南海LP-1-2油田酸化技术研究

The Research of Acidizing Technique for the South China Sea LP-1-2 Oilfield

LP-1-2油田是惠州凹陷内发育的一个披覆背斜构造,属深层致密砂岩、低渗透油气资源.受自身储层条件和工艺技术的制约,其采出程度低,生产成本高,无法进行经济有效的开采,需要采取合适的增孔增产措施.本文通过室内实验,配制满足酸化作业要求的DC-1复合酸体系.该体系通过采用爆燃压裂酸化复合增产技术,在现场应用中取得了明显的增产效果.

The LP-1-2 oil field is a drape anticline structure in the huizhou depression,which is a low porosity and low permeability reservoir.Due to the constraints of its own reservoir conditions and process technology,its recovery percent is low,and the production cost is high,so there is no economical and effective way for production.It is necessary to take appropriate measures to increase production.In this article,a compound acid system which could satisfy the requirement of acidizing treatment through laboratory experiment,named DC-1,is found.By adopting deflagration fracturing acidizing technology,the system has achieved obvious yield increase in the field application.