季铵化嵌段共聚物型稳砂剂的构建及应用

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中图分类号：TQ316.31；TE358 文献标志码：A 文章编号：1671-0460（2026）01-0099-05

Abstract：Tomeetthedemandsofintensiveproductionandinjectioninoffshoreoilfieldsand toextendtheeffctiveness of measures，quatermized PDMAEMA-b-PAM block copolymer sand control agent was prepared using ATRP-controlled polymerization technology. Based on this，performance evaluation and mechanism analysis were conducted，and the field test was carried out in an oilfield in Bohai Sea.The results showed thatthe prepared sand control agent exhibited excelent flocculation andself-aggregation effects，the median particle size of the formation sand increased to 126.145μm after treatment. The permeability damage was minimal， with permeability retention rate of 83% after treatment. The critical sand production flow rate was high，and no sand production was observed under displacement flow rate of 30mL⋅min-1 . The quaternized PDMAEMA-b-PAM block copolymer sand control agent was successfully applied in the Bohai Sea oilfield， demonstrating significant sand control effectiveness.

Key words： Polymer; Synthesis; Preparation; Sand stabilizer; Sand production; Permeability

渤海油田以疏松砂岩为主，属中高孔渗储层，存在较高出砂风险[1-6]，加之高产出液的生产制度进一步加剧了出砂。（剩余6800字）