摘要
塔河油田奥陶系油藏储层非均质性极强，局部位置定容体发育。定容性油藏在开发过程中能量得不到及时补充，产量递减迅速。注水替油技术能有效提高该类油藏的采出程度。从油水关系角度分析了注水替油效果的影响因素，认为有效注水空间的大小决定了注水替油效果的好坏。针对注水替油无法继续开采井孔储层上方剩余油的现象，提出了侧钻和注N2作为注水替油后续增产措施，可以进一步提高采出程度。
The heterogeneity of Ordovician reservoirs in Tahe Oilfield is extremely serious, and the constant volume bodies are partially well-developed. During the development process of the kind of oil reservoirs, because the energy cant be supplemented in time, the production will be decreased rapidly. The technique of replacing oil by water - flooding can effectively enhance the recovery percent of reserves, so this paper analyzes the influencing factors of the above technique from the view of oil/water relationship. The results show that the effects are determined by the size of effective water injection space. In view of the phenomenon that the technique can not produce the remained oil in the upper oil reservoirs, sidetracking and N2 injection are proposed as the sequent stimulations ＇to further enhance the recovery percent of reserves.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2010年第6期121-125,共5页
Petroleum Geology & Oilfield Development in Daqing
基金
基金项目：国家“973”项目“碳酸盐岩缝洞型油藏开发基础研究”（2006cb202403）.
关键词
塔河油田
注水替油
有效注水空间
侧钻
注N2
Tahe Oilfield
replacing oil by water-flooding
effective water injection space
sidetracking
N2 injection
