非均质性砂岩油藏周期不稳定注水技术研究

摘要

周期不稳定注水技术作为稳油控水的一种手段已经在各油田被广泛应用,然而针对不同的地层发育条件或采用不同的周期注水方式,所取得的效果都是不同的.因此,针对延长油田非均质性油藏储层的物性和地质特征,阐述了延长油田非均质性油藏周期注水的动力学机理,分析各种因素对延长油田非均质性油藏周期注水的影响,以便针对延长油田特低渗油藏注水开发过程,选出更加适合周期注水区块和更加适宜的周期注水工作模式,提高油田开发效果.%Cycle-unstable water-injection technology has been widely used in various oilfields as a means of stabilizing oil and water control.However,the effects achieved by different stratigraphic development conditions or different periodic water injection methods are different.Therefore,in order to extend the physical and geological characteristics of reservoirs in heterogeneous reservoirs, this paper expounds the dynamic mechanism of prolonged oil injection in heterogeneous reservoirs,and analyzes various factors to extend oilfield heterogeneous reservoirs.The effect of periodic water injection,in order to extend the water injection development process of the ultra-low permeability reservoir in the extended oil field,select a more suitable cycle water injection block and a more suitable cycle water injection work mode to improve the oilfield development effect.