摘要
低渗透油藏由于储层低渗透和非均质性强的特点,提液难度较大。通过对北31油藏的研究认为,通过分注、调剖减小层间差异,提高压力保持程度,对于液量较低井采用压裂和提液,提高油井供液能力,对于特高含水井采取堵水和提液相结合控制含水比上升,创造条件满足油藏的提液要求。另外,选择合理时机,最大限度的提高采收率。在具体做法上依据油井生产特征,不同井采取不同的提液方式,低渗透油藏提液同样取得了好的效果。
Because of low permeability,reservoirs with low permeability and heterogeneity are vey hard to recover oil.Based on researches for Bei 31 Reservoir with low permeability and reservoir heterogeneity,different methods of increasing liquid output were adopted to increase the recovery and obtain a good result.For oil wells with lower liquid output,fracturing and increasing pumping were used to increase liquid output;for oil wells with high water cut,shutoff and increasing pumping were carried out to control watercut rise and increase output;for water wells,profile control,seperation injection and maitaining high formation pressure level were applied.The above technological applications in Bei 31 reservoir can greatly increase the recovery.
出处
《新疆石油天然气》
CAS
2010年第4期60-62,共3页
Xinjiang Oil & Gas
关键词
低渗透
油藏
动用状况
压力系统
提液
Low permeability
Reservoir
Layer producing conditions
Pressure system
Increasing liquid
