In order to improve the working efficiency of nozzle jet cleaning device for tubed well clean-out,the influence of nozzle material and structure on wear time and manufacturing cost is studied.Through literature research,based on the analysis of the overall performance of stainless steel,carbide,and ceramic nozzles,the carbide nozzle is optimum.A new wear-resistant structure carbide nozzle with free assembly is designed.Furthermore,the comparison test on wear performance of the stainless steel nozzle and the carbide nozzle is carried out.The jet strike force attenuation of stainless steel nozzle reaches 40%at the wear time of 12 h,while the jet strike force attenuation of carbide nozzle is only 8%after wear time of 100 h.The nozzle wear resistance is improved by adjusting the proportion of tungsten element,the wear resistance time of the new nozzle is increased by more than 7 times compared to the traditional stainless steel nozzle.Redesigned nozzle internal structure reduces the energy loss of water jet,and the pressure decay is reduced by 8%compared with the traditional stainless steel nozzle.The new nozzle is splitted in terms of structure and can be combined with the general nozzle for various jet generators,and the production materials are relatively reduced by 87.6%compared to the stainless steel nozzle.This new wear-resistant nozzle provides technical support to improve the clean-out efficiency of jet flow in conventional tubed wells.
关键词
新能源/地热能/工程技术/管井/洗井/喷嘴/抗磨损时间/压力衰减
Key words
new energy/geothermal energy/engineering technology/tubed well/well clean-up/nozzle/wear resistance time/pressure attenuation
维普
万方数据