考虑井筒摩阻的底水油藏水平井产能及合理参数

Horizontal well productivity calculation and parameters considering wellbore friction in bottom water reservoir

 汪益宁¹ 李洪² 曹淑慧¹ 倪军 3 肖伟¹ 王晖¹

中国兵器工业集团振华石油控股有限公司，北京　100031 中国地质大学（北京）能源学院，北京　100083 陕西延长石油（集团）有限责任公司研究院，陕西 西安　710075）

Zhenhua Oil Co. Ltd., CNIGC, Beijing 100031, China School of Energy Resources, China University of Geosciences, Beijing 100083, China Research Institute, Shaanxi Yanchang Petroleum (Group) Co. Ltd., Xi′an 710075, China)

 目前的底水油藏水平井产能公式大多未能同时考虑井筒摩阻和水平井避水高度的影响，导致模型的计算结果与实际不符。为了更准确地对底水油藏水平井产能进行评价，运用等值渗流阻力、势的叠加原理以及镜像反映等方法，推导出底水油藏水平井产能公式，并对水平井的合理参数优化进行研究。通过实例分析发现，该模型较以往的产能模型精度更高，结果更可靠，而采用理论模型和数值模拟相结合对水平井合理参数进行优化的方法更加合理，这对今后底水油藏水平井产能研究具有一定的指导意义。

 At present, most of horizontal well capacity formulas are not considering wellbore friction and height of water avoidance at the same time, which leads to a model calculation result that is not consistent with the actual value. In order to evaluate the horizontal well capacity in bottom water reservoir more accurately, the capacity formula for bottom water reservoir was deduced using equivalent filtration resistance, potential superposition principle, mirror image method, etc. The horizontal well parameters were optimized. The results show that the accuracy of capacity model in this paper is higher and the results are more reliable. the parameter optimization for horizontal well combining theoretical model and numerical simulation are more reasonable through example analysis. It has certain guiding significance for future research of horizontal well capacity in bottom water reservoir.

10.6056/dkyqt201603022