辽河油区地热资源评价及开发利用

Geothermal resources evaluation,development and utilization in Liaohe oilfield

辽河油田地热资源丰富,为开发利用地热资源,2005年探明矿区内地热资源总量8800×10^(8)m^(3),折合标煤340×10^(8)t。2006年首次钻探一口中深层地热井,取代原燃煤锅炉向油田职工供应生活热水,年外输水量80×10^(4)t,节约标煤1×10^(4)t。2008年新建6口地热井,满足矿区17×10^(4)m^(2)住宅供暖需求,年节约标煤0.6×10^(4)t。2020年把废弃油井改造成地热井,替代原水套炉为欢三联合站原油生产及站内采暖供热,年节省天然气931.5×10^(4)m^(3)。辽河油田经过近20 a的探索实践,在地热资源评价、开发利用方面积累了丰富的经验,形成5类关键技术,建成13个示范工程,走出一条成熟可行地热利用之路,对未来地热开发利用具有重要借鉴意义。

The Liaohe oilfield is abundant in geothermal resources.In order to develop and utilize geothermal resources,in 2005,it was found that the total amount of geothermal resources in the mining area was 8800×10^(8)m^(3)and equivalent of standard coal was 340×10^(8)t.In 2006,a medium-depth geothermal well was drilled for the first time,replacing the original coal-fired boiler to supply hot water to oilfield workers.The annual water output was 80×10^(4)t,saving 1×10^(4)t of standard coal.In 2008,the six new geothermal wells were built to meet the heating demand that involved in the residential building of 17×10^(4)m^(2)in the mining area,saving 0.6×10^(4)t of standard coal.In 2020,the abandoned oil wells were transformed into geothermal wells,replacing the original water jacket furnace,which supplies heating for crude oil production of Huansan combined station and the heat of the station,saving 931.5×10^(4)m^(3)of natural gas annually.After nearly 20 years of exploration and practice,Liaohe oilfield has accumulated rich experience in geothermal resource evaluation,development and utilization,formed five types of key technologies,completed 13 demonstration projects,and created a mature and feasible geothermal utilization road,which will be significant to geothermal development and utilization in future.