【摘要】 <正> 注水是广泛应用的有效采油工艺。在注入水、含油层和地层水中存在着各种微生物。注入的淡水将地层水冲淡,同时带进了微生物和其它物质,加强了微生物在地层中的活动。这是引起注水层堵塞和采油设备腐蚀的重要因素。因此,油层注水后,细菌发育状况的研究不仅具有理论意义,也具有重要的实践价值,早就引起了注意(Beerstecher,1954;Davis,1967;更多还原

【Abstract】 The Activity of sulphate reducers, saprophytes and liquid paraffin oxidizers in water samples from water sources and watered oil horizon L of Laojunmiao oil field was examined. Their major activity,especially that of sulphate reducers, takes place in the bottom hole zones of injected wells. One ml of the stratum water was found to contain hundreds thausands to millions of sulphate reducers in some cases. The max. content of H2S is about 120mg/L. The active development zones of bacteria were calculated to be about 5.4 to 9.4m round the bottom of injected wells.A method for sterilizing bacteria in the active development zones and for increasing the water intake capacity of injected well has been elaborated. Its applicability was shown by field experiments.更多还原