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固井用防水窜自愈合剂的探索

辛海鹏 吴达华 张明辉 邓强 王建瑶 曾建国

辛海鹏, 吴达华, 张明辉, 邓强, 王建瑶, 曾建国. 固井用防水窜自愈合剂的探索[J]. 钻井液与完井液, 2020, 37(2): 221-225. doi: 10.3969/j.issn.1001-5620.2020.02.015
引用本文: 辛海鹏, 吴达华, 张明辉, 邓强, 王建瑶, 曾建国. 固井用防水窜自愈合剂的探索[J]. 钻井液与完井液, 2020, 37(2): 221-225. doi: 10.3969/j.issn.1001-5620.2020.02.015
XIN Haipeng, WU Dahua, ZHANG Minghui, DENG Qiang, WANG Jianyao, ZENG Jianguo. Explore and Study on Well Cementing Anti-Water-Channeling Self-Healing Agent[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(2): 221-225. doi: 10.3969/j.issn.1001-5620.2020.02.015
Citation: XIN Haipeng, WU Dahua, ZHANG Minghui, DENG Qiang, WANG Jianyao, ZENG Jianguo. Explore and Study on Well Cementing Anti-Water-Channeling Self-Healing Agent[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(2): 221-225. doi: 10.3969/j.issn.1001-5620.2020.02.015

固井用防水窜自愈合剂的探索

doi: 10.3969/j.issn.1001-5620.2020.02.015
基金项目: 

国家重点研发计划课题“固井工程用高耐蚀高韧性水泥基材料的研究与应用”(2016YFB0303602);中国石油天然气集团有限公司科技项目“复杂工况条件下超深井固井密封力学机理及控制技术研究”(2019A-3910)

详细信息
    作者简介:

    辛海鹏,博士,现在主要从事油井水泥外加剂的研发及技术服务工作。电话(022)66310216;E-mail:xinhp@cnpc.com.cn

  • 中图分类号: TE256.6

Explore and Study on Well Cementing Anti-Water-Channeling Self-Healing Agent

  • 摘要: 针对固井后环空窜流遇水问题,笔者开发了防水窜自愈合剂。该防水窜自愈合剂为核壳结构,以高吸水树脂作为核心材料,吸水倍数从尺寸为100 μm开始呈指数增长,30 s内140目的样品吸水量达1898倍,120 s后达到稳定值,约2200倍;120目时吸水量在30 s也可达到892倍左右,120 s达到稳定值约1950倍。通过外部包裹后,其在水中可达到90℃下3 h不吸水的能力。在水泥水化后外壳破坏,其具有吸水自愈合能力。岩心实验表明,90℃下压差为2 MPa条件下防水窜自愈合剂40 min左右可完成裂缝封堵。含4%防水窜自愈合剂的常规密度水泥浆具有良好的流变性能,失水量可控,稠化时间线性正常,抗压强度较高,能够满足浅井固井水泥浆的需求。

     

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出版历程
  • 收稿日期:  2019-12-20
  • 刊出日期:  2020-04-28

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