摘要
某稠油油藏的纯蒸汽吞吐的效果不好,而烟道气辅助蒸汽吞吐开采稠油是一种有效的开采方式。为了研究烟道气辅助蒸汽吞吐,提高采收率的机理,在室内主要从CO_2和N_2角度研究提高稠油的采收率机理。研究结论表明,CO_2对原油产生的降粘和膨胀能力最好;提高采收率机理主要为原油膨胀机理、溶解驱机理、降粘机理。
The effect using steam stimulation to exploit heavy oil is not well in a heavy-oil reservoir, while the flue gas assisted steam stimulation to exploit heavy oil is an effective way. To study on the mechanism of the flue gas assisted steam stimulation for EOR, we have conducted a research on the mechanism of CO2 injection and N2 injection to exploit heavy oil by laboratory experimenting. It is indicated that the efficiency of CO2 gas on the crude oil viscosity reduction and expansion is best, and the mechanism of EOR includes mechanism of expansion, dissolved flooding mechanism and viscosity reduction mechanism.
出处
《石油化工应用》
CAS
2011年第11期1-3,共3页
Petrochemical Industry Application
关键词
稠油油藏
蒸汽吞吐
烟道气
室内实验
机理
heavy-oil reservoir
steam stimulation
flue -gas
laboratory experiment
mecha- nism
