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1 2025

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Preparation and characterization of polymer gel microspheres assembled layer by layer for profile control and water shutoff

Gong Xuefeng, Mu Liping, Liu Lirong

Green Sciences

2025

Vol. 27, nr 2

11--16

A new temporary plugging agent was developed to solve the problem of insufficient plugging performance of existing gel profile control and water shutoff. The organic material with temperature sensitivity and phase change function is assembled on the surface of the matrix material with high stability and good plugging performance by multi-layer assembly technology, and the composite gel profile control agent with multi-level structure is prepared. Research shows that the prepared profile control agent has a certain salt tolerance, and the inhibitory effect of CaCl2 is greater than that of NaCl. When the C25H52 content is 3.6%, the multi-layer assembled profile control agent prepared by it has the best water absorption performance. When the temperature is 60 °C, the multi-layer assembled paraffin profile control agent prepared has the best water absorption effect.