水平井稳态产能公式对比与分析

Analysis and correlation of steady-state productivity formulas for horizontal wells

近年来,水平井稳态产能理论研究日趋成熟,不同求解方法下的水平井稳态产能公式应运而生,但并不是每个产能公式均适用于所有类型油藏中水平井产能的预测,合理选择产能公式至关重要。以水平井稳态产能公式研究过程中的拟三维方法、保角变换法以及其他相关方法为基础,对国内外学者关于水平井稳态产能分析理论的研究进展进行了综述,并结合实例分析了各水平井稳态产能公式在已知油藏中的适用性。分析表明,Borisov公式(郎兆新公式)、Giger公式、Renard-Dupuy公式(郭肖公式与李真祥公式)、Fuirui公式以及陈元千公式适用性较强。该研究为油藏开发过程中合理选择水平井产能公式提供了理论依据。

In the latest years, the studies on steady-state productivity theory for horizontal wells are more and more mature. Steady-state productivity formulas for horizontal wells in different methods emerge as the times require, but not all of the formulas can be used to predict the productivity of horizontal well accurately, so the logical choice of productivity formula is of great importance. Based on the pseudo-three-dimensional method, conformal mapping method and other related methods, this paper summarized the research progress of productivity theory for conventional horizontal wells all over the world, and made an applicability analysis of all the formulas by examples. The analysis result shows that if the reservoir type is the same with that shown in this paper, the formulas of Borisov （Lang Zhaoxin）, Giger, Renard-Dupuy （Guo Xiao and Li Zhenxiang）, Fuirui and Chen Yuanqian are practical in predicting theproductivity in the field. The study can provide theoretical basis for choosing formula in reservoir development reasonably.