Stability of the Dispersed Particle Gel Three-phase Foam in the Presence of Oil
Dispersed particle gel(DPG)three-phase foam is a novel foam flooding system.roam stability is a crucial factor influencing oil displacement efficiency.Crude oil has a significant effect on foam stability.The stability of DPG three-phase foam in the presence of oil was evaluated in two ways:Foaming before adding oil and foaming after adding oil.The morphology of oil in the foam was observed using a micro-scopic imaging system.The results showed that the contact mode between oil and foam has significant in-fluence on the stability of foam.The foam half-life reduced in both foaming ways in the presence of oil.With the increase of oil content,the foam half-life of foaming before adding oil remained the same.While the foam half-life of foaming after adding oil continued to reduce with the increase of oil content.On the whole,the foam of foaming after adding oil is much more stable than that of foaming before adding oil.The small oil droplets adhering to the interface formed the pseudoemulsion film which stabilized foam,and the continuous oil phase on the interface was the main cause of the instability of the foam.DPG parti-cles prevent small oil droplets from coalescing and spreading,which makes the DPG three-phase foam more stable than the traditional foam in the presence of oil.
Dispersed particle gel three-phase foam(DPG three-phase foam) oil phase half-life interfacial tension stability pseudoemulsion film
Xue Yao Xin Sun Guang Zhao Mingwei Zhao Caili Dai
School of Petroleum Engineering,China University of Petroleum(East China),Qingdao,Shandong,266580,China
国内会议
青岛
英文
124-131
2018-06-20（万方平台首次上网日期，不代表论文的发表时间）