新型疏水缔合增稠剂作为固体酸载体的合成及耐稀释性能
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1.陕西科技大学化学与化工学院;2.中国石油长庆油田分公司油气工艺研究院;3.西安万德能源化学股份有限公司

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TE357

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秦创原“科学家+工程师”队伍建设项目(2024QCY-KXJ-052);陕西省重点研发计划(2024GX-YBXM-393);陕西省教育厅产业化项目(23JC008);西安市科技计划项目(22GXFW0014)


Synthesis and dilution resistance of novel hydrophobic associative thickener as solid acid carrier
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1.College of Chemistry & Chemical Engineering, Shaanxi University of Science & Technology;2.Oil & Gas Technology Research Institute of Changqing Oilfield Branch Company, PetroChina;3.Xi''an Wonder Energy Chemical Co., Ltd

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Qinchuangyuan

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    摘要:

    固体酸体系中的携带剂在运移至地层过程中易被地层水稀释,导致固体酸的酸化效果差。基于此,以丙烯酰胺、2-丙烯酰胺-2-甲基丙磺酸、甲基丙烯酰氧乙基三甲基氯化铵、十八烷基聚氧乙烯醚甲基丙烯酸酯为原料,通过水溶液聚合的方法制备了一种具有耐稀释性的疏水缔合型稠化剂(PAAOD)。采用傅里叶变换红外光谱(FT-IR)和核磁共振氢谱(1H NMR)对PAAOD的结构进行了表征。通过表观粘度、流变特性和酸岩反应速率等测试,研究了PAAOD的耐稀释性、抗剪切和缓速性。结果表明:单体均参与了聚合,PAAOD聚合成功。0.8wt%的PAAOD在130℃、剪切速率为170 s-1的条件下,剪切2h,表观粘度保持在63.39 mPa·s,表现出良好的耐温耐剪切性能;对PAAOD溶液进行耐稀释实验, 在25℃稀释两倍粘度损失率为43.75 %,在90℃稀释两倍粘度损失率为44.80%,表现出良好的耐稀释性,且在静置一定时间后,PAAOD粘度损失降低,具有一定的恢复性;在130℃下PAAOD的酸岩反应速率是0.06 mg/(cm2·s),证明聚合物具有良好的缓速性能。因此,稠化剂PAAOD在深井及超深井中有着良好的应用前景。

    Abstract:

    Carrying agents in solid acid systems are susceptible to dilution by formation water during transport to the formation, resulting in poor acidification of solid acids. Based on this, in this paper, a hydrophobic associative thickener (PAAOD) with dilution resistance was prepared by aqueous solution polymerization using acrylamide (AM), 2-Acrylamido-2-methylpropane sulfonic acid (AMPS), methylacryloxyethyl trimethyl ammonium chloride (DMC) and octylpolyoxyethylene ether methacrylate (OEMA). as raw materials. The structure of PAAOD was characterized using Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance hydrogen spectroscopy (1H NMR). The dilution resistance, shear resistance and retardation properties of PAAOD were investigated by means of performance tests such as apparent viscosity, rheology and acid rock reaction rate. The results of the study show that: The monomers were all involved in the polymerization and the PAAOD polymerization was successful. The apparent viscosity of 0.8 wt% PAAOD was maintained at 63.39 mPa·s after shearing for 2 h at 130°C and a shear rate of 170 s-1, showing good temperature and shear resistance; The PAAOD solution was subjected to dilution resistance experiments, and the rate of viscosity loss was 43.75 % for twofold dilution at room temperature (25°C) and 44.80 % for twofold dilution at high temperature (90°C), which showed good resistance to dilution, and after standing for a certain period of time, the loss of viscosity of PAAOD was reduced with a certain degree of restorative properties; The acid rock reaction rate of PAAOD at 130°C was 0.06 mg/(cm2·s), which proved that the polymer had good retardation properties. Therefore, thickening agent PAAOD has good application prospects in deep and ultra-deep wells.

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逯越婧,赖小娟,石华强,李海斌,陈加利,王磊,党志强.新型疏水缔合增稠剂作为固体酸载体的合成及耐稀释性能[J].精细化工,2025,42(6):

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  • 收稿日期:2024-06-21
  • 最后修改日期:2024-08-15
  • 录用日期:2024-07-29
  • 在线发布日期: 2025-06-06
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