2020
DOI: 10.1088/1742-6596/1707/1/012020
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Experimental investigation on the injection profile variation in the weak gel injection process

Abstract: In this paper, the gel-forming performance and rheological properties of weak gel systems were studied through laboratory gel-forming experiments. The plugging behavior and mechanism of the weak gel system for sand-packed tubes with different permeability were evaluated. The results showed that intramolecular cross-linking was dominated when the polymer concentration was low and the viscosity increased litter after gelation. Intermolecular cross-linking plays a major role when the polymer concentration is high… Show more

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“…When the shear rate was 7.34 s −1 , the apparent viscosity of weak gels was 8 mPa•s. For a more detailed description of the rheological properties, refer to Reference [33]. The polymer utilized was partially hydrolyzed polyacrylamide (HPAM) with a molecular weight of 2000 × 10 4 , an effective cost content of 90%, and a hydrolysis degree of 25%, procured from Beijing ZKCHEM Co., LTD, Beijing, China.…”
Section: Experimental Materials and Instrumentsmentioning
confidence: 99%
“…When the shear rate was 7.34 s −1 , the apparent viscosity of weak gels was 8 mPa•s. For a more detailed description of the rheological properties, refer to Reference [33]. The polymer utilized was partially hydrolyzed polyacrylamide (HPAM) with a molecular weight of 2000 × 10 4 , an effective cost content of 90%, and a hydrolysis degree of 25%, procured from Beijing ZKCHEM Co., LTD, Beijing, China.…”
Section: Experimental Materials and Instrumentsmentioning
confidence: 99%