从克拉玛依油田井场筛选出13株兼性厌氧菌,从中复壮出6株菌,筛选出的菌种在克拉玛依油田油藏环境下能以原油烃类为碳源进行生长和繁殖;可以降低原油粘度和倾点,降低油水界面张力。研究发现,菌种能够代谢原油中的较长链烷烃为短链烷烃,同时能够产酸、产气、产表面活性物质。对筛选出的3株菌进行了室内微生物驱油模拟试验,提高水驱后采收率10%～15%(OOIP)。 Thirteen strains of facultative anaerobes were isolated from well sites in Karamay Oilfield and 6 strains were recovered from them. The selected strains could grow and multiply under the hydrocarbon environment of Karamay Oilfield as carbon source. Viscosity and pour point, reduce the oil-water interfacial tension. The study found that bacteria can metabolize the longer-chain paraffins in crude oil as short-chain paraffins, and at the same time, they can produce acid, produce gas and produce surface-active substances. Three microorganisms were screened for indoor microbiological flooding simulation experiments to improve recovery after waterflooding by 10% -15% (OOIP).