Cemented carbide nozzle cleaning tube well tool for prolonging wear resistance and reducing pressure attenuation
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.
new energygeothermal energyengineering technologytubed wellwell clean-upnozzlewear resistance timepressure attenuation
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维普
