不同剪切方式对聚合物溶液及凝胶性能的影响  

Performance Properties of Polymer Solutions and Gels under Shearing in Various Modes

作　　者：张群志[1] 赵文强[1] 陈素萍[1] 焦秋菊[1] 

机构地区：[1]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000

出　　处：《油田化学》2008年第3期256-260,共5页Oilfield Chemistry

摘　　要：考察了吴茵搅拌器、筛网(TGU转变压测定装置)、人造岩心及普通搅拌器等不同剪切方式下,4种驱油体系的动态性能。这4种体系是:抗盐聚合物(梳状聚合物)KYPAM溶液,疏水缔合聚合物AP-P4溶液,KYPAM/醋酸铬凝胶(有机铬凝胶)及KYPAM/间苯二酚/甲醛凝胶(酚醛凝胶),其黏度分别为139、170、143及260 mPa.s(66℃,5 1/s)。在吴茵搅拌器的高速剪切下,有机铬凝胶和酚醛凝胶的网状结构完全被破坏,抗盐聚合物溶液黏度保留率最高,疏水缔合聚合物其次。聚合物溶液通过筛网后黏度损失很小,有机酚醛凝胶通过筛网时发生剪切变稀,有机铬凝胶堵塞筛网严重。与聚合物溶液及酚醛凝胶相比,有机铬凝胶注入岩心困难,不能在岩心中运移,酚醛凝胶虽能在岩心中运移但黏度损失严重,聚合物溶液从岩心流出后黏度保留率较高。在搅拌器搅拌条件下,有机铬和酚醛凝胶液的成胶受到影响,不能形成整体凝胶。The changes in performance properties of 4 experimental flooding systems caused by shearing in various modes are investiagated and these systems are： solutions of comb-like copolymer KYPAM and hydrophobically associating polymer AP-P4, KYPAM/ chromium acetate （polymer/Cr^3＋ ） gel, and KYPAM/resorcin/formaldehyde （polymer/resin） gel with viscosity at 66℃ and 5 1/s being of 139, 170, 143, and 260 mPa.s, respectively. Under high shearing in Waring Blender, the network of polymer/Cr^3＋ and polymer/resin gels are destroyed and their viscosity is lost, the viscosity maintenance of KYPAM solution is high and of AP-P4 solution is lower. Squeezed out from the screen in Tiorco＇s TGU apparatus, the two polymer solutions keep most their original viscosity, polymer/Cr^3＋ gel undergoes shearing thinning in the screen and polymer/resin gel heavily plugs the screen. Polymer/Cr^3＋ gel injects into artificial cores with great difficulties and can not transfer in cores, polymer/resin gel can transfer in cores but losses its viscosity almost entirely, for the two polymer solutions, flown out of cores, their viscosity maintenance is relatively high. Under stirring with a common stirrer polymer/Cr^3＋ and polymer/resin gelling solutions do not form bulk gels.

关 键 词：聚合物溶液 聚合物凝胶 抗剪切性 剪切方式 黏度损失 岩心注入性 岩心运移性 成胶性能 动态条件 

分 类 号：O631.3[理学—高分子化学] TE39[理学—化学]