摘要
为了预测压裂井产能变化规律 ,为油井的优化设计和生产提供依据 ,提出了预测压裂井压后任意时间的向井流动态关系 ( IPR)方法。该方法首先用 Cinco典型曲线求出无因次压力 ;而后用描述压裂井系统非稳定流的扩散方程的通解求解出井底流压等于饱和压力下的油井产量 ,进而求出油井的生产指数 ;从而求解出油井的向井流动态关系。应用实例表明 ,所提出的方法可以预测压裂井的产能 ,还可以用于研究裂缝参数对产能的影响。
A method is presented to predict the inflow performance relationship (IPR) in a production well at any time after the well is fractured so as to know the rules of productivity changes and provide a basis to optimize well design and production In this method, dimensionless wellbore pressure is derived with Cinco's typical curves at first Under the condition of downhole flowing pressure equal to saturated pressure, the production rate of a fractured well is obtained with the general solution of the diffusion equation that describes a unsteady state flowing in the fractured well, thus its productivity index is obtained and the IPR of the well is found The case study shows that the method could be used to predict the productivity of the fractured well and to study the effect of fracture parameters on the productivity
出处
《江汉石油学院学报》
CSCD
北大核心
2000年第3期67-68,共2页
Journal of Jianghan Petroleum Institute
