低油价条件下CCUS的经济适用性评价

Evaluation of Economic Applicability of CCUS under Low Oil Price

目前用于油田驱油的CO_(2)气源主要来自于天然气藏和碳捕集。其中,碳捕集驱油的投入成本较高,且由于煤化工企业与油田距离相对较远,运输成本也较高。通过对CO_(2)捕集成本、运输成本、驱油成本、增油效益等方面的分析评价,建立了一种CO_(2)捕集驱油的经济评价方法,并以此评价低油价条件下CO_(2)捕集、利用和封存(CCUS)技术的经济适用性。同时,以南京化学工业有限公司工业尾气回收所得CO_(2)用于苏北油田驱油为例,对苏北油田工业尾气CO_(2)驱油技术开展了经济性评价。

Nowadays,EOR by CO_(2) flooding is widely used in most oil fields in China.CO_(2) is mainly obtained from natural and capture.Among them,carbon capture costs high.The invested cost of purchasing captured CO_(2) for oil field flooding are very high,and that the coal chemical companies are far away from oil fields increases the transportation costs.By analysis and evaluation of the capture cost,transportation cost,displacement cost and oil increase benefit of CO_(2),an economic evaluation method was established,and was used to evaluate the economic applicability of CCUS under the condition of low oil price.Meanwhile,capture of CO_(2) industrial exhaust gas for oil flooding in North Jiangsu Oilfield by Nanjing Chemical Industry Co.,Ltd.was took as an example to evaluate its economy.