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钻井液用高分子聚合物高温流变特性影响因素探究

朱旭明 乌效鸣 郑文龙 迪娜·木拉提 蒋子为

朱旭明, 乌效鸣, 郑文龙, 迪娜·木拉提, 蒋子为. 钻井液用高分子聚合物高温流变特性影响因素探究[J]. 地质科技通报, 2021, 40(1): 200-208. doi: 10.19509/j.cnki.dzkq.2021.0115
引用本文: 朱旭明, 乌效鸣, 郑文龙, 迪娜·木拉提, 蒋子为. 钻井液用高分子聚合物高温流变特性影响因素探究[J]. 地质科技通报, 2021, 40(1): 200-208. doi: 10.19509/j.cnki.dzkq.2021.0115
Zhu Xuming, Wu Xiaoming, Zheng Wenlong, Mulati Dina, Jiang Ziwei. Factors affecting high temperature rheological properties of polymers used in drilling fluid[J]. Bulletin of Geological Science and Technology, 2021, 40(1): 200-208. doi: 10.19509/j.cnki.dzkq.2021.0115
Citation: Zhu Xuming, Wu Xiaoming, Zheng Wenlong, Mulati Dina, Jiang Ziwei. Factors affecting high temperature rheological properties of polymers used in drilling fluid[J]. Bulletin of Geological Science and Technology, 2021, 40(1): 200-208. doi: 10.19509/j.cnki.dzkq.2021.0115

钻井液用高分子聚合物高温流变特性影响因素探究

doi: 10.19509/j.cnki.dzkq.2021.0115
基金项目: 

中国地质调查局地质调查项目 12120113017600

中国地质调查局地质调查项目 DD20160209

详细信息
    作者简介:

    朱旭明(1990- ), 男, 现正攻读地质工程专业博士学位, 主要从事钻探工程研究工作。E-mail:zxm@cug.edu.cn

    通讯作者:

    乌效鸣(1956- ), 男, 教授, 主要从事钻探工程与钻井液技术的教学与科研工作。E-mail:xmwu0718@163.com

  • 中图分类号: P634.5

Factors affecting high temperature rheological properties of polymers used in drilling fluid

  • 摘要: 聚合物对钻井液的高温流变特性具有重要影响。对比了聚合物种类、加量、剪切时间、盐、造浆黏土等对聚合物溶液高温流变性的影响,并对不同温度下的剪切速率-剪切应力关系进行了流变模型拟合。结果表明,温度升高、剪切时间及盐量增加均导致黏度降低,超过190℃后黏度下降速率加剧;含5%甲酸盐与5%卤盐的样品黏度在降温阶段的黏度恢复率分别为86.8%和2.7%;以宾汉模式对造浆黏土与聚合物混合液进行拟合,220℃时的动切力最高达到5.47 Pa。温度升高使得聚合物溶液由假塑性向牛顿性演变的趋势增强。高于130℃时,长时间剪切导致黏度下降的趋势明显,此时含甲酸盐的聚合物溶液黏度较含卤盐的高,且降温阶段的黏度恢复率也较高。黏土的存在增强了混合液的网间结构,有利于高温下携带岩屑。

     

  • 图 1  典型的浆液高温流变测试图

    Figure 1.  Typical picture of high temperature rheology test

    图 2  总体试验设计流程图

    Figure 2.  Flow chart of overall test design

    图 3  不同聚合物溶液的黏度随温度变化曲线

    Figure 3.  Viscosity-temperature curves of various polymer solutions

    图 4  聚合物溶液不同温度下的黏度降低率

    Figure 4.  Viscosity reduction rate of polymer solutions at different temperatures

    图 5  聚合物加量对黏度的影响(40℃)

    Figure 5.  Influence of polymer additions on viscosity

    图 6  温度对聚合物溶液黏度的影响(511 s-1剪切速率)

    Figure 6.  Influence of temperature on viscosity of polymer solutions

    图 7  聚合物F溶液流变数据拟合(40℃)

    Figure 7.  Rheology model fitting of polymer F solutions(40℃)

    图 8  聚合物F溶液流变数据拟合(160℃)

    Figure 8.  Rheology model fitting of polymer F solutions(160℃)

    图 9  盐对聚合物溶液黏度的影响(511 s-1剪切速率)

    Figure 9.  Influence of salt on polymer viscosity (511 s-1)

    图 10  聚合物盐溶液的升、降温阶段黏度变化(85.16 s-1剪切速率)

    Figure 10.  Viscosity variation of polymer salt solutions during heating-cooling process(85.16 s-1)

    图 11  不同温度下剪切时间对黏度的影响

    Figure 11.  Influence of shear time on polymer viscosity at different temperature

    图 12  造浆黏土对聚合物流变性的影响

    a.聚合物F溶液的流变曲线;b.NV-1+聚合物F的流变曲线;c.SEP+聚合物F的流变曲线;d.ATTP+聚合物F的流变曲线

    Figure 12.  Influence of clay type on rheological properties of polymer solutions

    表  1  造浆黏土+聚合物F的流变参数拟合

    Table  1.   Rheological parameters fitting of different clay suspensions

    温度/℃ PV/(mPa·s) YP/Pa
    NV-1+聚合物 40 67.01 11.69
    100 58.90 10.93
    160 49.05 8.41
    220 25.06 5.47
    SEP+聚合物 40 62.96 11.11
    100 51.76 10.12
    160 44.60 9.24
    220 21.72 4.18
    ATTP+聚合物 40 58.95 8.86
    100 46.09 6.76
    160 28.13 3.24
    220 16.24 2.35
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  • 收稿日期:  2019-03-16

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