树脂型压井液是一种无固相液体,体系中自由水被高吸水性树脂束缚而呈颗粒状冻胶状态,具有良好的储层保护效果。压井液中冻胶粒径大,有一定的强度,可变形,易流动,在压力作用下,冻胶颗粒在储层表面形成封堵层,阻止液体向地层中渗透。室内研究表明,树脂型压井液具有较好的储层保护功能。在现场施工中,树脂型压井液性能稳定,滤失量低,携砂性强,与地层水配伍性良好。在低压井的应用中没有发生漏失,修井后返排时间短,返排液含水率低,进入正常生产流程后,产液量提高,有利于修井后产能的恢复。
Resin type well control fluid is a solid-free liquid ,and the liquid looks like jelly be-cause the free water of system is trapped by high absorbent resin ,so that it has good reservoir protection .The jelly has big particle size and a certain strength ,as well it is deformable and easy to flow ,so it covers the reserve surface and prevents water leakage .The laboratory study dem-onstrates that the well control fluid has good reserve protection ability .In site construction ,the well control fluid has stable performance ,low filter loss ,strong carry capacity ,and good com-patibility with formation water .The application of low pressure well shows it is useful in preven-ting leakage and reducing backflow time .The moisture content of outlet liquid is low ,and the liquid production increases after entering the normal production process .It is advantageous to the productivity recovery .
