基于多目标粒子群算法的分层注聚流线型阀芯结构优化  

Structural Optimization of Streamlined Valve Core in Layered Polymer Injection Based on Multi-Objective Particle Swarm Optimization Algorithm

作　　者：张仕帆 贾德利[2] 龚斌 ZHANG Shifan;JIA Deli;GONG Bin(School of Future Technology,China University of Geosciences,Wuhan 430074,China;PetroChina Research Institute of Petroleum Exploration&Development,Beijing 100083,China;Key Laboratory of Theory and Technology of Petroleum Exploration and Development in Hubei Province,China University of Geosciences,Wuhan 430074,China)

机构地区：[1]中国地质大学(武汉)未来技术学院,武汉430074 [2]中国石油勘探开发研究院,北京100083 [3]中国地质大学油气勘探开发理论与技术湖北省重点实验室,武汉430074

出　　处：《石油矿场机械》2025年第2期46-56,共11页Oil Field Equipment

基　　金：国家重点研发计划项目“地质资源精准开发风险预测的大数据智能分析技术及平台建设”(2022YFF0801200);国家自然科学基金面上项目“大数据驱动下的老油田水驱精细分析方法研究”(52074345);中国石油天然气集团有限公司科学研究与技术开发项目“智能分层注采工程技术研究”(2021ZG12)。

摘　　要：在分层注聚过程中,满足分层配压的同时降低聚合物溶液的黏度损失,是困扰配注器节流阀芯结构优化设计的难题。以流线形阀芯为研究对象,通过数值模拟验证了流线形阀芯的调压与黏损机理。以节流压差与平均剪切速率为性能指标,采用Plackett-Burman试验分析结构因素的显著性,利用响应面法构建其与响应值的回归模型。结合多目标粒子群优化算法和熵权法,确定了流线形阀芯的最优结构参数。研究结果表明,外径、槽间距和后槽间角是影响节流压差和平均剪切速率的显著因素。节流压差和平均剪切速率的指标权重分别为0.5022和0.4978。优化后流线形阀芯的外径为18 mm、槽间距为12 mm、前槽间角为35°以及后槽间角为45°,对应的节流压差和平均剪切速率分别为45.68 kPa和1731.32 s^(-1)。与优化前相比,节流压差提高2.33%,平均剪切速率降低1.87%,流线形阀芯的应用性能得到提高。研究成果为提升分层注聚技术中配注装置的应用性能提供了理论支撑,有助于推动油田的高效开发。Meeting the requirements of layered pressure distribution while reducing the viscosity loss of the polymer solution is a bottleneck problem that plagues the optimal design of streamlined valve core structures in layered polymer injection. The pressure control and viscosity loss mechanism of the streamlined valve core was verified by numerical simulation. The throttling pressure difference and average shear rate were used as performance indicators, the Plackett-Burman test was used to analyze the significance of structural factors, and the response surface method was used to construct a regression model between them and the response value. The optimal structural parameters of the valve core were determined by combining the multi-objective particle swarm optimization algorithm and the entropy weight method. The results show that the outer diameter, groove spacing, and back groove angle are significant factors affecting the throttling pressure difference and average shear rate. The index weights of throttling pressure difference and average shear rate are 0.502 2 and 0.497 8, respectively. After optimization, the outer diameter is 18 mm, the groove pitch is 12 mm, the front groove angle is 35°, and the rear groove angle is 45° of the streamlined valve core. The corresponding throttling pressure difference and average shear rate are 45.68 kPa and 1 731.32 s^(-1), respectively. Compared with before optimization, the throttling pressure difference increases by 2.33% and the average shear rate decreases by 1.87%. The overall application performance of the valve core is improved. The research results provide theoretical support for improving the application performance of injection devices in layered polymer injection and promote the efficient development of oil fields.

关 键 词：分层注聚 流线形阀芯 结构优化 响应面法 多目标粒子群优化算法 

分 类 号：TE934.1[石油与天然气工程—石油机械设备]