关于水平井产量公式的讨论与分析

Discussion and Analysis about Horizontal Well Productivity Formulas

介绍了水平井稳态产量公式的推导思路与推导过程,根据水平井的渗流场特征,对常用的水平井产量公式(Borisov公式、Giger公式、Joshi公式、Renard-Dupuy公式)进行了对比分析。通过分析发现,水平井产量公式在推导过程中存在疏漏,应予以修正。通过实例计算,证明了修正后的水平井产量公式与Borisov公式、Giger公式、Renard-Dupuy公式等在计算结果上有很好的一致性,实现了水平井产量公式在形式上的统一。

This paper introduces the deducing ideas and processes of steady-state productivity formulas for horizontal wells,and comparesthe commonly used formulas. Through the analysis,it is indicated that there are loopholes in the process of deducing the productivity formu-las for horizontal wells,which should be corrected. There are little differences among the modified formula,Borisov＇s formula,and Renard-Dupuy＇s formula in the calculation results,thus providng the validity and practicability of the modified formula,and realizing the unifica-tion of productivity formulas for horizontal wells in form.