聚合物凝胶解堵剂的研制及应用

DEVELOP AND APPLICATION OF POLYMER GEL PLUG REMOVER

杜清珍 南庆义 王志强 陈福有 景荣华 余吉良

Du Qingzhen Nan Qingyi Wang Zhiqiang Chen Fuyou Jing Ronghua Yu Jiliang

华北石油管理局

针对聚丙烯酰胺铬冻胶(或凝胶)系列堵调剂堵水调剖对非目的层造成伤害的现象,研制了CHY解堵剂,该解堵剂是采用对油层无任何伤害的无机物添加一定的催化剂配制而成的。它能使粘度非常大的聚合物凝胶迅速溶解成粘度接近于水的溶液,该解堵技术具有解除堵塞能力强,施工工艺简单、方便的特点。经在蒙古林油田应用表明,有效率85.7%,平均单井增油660t。

CHY plug removing agent is developed to solve the problem of damage to the non-target zone caused by polyarylamide chromium gel(or gel).The agent is formed by combining inorganic material(possesses no damage to the oil reservoir) with a certain amount of catalysts.It can make the viscous polymer gel to dissolve rapidly into solution with the viscosity approaching that of water.The plug removal technique has the following characteristics:strong capability of removing plug,simple and convenient construction process and so on.Field application in Mengulin Oil Field shows that the effective percentage is 85.7%,the average incremental Oil of individual well is 660 t.

10.3969/j.issn.1000-7393.1999.05.018