AN EXPERIMENTAL STUDY OF THE PROPERTIES OF A POLYACRYLAMIDE/ ALUMINUM CITRATE“ COLLOIDAL DISPERSION GEL”

LIN Meiqin; LI Mingyuan; Peng Bo; JI Shuling; WU Zhaoliang

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AN EXPERIMENTAL STUDY OF THE PROPERTIES OF A POLYACRYLAMIDE/ ALUMINUM CITRATE“ COLLOIDAL DISPERSION GEL”

Research Article | 更新时间：2021-03-19

- AN EXPERIMENTAL STUDY OF THE PROPERTIES OF A POLYACRYLAMIDE/ ALUMINUM CITRATE“ COLLOIDAL DISPERSION GEL”
- Acta Polymerica Sinica Issue 5, Pages: 606-611(1999)
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- Published：20 October 1999，
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LIN Meiqin, LI Mingyuan, Peng Bo, JI Shuling, WU Zhaoliang. AN EXPERIMENTAL STUDY OF THE PROPERTIES OF A POLYACRYLAMIDE/ ALUMINUM CITRATE“ COLLOIDAL DISPERSION GEL”. [J]. Acta Polymerica Sinica (5):606-611(1999)
DOI：

LIN Meiqin, LI Mingyuan, Peng Bo, JI Shuling, WU Zhaoliang. AN EXPERIMENTAL STUDY OF THE PROPERTIES OF A POLYACRYLAMIDE/ ALUMINUM CITRATE“ COLLOIDAL DISPERSION GEL”. [J]. Acta Polymerica Sinica (5):606-611(1999) DOI：

摘要

用低浓度不同分子量的部分水解聚丙烯酰胺（ＨＰＡＭ）和柠檬酸铝制备了胶态分散凝胶（ＣＤＧ）

并用奥氏粘度计、超细粒度分析仪、岩芯流动实验对ＣＤＧ的性质进行了研究．结果表明

ＣＤＧ的粘度比ＨＰＡＭ粘度低

粒径在４５０～５２０ｎｍ之间．岩芯流动实验结果表明

ＣＤＧ能够使岩芯的流动阻力大幅度增加

且在岩芯中达到同样的流动阻力所需通过ＣＤＧ的体积与形成ＣＤＧ的ＨＰＡＭ的分子量、浓度及岩芯渗透率有关．

Abstract

The colloidal dispersion gels (CDG) were prepared by low concentration partiallyhydrolyzed polyacrylamide with different molecular weights and aluminum citrate. Theproperties of CDG were investigated by the Oswald capillary viscometer

ultrafine sizeanalyzer and theflow experiment. The resultsshowedthatthe viscosity of CDG islowerthanthat of hydrolyzed polyacrylamide (HPAM) and the viscosity of CDG decreases withincreasing the reaction time. The particle diameter of CDG with HPAM molecular weights of 4×106and 1.4×107 was determined to be 460 and 510 nm

respectively. The flow resistance of CDG

which generally increased with increasing HPAM molecular weights and concentration

is much larger than that of HPAM solutions in the core. The flow resistance of the CDG in lower-permeability core was increased more quick than that of the CDG in higher-permeability core. The flow resistance of CDG in the core was associated with the moleculare weight and concentration of HPAM and the permeability of the core. CDG is able to increase the flow resistance in the core effectively.

关键词

胶态分散凝胶粘度粒径流动阻力渗透率

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