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预测溶解气驱油藏中水平井或斜井的流入动态关系的简单分析方法。尽管有关油藏中垂直井两相流入动态描述的文章有许多,但只有几篇论文对斜井或水平并的描述是相同的。最近的两篇研究论文沿用Vogel曲线方法得到了水平井的经验关系,这种方法是沃格尔应用数值模拟垂直井井底流压与产量的关系建立的。这种状况表明使用这种关系评估绝对无阻流量(AOFP)是困难的,尤其是当缺乏矿场资料时限制了上述关系的应用。可以证明一旦绝对无阻流量或最大产油量能够估计出来。那么最初为垂直井提出的Vogel和Fetkovich关系式就能用于描述任何方向井的IPR曲线。同样。用于一口垂直井未来IPR预测方法也适用于不同方位的油井。绝对无阻流量可通过应用不同外边界条件水平井的任意采油指数表达式而得到计算。对于斜井,可以应用Cinco等人的公式计算有效井简半径和油井的采油指数。综合实例用来说明所提出方法在计算一口斜井IPR的应用情况。另一方面,油田实例也说明了这种方法在水平井中的适应性。
A simple analysis method for predicting the dynamic inflow of horizontal wells or inclined wells in dissolved gas flooding reservoirs. Although there are many articles on the dynamic description of the two-phase inflow of vertical wells in oil reservoirs, only a few papers describe the same for inclined wells or horizontal wells. Two recent papers have used Vogel curve method to get the empirical correlation of horizontal wells. This method was established by Vogel in the numerical simulation of the relationship between vertical well bottom pressure and production. This situation shows that using this relationship to assess absolute unobstructed flow (AOFP) is difficult, especially in the absence of field data that limits the application of these relationships. It can be shown that once the absolute unobstructed flow or the maximum oil production can be estimated. Then the Vogel and Fetkovich relations originally proposed for vertical wells can be used to describe the IPR curves for any directional well. same. Future IPR prediction methods for a vertical well also apply to wells of different orientations. Absolute unobstructed flow can be calculated by applying arbitrary production index expressions for horizontal wells with different outer boundary conditions. For inclined wells, Cinco et al’s formula can be used to calculate the effective well radius and the oil well production index. The comprehensive example is used to illustrate the application of the proposed method in calculating an inclined well IPR. On the other hand, oilfield examples also illustrate the applicability of this method in horizontal wells.