摘要
报道了采油微生物CJF-002的有关特性及在低温的(30℃)吉林扶余油田的应用。该菌为杆菌属,可在温度15—37℃,pH值5.4—9.0条件下生长,最适生长条件为温度30℃,pH值6.5—7.5;在糖蜜培养基中24小时产多聚糖50—70μg/mL,厌氧条件下产量较高;与原生菌竞争生长能力很强。注入菌及所产多聚糖沿人造石英砂长度的分布表明菌液注入性良好。并联双岩心注入实验和微观仿真模型驱油实验结果表明,该菌产生的多聚糖可封堵水流大通道,增黏注入水,提高驱油效率。在扶余油田东区已进行6次CJF-002菌驱油试验。报道了2007年东12-3区块3注21采试驱区的良好驱油结果:列表给出了注菌前后一口注水井的吸水剖面数据,一口采油井的产液剖面数据,由示踪剂检测数据计算的7口采油井地层参数和波及体积数据;还列表给出了注菌前后5口井采出原油组成和性质的改变,即胶质沥青质含量大幅降低,凝固点降低,密度升高,认为是波及区域扩大的结果。
The performance properties of microbes CJF-002 for MEOR and their uses in low temperature（30℃ ） Fuyu oil field,Jilin, were presented. Microbes CJF-002 were of Enterobacter spp, could grow at temperatures 15--37℃ and pH 5.4---9. 0 with the most favorable growth conditions of 30℃ and pH 6.5--7.5. In a molasses culture medium, CJF-002 produced 50--70/μg polysaccharides per mL in 24 hrs and the polysaecharides production was higher under anaerobic conditions. CJF-002 possessed strong competitive ability with indigeneous reservoir bacteria. The injectivity of the bacterial culture was good as shown by the distribution of CJF-002 and the produced polysaccharides along injection stream in artificial cores. In an injecting experiment on paralell double cores and a simulation mieromodel oil displacing experiment, the plugging of water passages, the viscosifying of injected water, and the enhancement continued from p. 194 ）of oil recovery by the polysaccharides produced by CJF-002 were demonstated or evidenced.Totally six MEOR projects using microbes CJF-002 were conducted in the east district of Fuyu. The satisfactory field results of MEOR project in the experimental area E12-3,covering 3 injection and 21 production wells, conducted in 2007 were presented in 3 tables： the changes in water injectivity profile for one well; productivity profile for one well ; and reservoir physical characteristics and sweeping volume for 7 production wells obtained by interwell tracering analysis meanwhile the data of composition and properties of crude oil recovered from 5 wells expressing significant drop down of asphaltene/resin content, pour point depression, and density raise were presented and explained as a result of enlargement of sweeping zones.
出处
《油田化学》
CAS
CSCD
北大核心
2009年第2期191-194,203,共5页
Oilfield Chemistry
关键词
采油菌
产生物聚合物菌
油藏适应性
注入性
驱油机理
深部调剖
微生物提高采收率
低温油藏
吉林扶余油田
bacteria （ microbes）for MEOR
biopolymer producing bacteria
reservoir adapdability
injectivity
oil displacement mechanisms
indepth profile modification（ relative permeability modification）
microbial enhanced oil recovery（MEOR）
low temperature oil reservoir
Fuyu oil field in Jilin
