为了改善海上A稠油油田低产井生产状况,针对原油流动性差的问题,提出采用化学吞吐降黏改善原油流动性以提高产量。运用室内实验、油藏工程方法和数值模拟研究方法,研究化学吞吐试验选井原则、进行化学吞吐体系室内实验和注入量优化,并...为了改善海上A稠油油田低产井生产状况,针对原油流动性差的问题,提出采用化学吞吐降黏改善原油流动性以提高产量。运用室内实验、油藏工程方法和数值模拟研究方法,研究化学吞吐试验选井原则、进行化学吞吐体系室内实验和注入量优化,并在海上A稠油油田现场试验应用。结果表明:①选井原则为主力油层井控制储量大于50×104 m 3,储集层厚度大于3 m,泥质含量小于15%,孔隙度大于25%及渗透率大于200 mPa·s等;②化学吞吐体系为CH-4作为稠油乳化降黏主剂,添加防乳化剂和润湿反转剂形成;③推荐试验井最优注入量为500 m 3,吞吐后有增液增油效果,有效期为113 d,累增油756 m 3。以上成果认识,对同类油田具有一定的推广及应用前景。展开更多
This paper describes the experience of Jilin oilfield trials for Microbial Enhanced Oil Recovery (MEOR). A new technique to identify microbes with DNA for MEOR has been established, and useful microbes selected f...This paper describes the experience of Jilin oilfield trials for Microbial Enhanced Oil Recovery (MEOR). A new technique to identify microbes with DNA for MEOR has been established, and useful microbes selected for use in field trials. Behaviors of bacteria activated in the reservoir, oil recovery and water cut, and the viscosity of crude oil produced through huff & puff testing and flooding with molasses-injection tests, have been investigated in situ. CJF-002, which produces biopolysaccharide, is the best among the microbes used for field trials, as it can use molasses as nutrient and produce a small quantity of CO2 and a mass of water-insoluble biopolymer. The metabolic behavior in the reservoir showed that CJF-002 had a good potentiality for MEOR.展开更多
文摘为了改善海上A稠油油田低产井生产状况,针对原油流动性差的问题,提出采用化学吞吐降黏改善原油流动性以提高产量。运用室内实验、油藏工程方法和数值模拟研究方法,研究化学吞吐试验选井原则、进行化学吞吐体系室内实验和注入量优化,并在海上A稠油油田现场试验应用。结果表明:①选井原则为主力油层井控制储量大于50×104 m 3,储集层厚度大于3 m,泥质含量小于15%,孔隙度大于25%及渗透率大于200 mPa·s等;②化学吞吐体系为CH-4作为稠油乳化降黏主剂,添加防乳化剂和润湿反转剂形成;③推荐试验井最优注入量为500 m 3,吞吐后有增液增油效果,有效期为113 d,累增油756 m 3。以上成果认识,对同类油田具有一定的推广及应用前景。
文摘This paper describes the experience of Jilin oilfield trials for Microbial Enhanced Oil Recovery (MEOR). A new technique to identify microbes with DNA for MEOR has been established, and useful microbes selected for use in field trials. Behaviors of bacteria activated in the reservoir, oil recovery and water cut, and the viscosity of crude oil produced through huff & puff testing and flooding with molasses-injection tests, have been investigated in situ. CJF-002, which produces biopolysaccharide, is the best among the microbes used for field trials, as it can use molasses as nutrient and produce a small quantity of CO2 and a mass of water-insoluble biopolymer. The metabolic behavior in the reservoir showed that CJF-002 had a good potentiality for MEOR.