摘要
对严重非均质油藏来说,由于层间渗透率级差大,注水开发后矛盾十分突出。文章针对这类油藏的特点,利用胡状油田岩心开展启动压力梯度实验,研究了不同渗透率岩心启动压力梯度随物性、压力的变化规律。并研究了不同渗透率组合启动压力影响吸水量规律,研制了胡状非均质油藏小层吸水的渗透率界限。现场应用表明,研究成果符合油藏的实际开发状况,能够满足生产的需要。
Due to the big permeability contrast between the beds in serious heterogeneous reservoir,Conflict stands out after waterflood development.Aiming at the kind of reservoir’characteristics,the article start-up pressure grads experiment is carried out by using Huzhuang core,and the start-up pressure grads’change rule of different permeability cores when the physical characteristics and pressure change is studied.The influence of start-up pressure on injection quantity under different permeability combination is researched and the permeability cutoff of water injection for HUZHUANG reservoir is obtained.The application in situ indicates that the research result is reasonable and can meet the need of development of the reservoir.
出处
《石油仪器》
2012年第3期49-51,9,共3页
Petroleum Instruments
关键词
非均质油藏
启动压力梯度
吸水指数
渗透率界限
heterogeneous reservoir
start-up pressure grads
injection index
permeability cutoff
