斜井试井分析方法研究

针对上下边界封闭或定压的水平方向无界的板状油藏中,斜井试井解释数值积分计算量大、实用性差的问题,在Ozkan等人的研究基础上,提出了一种实用的计算斜井压力响应的方法,计算效率提高一个数量级.同时还提出了一个求等价压力点的理论公式及其实用算法.这两种算法都通过理论模型和实测资料进行了验证,解决了斜井试井分析方法实际应用的关键问题.

Study on the analytic method for the well testing of deflecting wells

To the tubular reservoirs with enclosed top and bottle boundaries or with constant pressure and non-boundary in horizontal direction,the numerical integration calculation quantity of deflecting well testing interpretation is great,and the numerical integration calculation is not practical.On the basis of the research of Ozkan,et al,a practical method for calculating the pressure response of deflecting wells is put forward,and its calculating efficiency is 10 times higher than that of the numerical integration calculation.The theoretical formula for solving equivalent pressure point and its practical algorithm are also put forward.The deflecting well pressure response calculation method and the deflecting well equivalent pressure point calculation method are verified by theoretical models and practical data.The study result solves the key problems in the applications of the analytic methods for deflecting well testing.