An experimental study on rheological properties of the associating polymer solution in porous medium

doi:10.7623/syxb201104013

Editorial office of ACTA PETROLEI SINICA ›› 2011, Vol. 32 ›› Issue (4): 652-657.DOI: 10.7623/syxb201104013

• Petroleum Exploration • Previous Articles Next Articles

An experimental study on rheological properties of the associating polymer solution in porous medium

CAO Baoge 1 LUO Pingya 2

Received:2010-10-14 Revised:2011-02-24 Online:2011-07-25 Published:2011-09-22

缔合聚合物溶液在多孔介质中的流变性实验

曹宝格 1 罗平亚 2

1西安石油大学石油工程学院陕西西安 710065； 2西南石油大学油气藏地质及开发工程国家重点实验室四川成都 610500

通讯作者: 曹宝格
作者简介:曹宝格，女，1975年12月生，2006年获西南石油大学油气田开发工程专业博士学位，现为西安石油大学讲师，主要从事数值模拟、三次采油、油田开发研究和教学工作。
基金资助:
国家高科技研究发展计划（863）项目（2001AA602014-3）资助。

Abstract

Abstract:

Rheological rules of the associating polymer solution in porous medium through variations in resistance factors and residual resistance factors along with pore velocity were discussed. The results indicated that above the critical associating concentration (CAC), resistance factors of the associating polymer solution firstly dropped and then rose with the increase of pore velocity, but they started dropping again when they reached to a certain degree. However, below CAC, both resistance factors and residual resistance factors of the associating polymer solution rose firstly and then dropped with the increase of pore velocity. Compared with HPAM, the associating polymer solution was of higher ability to improve the waterflood mobility ratio, moreover, the lower the core permeability, the stronger the ability to improve the waterflood mobility ratio, and the lower the pore velocity that displays the elasticity effect. The increase of resistance factors for the associating polymer solution was mainly resulted from a higher adsorption and retention quantity of solution at low velocity, but from a better elasticity of solution at high velocity.

Key words: associating polymer solution, porous medium, rheological property, resistance factor, residual resistance factor, elasticity

摘要：

通过阻力系数、残余阻力系数随孔隙流速的变化，研究了缔合聚合物溶液在多孔介质中的流变规律。研究结果表明，在临界缔合浓度(CAC)上，缔合聚合物溶液的阻力系数随孔隙流速的增加先下降、后上升，当上升到一定程度时又开始下降；当浓度在CAC以下时，溶液的阻力系数随孔隙流速的增加先上升后下降；缔合聚合物溶液的残余阻力系数随孔隙流速的增加先上升、后下降。与MO4000相比，缔合聚合物溶液具有更好地改善水驱流度比的能力，且岩心渗透率越低，改善水驱流度比的能力越强，表现出弹性效应的孔隙流速越低；在低速下缔合聚合物溶液阻力系数的增加主要来源于其比较高的吸附滞留量，而在高速下其阻力系数增加主要来源于溶液比较好的弹性。

关键词: 缔合聚合物溶液, 多孔介质, 流变性, 阻力系数, 残余阻力系数, 弹性

CAO Baoge LUO Pingya. An experimental study on rheological properties of the associating polymer solution in porous medium[J]. Editorial office of ACTA PETROLEI SINICA, 2011, 32(4): 652-657.

曹宝格罗平亚. 缔合聚合物溶液在多孔介质中的流变性实验[J]. 石油学报, 2011, 32(4): 652-657.

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An experimental study on rheological properties of the associating polymer solution in porous medium

缔合聚合物溶液在多孔介质中的流变性实验

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