CAJ | 학술논문

对菌种进行活化和筛选，培育出了适合辽宁某油田稠油的菌种，并通过实验分别考察了该菌对降低稠油中粘度、含蜡量及降低稠油界面张力的作用：50℃的条件下，稠油的粘度降低了22.7%；含蜡量降低了12.4%；稠油的界面张力降低了20.8%。在微生物的作用下，稠油中大分子的烃类含量降低，小分子烃类含量明显增加，稠油的流动性增强；微生物的代谢产物使稠油形成油水乳状液，增强了稠油的流动性，从而提高稠油开采率。
대균충진행활화화사선，배육출료괄합료녕모유전주유적균충，병통과실험분별고찰료해균대강저주유중점도、함사량급강저주유계면장력적작용：50℃적조건하，주유적점도강저료22.7%；함사량강저료12.4%；주유적계면장력강저료20.8%。재미생물적작용하，주유중대분자적경류함량강저，소분자경류함량명현증가，주유적류동성증강；미생물적대사산물사주유형성유수유상액，증강료주유적류동성，종이제고주유개채솔。
The strains were screened and activated to produce the suitable strain for heavy oil reservoirs in a certain oilfield in Liaoning province, and the functions of the bacteria for reducing viscosity, wax content and interfacial tension of heavy oil were investigated through the experiments. The results show that,under the condition of 50 ℃, the reduction rate of viscosity is 22.7%, the reduction rate of wax content is 12.4%, and the reduction rate of interfacial tension is 20.8%.Under the action of microorganisms, macromolecular hydrocarbons content of heavy oil is reduced, small molecule hydrocarbon content increases significantly, heavy oil liquidity enhances. Heavy oil changes to emulsion by microbial metabolites, which can enhance the flowability of heavy oil to improve the rate of heavy oil recovery.