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油井水泥缓凝剂BH作用机理研究

严思明 王富辉 高金 李省吾 廖咏梅

严思明, 王富辉, 高金, 李省吾, 廖咏梅. 油井水泥缓凝剂BH作用机理研究[J]. 钻井液与完井液, 2015, 32(2): 64-66,71. doi: 10.3969/j.issn.1001-5620.2015.02.017
引用本文: 严思明, 王富辉, 高金, 李省吾, 廖咏梅. 油井水泥缓凝剂BH作用机理研究[J]. 钻井液与完井液, 2015, 32(2): 64-66,71. doi: 10.3969/j.issn.1001-5620.2015.02.017
YAN Siming, WANG Fuhui, GAO Jin, LI Xingwu, LIAO Yongmei. Study on Working Mechanism of Oil Well Cement Retarder BH[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(2): 64-66,71. doi: 10.3969/j.issn.1001-5620.2015.02.017
Citation: YAN Siming, WANG Fuhui, GAO Jin, LI Xingwu, LIAO Yongmei. Study on Working Mechanism of Oil Well Cement Retarder BH[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(2): 64-66,71. doi: 10.3969/j.issn.1001-5620.2015.02.017

油井水泥缓凝剂BH作用机理研究

doi: 10.3969/j.issn.1001-5620.2015.02.017
详细信息
    作者简介:

    严思明,教授,博士,主要从事油田化学的教学和研究工作。地址:四川省成都市新都区西南石油大学;电话13981828187;邮政编码610500;E-mail:yansm843@163.com。

  • 中图分类号: TE256.6

Study on Working Mechanism of Oil Well Cement Retarder BH

  • 摘要: 通过XRD、能谱分析、络合滴定、SEM等方法,研究了油井水泥水化过程诱导期的反应机理及实验室自制缓凝剂BH(长支链的羧酸、磺酸型)对水泥水化过程诱导期的影响。水泥熟料水化初期,体系中Ca(OH)2含量为2%左右,诱导期结束后,Ca(OH)2含量最大可升至45%。结果表明,水化过程诱导期主要受溶液中Ca(OH)2含量的影响。缓凝剂BH能牢固地吸附到水泥颗粒表面形成包覆层,阻止水泥的进一步水化,同时能够与Ca2+络合,增加Ca(OH)2过饱和溶解度至1.97 g/mL,抑制Ca(OH)2晶核的形成,延长了水泥浆的诱导期。从电镜图可以看出, BH能改变Ca(OH)2晶体的晶貌,抑制晶体生长,从而在一定程度上延长了水泥的稠化时间,达到了缓凝目的。

     

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出版历程
  • 收稿日期:  2015-01-22
  • 刊出日期:  2015-03-31

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