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在新墨西哥州Lea县EuniceMonument南单元的一个碳酸盐油层 ,设计和矿场实施了一种连续注入微生物孢子和营养物的微生物调剖方法。室内研究包括微生物在地层水中的存活能力、营养物的优化选择、孢子和营养物的注入浓度及注入体积等。矿场试验采用 80acre反五点井网。中心注入井处理前注入剖面表明存在两个贼层 ,分别占注水量的 42 %和 5 8%。矿场试验时 ,共注入了 1 6 0 0 0bbl浓度为 1〔1 0 8cfu/mL (colonyformingunitpermL)的孢子悬浮液 ,为期 1 6天 ,随后又注入 1 40 0 0bbl营养液。结果显示 ,微生物处理前在井口注水压力为 30lb/in2 时 ,注水量为 1 0 0 0bbl/d ,而处理后在井口注水压力变为6 5 0lb/in2 时 ,注水量为 5 0 0lb/in2 。处理后 ,一些注入剖面维持了八个月 ,这表明注入流体已转向 ,原位生成了稳定的生物膜。
A carbonate reservoir, design and mine at the Eunice Monograph South Unit in Lea County, New Mexico implemented a microbial profile control method that continuously injects microbial spores and nutrients. Laboratory studies include the viability of microorganisms in formation water, the optimal choice of nutrients, the concentration of injected spores and nutrients, and the volume injected. Mine test using 80acre anti-five well pattern. The injection profile of the central injection well before treatment shows that there are two thief layers, accounting for 42% and 58% of the water injection, respectively. In the field test, a total of 16 0 0 bbl of spore suspension with a concentration of 1 [108 cfu / mL (colonyformingunitpermL) was injected for a period of 16 days, followed by a further infusions of 40,000 bbl. The results showed that the water injection rate was 10 000bbl / d when the water injection pressure was 30lb / in2 at the wellhead before microbial treatment, and the water injection rate was 5 0lb / in2 when the water injection pressure at the wellhead was changed to 650lb / in2 . After treatment, some of the injection profiles were maintained for eight months, indicating that the injection fluid had turned to generate a stable biofilm in situ.