes behaviorally and timely.The hydraufrac verti cal fracture increased the well production only in early period.This is not only due to the affection of traditionally considered the fracture closing,but also because of the changed percolation zone;the hydraufrac vertical fracture im proves the recovery rate,but affects the recovery weakly.It’s analysis is given with material balance method. WTHZ
出处
《断块油气田》
CAS
2000年第2期26-28,共3页
Fault-Block Oil & Gas Field
关键词
水力压裂
油藏数值模拟
低渗透油田
压裂效果
Hydraulic fracturing,Fracture,Reservoir numerical simulat ion,Low permeability.
