Field test and effect evaluation of downhole atomization technology in Dongsheng gas field
Gas production is greatly reduced by liquid accumulation in the late stage of gas wells,and even leads to water flooding and production stoppage in severe cases.Therefore,it is necessary to select appropri-ate and effective drainage gas production technology to ensure stable gas production.Downhole atomized drainage gas production is a new drainage gas production technology.Through the design of device struc-ture,the fluid mechanics numerical simulation and field test are carried out for the device.The research re-sults show that the atomized drainage gas production device can transfer the gas-liquid two-phase into a mist flow,and the atomization effect is better with the increase of inlet velocity and gas-liquid ratio.Field pilot experiments show that when the equivalent diameter method is used to set the pressure drop of the neb-ulizer tool to the pressure drop of the throttle,the effect of atomizing drainage and gas recovery before and after the nebulizer operation is obvious,the fluctuation degree of instantaneous gas production is greatly re-duced,the oil pressure,casing pressure,gas production and liquid production of the gas well are more sta-ble,the gas-liquid ratio is reduced,and the effect of drainage and gas recovery is improved,which is con-ducive to the stable gas production,and the effectiveness of the process was verified.
Dongsheng gas fieldwellbore fluid accumulationdownhole atomizationdrainage gas produc-tion technology
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维普
