摘要
采用单岩芯流动试验考察了IPN、606、612三种预交联凝胶颗粒在裂缝性岩芯中的封堵系数分布情况,同时研究了三种凝胶颗粒在裂缝岩芯中4、10、30、180d后的封堵率、封堵保留率、颗粒突破压力梯度。试验结果表明凝胶颗粒在裂缝岩芯中的封堵系数分布及其动态规律能很好的用来评价颗粒在裂缝岩芯中的运移规律与调剖特性。发现IPN凝胶颗粒表现了良好的封堵效果,当注入1PV水时,裂缝长岩芯段封堵系数很稳定,明显高于606和612两种凝胶颗粒。180d后在裂缝岩芯中的封堵效率能达到90.3%,堵水率保留率达到99%,适合作为“窜流型油藏”的深部调剖剂。
The authors of the paper investigate IPN,606,612 pre-cross linked gel particles' distribution of blank- off coefficient in fractured core,meanwhile, study these gel particles' blank-offrate, reserve rate and the gradient of particles' break-through pressure in the fractured core after 4, 10, 30, and 180 hours respectively. The results of the experiment show that gel particles' distribution of blank -off coefficient and their dynamic law in the fractured core can be used to evaluate the particles' migration law and profile control property in the fractured core. It is also identified IPN gel particles illustrate a good blank-off effect. When IPV water is injeceted, the blank-off coeficient of long fractured core is quite steady, which is apparentely higher than that of 606 and 612 gel particals. The blank-off rate in the fractured core after 180 days can reach 90.3 percent and the reserve rate of blank-off water efficiency 99 percent. This kind of gel can be used as a deep profile control agent in the channeling reservoirs.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第3期97-99,共3页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
西南石油大学研究生创新基金(编号:CXJJ27020)。
关键词
IPN凝胶颗粒
封堵
突破压力梯度
调剖
实验
IPN gel particles
fractured core
blank-off coefficient
blank-off rate
reserve rate
break-through pressure gradient of the particles
profile adjusting
experiment.
