西南石油大学学报(自然科学版) ›› 2019, Vol. 41 ›› Issue (3): 177-184.DOI: 10.11885/j.issn.1674-5086.2018.08.12.03

• 石油机械与油田化学 • 上一篇    

多价金属离子对有机硼胍胶压裂液的影响及对策

汪志臣, 吕振虎, 董景锋, 张凤娟, 周培尧   

  1. 中国石油新疆油田分公司工程技术研究院, 新疆 克拉玛依 834000
  • 收稿日期:2018-08-12 出版日期:2019-06-10 发布日期:2019-06-10
  • 通讯作者: 吕振虎,E-mail:lvzhenhu2016@petrochina.com.cn
  • 作者简介:汪志臣,1983年生,男,汉族,湖北黄石人,工程师,硕士,主要从事油气田储层改造方面的研究。Email:wzhichen@petrochina.com.cn;吕振虎,1990年生,男,汉族,新疆奇台人,工程师,硕士,主要从事井下控制与测量及储层改造方面的研究工作。E-mail:lvzhenhu2016@petrochina.com.cn;董景锋,1984年生,男,汉族,山东定陶人,高级工程师,博士,主要从事油气田储层改造研究。E-mail:dongjingfeng0530@petrochina.com.cn;张凤娟,1987年生,女,汉族,山东临沂人,工程师,硕士,主要从事油气田储层改造研究。E-mail:zhangfengjuan@petrochina.com.cn;周培尧,1989年生,男,汉族,湖北蕲春人,工程师,硕士,主要从事油气田储层改造研究。E-mail:zhoupeiyao@petrochina.com.cn
  • 基金资助:
    国家科技重大专项(2016ZX05070)

Influence of Multivalent Metal Ions on Organic Borate-crosslinked Guanidine Gum Fracturing Gluids: Analysis and Countermeasures

WANG Zhichen, LÜ Zhenhu, DONG Jingfeng, ZHANG Fengjuan, ZHOU Peiyao   

  1. Engineering Research Institute, PetroChina Xinjiang Oilfield Company, Karamay, Xinjiang 834000, China
  • Received:2018-08-12 Online:2019-06-10 Published:2019-06-10

摘要: 针对新疆油田环玛湖地区浅层地下水、稠油热采水、压裂返排液中存在多价金属离子(Ca2+、Mg2+、Fe3+、Fe2+),影响其配制的胍胶压裂液性能。通过模拟不同种类和浓度多价金属离子水溶液,分析多价金属离子对有机硼胍胶压裂液溶胀、交联及耐温耐剪切性能的影响规律,研究了NSA、EDTA、CA,3种络合剂对多价金属离子的屏蔽效果。研究表明,多价金属离子对有机硼胍胶压裂液影响程度依次为Fe2+ > Fe3+ > Mg2+ > Ca2+;3种络合剂对Mg2+屏蔽能力为CA>NSA>EDTA,对Ca2+屏蔽能力为NSA > EDTA > CA,对Fe3+屏蔽能力为EDTA > NSA。为不同水质配制有机硼胍胶压裂液选择络合剂提供了依据。

关键词: 有机硼胍胶压裂液, 稠油热采水, 多价金属离子, 络合剂, 屏蔽效果

Abstract: In this study, we investigate the influence of multivalent metal ions (such as Ca2+, Mg2+, Fe3+, and Fe2+) present in shallow groundwater, heavy oil thermal recovery-produced water, and fracturing flowback fluids in the periphery of the Mahu oilfield in Xinjiang, on the performance of organic borate-crosslinked guanidine gum fracturing fluids. Through the simulations of aqueous solutions containing different types and concentrations of multivalent metal ions, the influence patterns of multivalent metal ions on the swelling, crosslinking, thermal resistance, and shear resistance properties of organic boratecrosslinked guanidine gum fracturing fluids were analyzed. Furthermore, the shielding effects of three complexing agents (NSA, EDTA, and CA) toward various multivalent metal ions were investigated. The results indicated that the order of influence of the various multivalent metal ions on organic borate-crosslinked guanidine gum fracturing fluids is Fe2+ > Fe3+ > Mg2+ > Ca2+, and the order of shielding ability of the three complexing agents toward Mg2+, Ca2+, and Fe3+ are CA > NSA > EDTA, NSA > EDTA > CA, and EDTA>NSA, respectively.

Key words: organic borate-crosslinked guanidine gum fracturing fluid, heavy oil thermal recovery-produced water, multivalent metal ions, complexing agents, shielding effect

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