Ca-SA/P（AM-AMPS）微球的制备及性能研究

doi:10.3969/j.issn.1001-1803.2023.02.002

Abstract

Abstract:

Polyacrylamide profile control agents have the problems of poor temperature resistance and rapid swelling at room temperature. Calcium alginate/Polyacrylamide （Ca-SA/P（AM-AMPS）） microspheres were prepared by cross-linking Ca²⁺ with sodium alginate （SA） on the surface of microspheres to improve their properties. FT-IR, SEM, TEM, Nano Sizer and Zeta-potential Tester were used to analyze the structure, morphology and properties of the microspheres. The results showed that the average particle size of Ca-SA/P（AM-AMPS） microspheres ranged from 47 nm to 92 nm at different SA mass fraction. When the mass fraction of SA was 8%, the swelling property of Ca-SA/P（AM-AMPS） microspheres was the best. The swelling property of Ca-SA/P（AM-AMPS） microspheres was 2.52 times at 20 ℃, which was 42% lower than that of P（AM-AMPS） microspheres. At 60 ℃, the swelling property of Ca-SA/P（AM-AMPS） microspheres was 3.35 times, 52% higher than P（AM-AMPS） microspheres. The results show that Ca-SA/P（AM-AMPS） microspheres swell slowly at room temperature, and swell quickly at high temperature with a larger swelling, which can better match the injection profile control process and achieve efficient profile control and oil displacement.

Key words: water plugging and profile control, polyacrylamide, calcium alginate, delayed swelling

CLC Number:

TE357

Xuan Yani,Tang Fan,Zhang Tao,Zhuang Liqi,Zhao Shicheng. Preparation of Ca-SA/P（AM-AMPS） microsphere and their properties[J].China Surfactant Detergent & Cosmetics, 2023, 53(2): 133-139.

Figures/Tables 10

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References 15

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Samples	10% weighting loss/℃	20% weighting loss/℃	40% weighting loss/℃	Termination weight loss/%
P（AM-AMPS）	100	197	321	83
Ca-SA/P（AM-AMPS）	100	280	377	79

Preparation of Ca-SA/P（AM-AMPS） microsphere and their properties

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