蒸汽驱地面混输系统能量综合利用分析

辽河油田大部分稠油主力区块已进入蒸汽吞吐后期开发阶段,为了提高稠油油藏采收率,保持产量觃模的稳定,采用向地下注入大量蒸汽提高油层温度的蒸汽气驱方法来开采原油;初步预测最高温度可达到150℃,如何利用高温采出液所携带的能量成为蒸汽驱开采石油问题的关键所在。高温采出液可在井口、计量站和联合站三个地方换热来回收能量,如何确定那种换热方式使热能回收率最大化?通过计算在井口、计量站和联合站三种换热方式的效率方法来进行比较,得出在联合站换热效率最大为85%;同时,在联合站换热投资最小,为辽河油田进行蒸汽驱开发提供技术支撑。

Analysis on EnergyComprehensive Utilization of Ground Mixed Transportation SystemforSteam Flooding

Most of the main blocks of heavy oil in Liaohe oilfield has entered the late stage of steam soaking development, in order to enhance heavy oil recovery and maintain the stability of the scale production, a large number of steam injectionwasusedto increase underground reservoir temperatureforexploitation of crude oil;Preliminary forecast of the maximum temperature can reach 150℃, how to usethe energy carried byhightemperature produced fluidhas become a keyto the steamdriving oil recovery.The energy carried byhightemperature producedfluidcanbe recovered atwell heads,metering stations and combination stations.Inorderto determinethesuitableenergyrecovery way,energy efficiencies ofthree kinds of heat transfer methodsat thewell heads, themetering stations andthe combination stationswerecalculated andcompared.Theresults show thatthe energy efficiencyof theheat transfer methodatthe combination stationis themaximum, about85%; meanwhile, investmentofthemethodis thelowest, and themethod canprovide technicalsupportforLiaohe oil fielddevelopment bysteam flooding.