剪切方式对疏水缔合聚合物溶液性能的影响  

Study on effects of shear-mode on properties of hydrophobic associating polymer solution

作　　者：薛新生[1,2] 张健[1,2] 舒政[3] 任路 赵继发 崔素红[6] 

机构地区：[1]海洋石油高效开发国家重点实验室,北京100027 [2]中海油研究总院,北京100027 [3]西南石油大学石油工程学院,四川成都610500 [4]中国石油渤海钻探工程有限公司工程技术研究院,天津300457 [5]中国石油渤海钻探国际工程分公司,天津300457 [6]天津石油职业技术学院,天津301607

出　　处：《油气地质与采收率》2013年第1期59-62,115,共4页Petroleum Geology and Recovery Efficiency

基　　金：国家"十二五"重大专项课题"海上稠油化学驱油技术"(2011ZX05024-004)

摘　　要：疏水缔合聚合物溶液流变性能与剪切方式密切相关。采用吴茵搅拌器和近井地带剪切模拟装置,分别对质量浓度为1750mg/L的疏水缔合聚合物AP-P4溶液进行剪切,获得了相近的表观粘度,但其粘弹性和非牛顿性均不同。对比剪切前后的疏水缔合聚合物溶液发现,近井地带剪切模拟装置的剪切未改变溶液粘弹性和非牛顿性的"质",仅仅改变了其粘弹性和非牛顿性的"量";吴茵搅拌器剪切不仅改变了溶液的粘弹性和非牛顿性的"量",而且改变了溶液粘弹性和非牛顿性的"质"。同时,采用不同剪切方式获得的溶液,其相对分子质量及其分布、构建阻力系数和残余阻力系数、增油降水能力均不同。因此,采用吴茵搅拌器,模拟驱油聚合物在近井地带的剪切是不符合油藏实际情况的,该方法仅能够获得与预期表观粘度相近的溶液,但是却无法同步模拟溶液的其他流变性能;采用近井地带剪切模拟装置剪切更符合矿场实际。The paper studied the effects of shear-mode on rheological properties of hydrophobic associating polymer AP-P4' solution,whose concentration is 1 750 mg/L, sheared by Waring blender and the simulation device near wellbore. In order to study the influence on the rheological properties of the solutions, we compare their solutions sheared by different methods. It displayed that the viscoelastioity & non-Newtonian behavior of the solutions are different, although the apparent viscosity of the solutions is equal. The viscoelasticity & non-Newtonian behavior of the solution sheared by the simulation device near wellbore is only changed in 'magnitude , but the quality is not changed. The viscoelasticity & non-Newtonian behavior of the solution sheared by Waring blender is changed both in 'magnitude and in 'quality . At the same time, the solution obtained by different shearing method is different in its molecular weight,and in its distribution, resistance coefficient and residual resistance coefficient, variable increment of oil enhance and water constrain capacity. It is thought that it is not correspondent to the reservoir behavior to shear by Waring blender, it can only get the solution with the same viscosity, but other different rheological properties. The shearing by near-wellbore simulator can be more feasible in field practice.

关 键 词：剪切方式 疏水缔合聚合物 粘弹性 非牛顿性 近井地带剪切模拟装置 吴茵搅拌器 

分 类 号：TE357[石油与天然气工程—油气田开发工程]