摘要
在大庆油田特低渗透油层、表外储层及断块低渗透油层3类不同油藏中开展了超小微生物解堵增产现场试验,试验所用的超小微生物采用营养缺陷法培养,菌体尺寸控制在0.5μm内。利用对营养物质比较敏感的超小微生物进入油层中,达到近井地带解堵增产的目的。现场试验17口井,累计增油超过2 630 t,有效率达76.4%,作用期6个月以上。
The field tests of releasing plug and increasing output with ultra-small microbacteria were carried out in three kinds of reservoirs,extra-low permeability reservoirs,untabulated reservoirs,and fault-block low permeability reservoirs,of Daqing oilfield.The ultra-small microbacteria were nutritional deficient stains which sizes were controIled smaller than 0.5 mm.The plug was removed and the output was increased after the microbacteria were injected into reservoirs.The releasing plug technology was tested in 17 wells.The cu- mulative increment of the oil production was more than 2 630 t.Its effective rate was 76.4% and effective pe- riod was longer than 6 months.
出处
《精细石油化工进展》
CAS
2008年第12期6-9,共4页
Advances in Fine Petrochemicals
关键词
低渗透油藏
超小微生物
营养缺陷法培养
微生物采油技术
low permeability reservoir
ultra-small microbacteria
nutritional deficiency cuhure
microbial oil production technology
