文章摘要
适用于低渗透储层的有机硼胍胶压裂液体系的制备 与性能评价*
Preparation and Performance Evaluation of Organic Boron Guanidine Gum Fracturing Fluid for the LowPermeability Reservoir
  
DOI:10.19346/j.cnki.1000-4092.2020.02.003
中文关键词: 低渗透储层  有机硼交联剂  防水锁伤害  低伤害  压裂液
英文关键词: low permeability reservoir  organic boron crosslinking agent  water-lock removal  low damage  fracturing fluid
基金项目:国家科技重大专项课题四“非均质陆相页岩气储层改造配套工艺技术”(项目编号2017ZX05039-004),陕西省创新能力支撑 计划“疏水缔合型低分子清洁压裂液的研发及其摩阻、悬砂性能研究”(项目编号2019KJXX-024)。
作者单位
乔红军,马春晓,高志亮,刘安邦 (陕西延长石油(集团)有限责任公司研究院陕西 西安 710065) 
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中文摘要:
      常规胍胶压裂液胍胶加量大、破胶后残渣含量高,影响了低渗透储层的渗流能力。为改善这一问题,用硼 酸、葡萄糖酸钠、三乙醇胺等制得有机硼交联剂JS-8,研究了JS-8、改性胍胶HPG-1和非离子型助排剂ZA-07组 成的低浓度胍胶压裂液的各项性能。结果表明,该压裂液体系交联时间可调,抗温抗剪切性能较好,在80℃、 170 s-1 下剪切持续90 min的黏度一直保持在218 mPa·s左右;破胶时间短,2 h内可完全破胶,破胶液黏度与残渣 含量低、界面张力仅为 1.07 mN/m,极大地降低了储层水锁伤害,压裂液对储层的平均渗透率伤害率仅为 19.25%,可用于低渗透储层的压裂改造。图4表3参19
英文摘要:
      The dosage of guar gum in conventional guar gum fracturing fluid is large,and the residual content is high after gel breaking,which affects the percolation capacity of low permeability reservoir. In order to improve the problem,the organic boron crosslinking agent JS-8 was synthesized by boric acid,sodium gluconate and triethanolamine,etc. The properties of low concentration guanidine gum fracturing fluid composed of JS-8,modified guanidine gum HPG-1 and non-ionic additive ZA-07 were studied. The results showed that the crosslinking time of the fracturing fluid system was adjustable,and the temperature tolerance and shearing resistance were excellent. The viscosity remained 218 mPa·s after shearing 90 min at 170 s-1 and 80℃. The gel breaking time of fracturing fluid was short,which could be completely broken within 2 h. The viscosity of gel breaking liquid and residue content were low,and the interfacial tension was only 1.07 mN/m,which greatly reduced water lock damage of the reservoir. The average permeability damage rate of the fracturing fluid was only 19.25%. The low concentration guanidine gum fracturing fluid could be used for the fracturing reformation of low permeability reservoir.
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