三元复合驱技术的研究进展

Research Progress of ASP Flooding Technology

随着开采的不断进行,在地下仍有近50%的原油储量未被开采,剩余原油含水率越来越大,开采越来越复杂。为了应对复杂的地形环境,提高经济效益,提高开采效率,三元复合驱技术(碱、聚合物、表面活性剂)应运而生,又因注入碱的不同分为强碱三元复合驱和弱碱三元复合驱,两种驱油方式各自具有不同的优缺点,其弊害也有行之有效的处理办法。在三元复合驱的实际应用中,将优势井型和优势驱油技术相结合的手段极大地发挥了其优势,大大提高了开采效率近20%以上。

As oilfield development continues, nearly 50% of the crude oil reserves remain unexploited underground reservoir, the remaining crude oil has high water content, and the production is becoming more and more complex. In order to cope with the complex terrain environment, improve economic benefits and improve development efficiency, the ASP flooding technology(alkali, polymer, surfactant) came into being, and it is divided into strong alkali ASP flooding and weak alkali ASP flooding. In the ASP flooding, the two oil displacement methods have their own advantages and disadvantages. In the practical application of ternary compound flooding, the combination of superior well type and superior flooding technology has greatly exerted its advantages, which can greatly improve the recovery efficiency by more than 20%.