阳离子型弱凝胶调驱剂的性能与应用  

Properties and application of cationic weak gel profile control and flooding agent.

作　　者：刘庆旺[1] 范振中[1] 林瑞森[1] 

机构地区：[1]浙江大学化学系,浙江杭州310027

出　　处：《浙江大学学报（理学版）》2005年第3期295-299,共5页Journal of Zhejiang University（Science Edition）

摘　　要：研究了阳离子型弱凝胶调驱剂的组成与性能,调驱剂主要由阳离子聚丙烯酰胺和交联剂组成,配方为(质量分数) :0 .5 %阳离子聚合物+0 .0 3%～0 .0 6 %的交联剂.使用大量的弱凝胶驱替时,油相渗透率恢复值为92 .6 % ,水相渗透率的恢复值仅为15 .3% ,油相渗透率的恢复值明显大于水相渗透率的恢复值.岩心实验表明,该调驱剂岩心封堵率大于90 % ,突破压力梯度0 .4 MPa·cm- 1 .现场试验一口井,注水压力上升3.2 MPa,吸水剖面有效厚度增加了2 0 .3m,与其相连通的4口油井累计增油35 70 t,累计降水2 6 10 0 t,投入产出比1∶3.2 4 ,具有良好的经济效益.Composition and properties of cationic weak gel profile control and flooding agent (PFA) were studied. The PFA is composed of cationic polyacrylamides and cross-linking agent. The optical prescription is the aqueous solution with 0.5 percent of cationic polyacrylamides and 0.03-0.06 percent of cross-linking agent. After flooding with a large amount of cationic weak gel, the restorable permeabilities of oil and water were 92.6% and 15.3%,respectively. From the corn experiments, the water-plugging rate was greater than 90% and the gradient of breakthrough pressure was 0.4 MPa·cm+{-1}. The PFA was applied practically in an oil well. The average water-flooding pressure increase was 3.2 MPa. The effective thickness of water profile increase was 20.3 m. The total oil increase was 3 570 t and the water decrease was 26 100 t in the 4 wells connecting to the experiment well. The ratio of throwing into and producing was 1∶3.24.The PFA has good economic benefits.

关 键 词：调驱剂 性能评价 岩心实验 封堵率 现场试验 

分 类 号：O647.2[理学—物理化学] TE622.9[理学—化学]