摘要
调剖是高含水和特高含水开发后期油田的一项主要控水稳油技术。随着调剖轮次的增加,提高采收率效果呈现递减趋势。本文利用岩心流动装置进行了多轮次调剖物理模拟实验。实验表明,多轮次调剖可逐步降低高渗通道流动能力,启动或提高中、低渗透层流动能力,但相同工艺条件下,四-五轮次后,调剖效果明显降低。多轮次调剖中,小层启动压力与注入压力对多轮次调剖效果影响较大。
Profile control is one of the important methods for oil-field to water control and oil stable production at later period of high and super-high water cut stage.The effect of EOR decreases with the increase of number of profile control.The experimentation of multi-cycle profile control is evaluated by core flowing gradiometer in this paper.The experimental results indicate that multi-cycle profile control can progressively reduce seepage flow ability of high permeability reservoir,start or improve seepage flow ability of middle and low permeability reservoir.The effect of profile control will significantly decreased after four or five round at the same technological conditions.The effect is influenced by start-up pressure of reservoir and injection pressure for profile control.
出处
《内蒙古石油化工》
CAS
2011年第12期168-170,共3页
Inner Mongolia Petrochemical Industry
