Research on dew-point control technology and consumption reduction of associated gas in oilfield
In order to ensure that the water dew point and the hydrocarbon dew point meet the handover re-quirements after oilfield associated gas treatment,based on the review of various dew point control technolo-gies,the flow of triethylene glycol plus J-T valve has been set up through model,and the influence of chang-es in different key parameters on dew point and total energy consumption has been tested.Then on the basis of determining the optimization range,the continuous optimization of parameters has been completed.The dew point is checked by the phase diagram,the hydrate formation line and the temperature and pressure of pipe-line.The results show that when the temperature of associated gas temperature decreases,the circulation of lean liquid decreases,the temperature of reboiler decreases,the inlet temperature of rich liquid increases,and the temperature of J-T valve increases,the total energy consumption will be less and the energy conserva-tion effect of process will be better.After optimization,all process parameters are changed,and the total ener-gy consumption can be reduced from 568 kW to 526 kW with a decrease of 8.63%.Even more to the point,the hydrates and hydrocarbons haven't been formed in the process of dry gas transportation,which is in the safe operation stage.The research results can provide theoretical basis and practical reference for energy conserva-tion and emission reduction of oilfield associated gas treatment technology.
associated gaswater dew pointhydrocarbon dew pointreboiler temperaturerich liquid inlet temperature
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