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一个油藏原油采收率的高低既和该油藏的地质条件有关,又和现有的开发采油工艺水平有关。随着开发工艺技术的不断提高,原油采收率也必将随之增加。目前,世界普遍采用注水开发油田,也就是处在二次采油阶段,其采收率不高,就连技术先进的国家其原油采收率也仅仅达到45%-50%,仍有近50%-60%的原油埋藏在地下采不出来,如何挖掘这一巨大资源,已引起全世界的关注和探求。于是原油采收率技术继续向前发展并将导向必然的趋势—三次采油(即聚合物驱油技术)。
The level of oil recovery in a reservoir is both related to the geological conditions of the reservoir and to the level of existing exploration and production processes. With the development of technology continues to improve, the recovery rate of crude oil will also increase. At present, the world generally uses water injection to develop oilfields, that is, in the secondary oil recovery stage, the recovery rate is not high. Even in the advanced countries, the crude oil recovery rate has only reached 45% -50%, with nearly 50% -60% of the crude oil buried in the ground can not be harvested, how to tap this huge resource has caused the world’s attention and exploration. As a result, the oil recovery technology continues to move forward and will lead the inevitable trend - tertiary recovery (polymer flooding).