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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 oilfield development, water is injected into the reservoir through a special water injection well to maintain or restore the reservoir pressure so that the reservoir has a strong driving force to improve the recovery rate and recovery rate of the reservoir. However, Inadequate water injection seriously restricts the development of low permeability reservoirs. Due to the low permeability and low daily water injection, the formation energy is difficult to replenish. The conventional injection well with one well is difficult to be exploited and the economic benefit is low. In order to supplement the formation energy reasonably and prevent the formation deficit from damaging the reservoir, In the 88 blocks, a new process was adopted to reduce formation pollution and improve well injection and production well patterns, raising the output of 88 old wells and exploring the next step for the development of the Central China’s oil region.