文88块老井注水见成效

Water Injection Development Effect of Old Wells in Wen 88 Block

在油田开发过程中,通过专门的注水井将水注入油藏,保持或恢复油层压力,使油藏有较强的驱动力,以提高油藏的开采速度和采收率,但是注不进、注不够水严重制约低渗油藏开发效果。由于渗透率低,水井日注水量少,地层能量难以补充,常规的一注一采井网开发油井见效困难,经济效益低,为合理补充地层能量,防止地层亏空过大伤害储层,在文88块中采取了新工艺,减少地层污染,完善注采井网,提高了文88块老井产量,为中原油区下步开发摸索思路。

In the process of oiIfield development, in order to improve reservoir recovery rate and oil recovery, specialized injection wells are used to inject water to maintain or restore the reservoir pressure which can make the reservoir have a strong driving lbrce. But injection imbalance seriously restrains low permeability reservoir development. Because of the low permeability, less daily water injection rate, it is hard to complement the formation energy, conventional injection-production well spacing has poor effect in the well development,which can lead to low economic benefits. In order to reasonably complement formation energy to prevent the oversize damage of formation, a new technique has used in Wen88 block, which can reduce the pollution of the formation, perfect injection-production well spacing, and increase the production of old wells in Wen 88 block.