悬浮液基高效减阻携砂压裂液的研发与应用

Development and Application of Fracturing Fluid Based Suspension Thickener with High Efficiency Drag Reduction and Proppant Transport

麦尔耶姆古丽·安外尔 蒲 迪 翟怀建 刘 宽 邬国栋 余 波 金 诚

MAIERYEMUGULI Anwaier PU Di ZHAI Huaijian LIU Kuan WU Guodong YU Bo JIN Cheng

为解决压裂用聚合类乳液稠化剂不耐高盐以及悬浮液稠化剂稳定性差的问题，以抗盐缔合聚合物KFPY为基础，通过考察悬浮液稠化剂的稳定时间、本体黏度，优选了体系的稳定剂，优化了粉末稠化剂粒径以及比例，最终形成悬浮液稠化剂GAF-TE组成为：48.5%白油+1.5%乳化剂G10+5%有机改性膨润土+45% 抗盐缔合稠化剂KFPY。在玛18井水水质下，对悬浮液稠化剂GAF-TE的溶解性能、增黏性能、减阻性能以及配制的滑溜水体系的各项性能进行了评价。结果表明，0.1%稠化剂 GAF-TE 溶解时间为 18 s，黏度为 2.19 mPa.s，降阻率为76.8%；配制的滑溜水体系动态携砂能力强于普通的聚丙烯酰胺乳液，体系表面张力26.8 mN/m，与煤油间的界面张力0.96 mN/m，对岩心基质渗透率伤害率为6.97%，具有低伤害特性。该缔合型悬浮液稠化剂产品在新疆油田某区块进行现场应用，表现出较好的溶解性、降阻性能和携砂性能。

In order to solve the problem of poor salt tolerance of polymer emulsion thickening agent for fracturing and the poor stability of suspension thickener，based on the salt resistant associating polymer KFPY，the stabilizer，the particle size and proportion of the powder polymer thickener were optimized by determining the stability time and the bulk viscosity of suspension slurry thickener，the suspension emulsion thickening agent GAF-TE formula was formed as follows：48.5% white oil，1.5% emulsifying agent G10，5% organic modified bentonite and 45% salt resistant associating thickener KFPY. The performances of the GAF-TE including solubility，viscosity increasing，drag reducing and proppant transporting were evaluated in the formation water of Ma 18 well. The results showed that the dissolution time of 0.1% GAF-TE was 18 s，the viscosity was 2.19 mPa·s，and the drug reduction rate was 76.8% . The dynamic carrying capacity of the GAF-TE slickwater was better than that of the ordinary polyacrylamide emulsion. The surface tension of the GAF-TE slickwater was 26.8 mN/m，and the interfacial tension between the GAF-TE slickwater and the kerosene was 0.96 mN/m. The lower damage rate of the GAF-TE slickwater to core permeability was 6.97% . The GAF-TE had been applied in Xinjiang oilfield and showed good solubility，drug reduction and sand carrying performance.

10.19346/j.cnki.1000-4092.2022.03.002