小型油田气CO_2回收利用技术探讨

Study of CO_2 Recycling Technology for Small Oilfield Gas

随着CO_2驱油技术在油田中的应用将越来越广泛,但产出气对环境和资源造成的压力也越来越大。小规模油田驱油产出气量偏少,且其中CO_2含量变化较快,寻找一种简单实用、经济的CO_2驱油产出气回收方法具有重要意义。介绍了国内外常用的几种CO_2回收技术,重点介绍了一种适合小型油田气CO_2回收利用技术。该技术既节省了原料费用,又回收甲烷流作为油田燃气,降低了运行成本,也符合CO_2减排要求,取得了取得环保与经济"双效益",值得推广。

As the CO_2 flooding technology is extensively applied in the oilfields,the extracted gas is also posing increasing stress on the environment and resources. Small oilfields,when flooded,produces less gas,and the CO_2 content varies very fast. It is important to identify a simple,practical,economical CO_2 flooding gas recycling method. Some of commonly used CO_2 recycling technologies domestically and internationally are presented,and a kind of CO_2 recycling technology for small oilfield gas is highlighted. The technology not only saves raw material cost,but also recovers methane flow as the oilfield fuel gas,which reduces the operating cost,and meets the CO_2 emission reduction requirements,which offers both environmental and economic benefits,and is worthwhile for promotion.