摘要
水力压裂技术的发展具有很大的潜力,但是由于受到冲刷腐蚀的影响,压裂技术受到了限制。运用计算流体力学的方法,根据流体流动的规律,建立了节流器的流固两相冲刷腐蚀的数学模型,采用SIMPLE算法来解上述方程。结果表明,节流器的冲刷腐蚀主要发生在入口段和出口段,且入口段受到的冲刷腐蚀较严重。冲刷腐蚀对节流器的影响随入口压力和压裂液粘度的增大而变严重,随含砂量的变大而减轻。研究结果可为节流器的优化设计提供指导。
Hydraulic fracturing technique has great potential. Fracturing technology is limited because of the effect of erosion-corrosion. Using computational fluid hydrodynamics method, the mathematical model of liquid-solid for erosion-corrosion was established^based on laws of fluid flow. SIMPLE algorithm was used to solve the equation. The results show that erosion-corrosion of choke mainly occurred in the inlet and outlet sections. Erosion-corrosion of inlet section was more serious. The effect of erosion-corrosion increased with the increase of inlet pressure and viscosity of fracturing fluid. The results can provide guidance to the optimum design of choke.
出处
《腐蚀与防护》
CAS
北大核心
2012年第9期737-739,共3页
Corrosion & Protection
基金
国家自然科学基金(No.50771053)
关键词
节流器
剪切应力
冲刷腐蚀
数值计算
choke
shear stress
erosion-corrosion
numerical calculation
