基于CFD的自进式喷嘴参数优化　　

CFD-based parameter optimization for self-propelled nozzle

王常斌 王敏 徐洋 魏巍

WANG Changbin WANG Min XU Yang WEI Wei

东北石油大学，黑龙江大庆　163318

Northeast Petroleum University, Daqing 163318, China

为了有效穿透井眼污染带，扩大泄油面积，提高油藏采收率，最终实现增产增注的目的。通过建立喷嘴三维模型，采用Fluent软件进行模拟，研究自进式喷头在不同前后喷嘴直径、前后喷嘴角度下的流场特性，利用流场中速度的分布规律结合公式计算出反冲力、破岩力、推进力的变化趋势。结果表明：随着后喷射角直径和前喷射角角度的增大，反冲力、推进力增大，破岩力减小；随着前喷射角直径和后喷射角度的增大，反冲力和推进力减小，破岩力增大。最终得到喷嘴的匹配方案，为实际生产提供了可靠依据。

In order to effectively penetrate borehole pollution belt and expand the drainage area, certain work was done to increase the oil recovery and ultimately realize the purpose of production and injection increasing. By building a three-dimensional model of the nozzle, with the help of simulation software Fluent, flow field characteristics of self-propelled nozzle was studied under the conditions of different nozzle diameter and different angle between fore and post nozzles. The trend of the recoil power, rock breaking power and propulsion power were calculated by combining flow field velocity distribution law with the relevant formula. The results show that with the increasing of post nozzle diameter and fore nozzle angle, the recoil power and propulsion power increase, and rock breaking power decreases; on the other hand, with the rising of fore nozzle diameter and post nozzle angle, the recoil power and rock breaking power decrease, and propulsion power increases. The matching program of nozzle obtained by above numerical simulation provides a reliable basis for the actual production.