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抗高温抗复合盐支链型聚合物降滤失剂的合成及其性能

邢林庄 袁玥辉 叶成 屈沅治 孙晓瑞 高世峰 任晗

邢林庄,袁玥辉,叶成,等. 抗高温抗复合盐支链型聚合物降滤失剂的合成及其性能[J]. 钻井液与完井液,2023,40(6):703-710 doi: 10.12358/j.issn.1001-5620.2023.06.002
引用本文: 邢林庄,袁玥辉,叶成,等. 抗高温抗复合盐支链型聚合物降滤失剂的合成及其性能[J]. 钻井液与完井液,2023,40(6):703-710 doi: 10.12358/j.issn.1001-5620.2023.06.002
XING Linzhuang, YUAN Yuehui, YE Cheng, et al.Synthesis and evaluation of a high temperature salt-resistant chain polymer filter loss reducer[J]. Drilling Fluid & Completion Fluid,2023, 40(6):703-710 doi: 10.12358/j.issn.1001-5620.2023.06.002
Citation: XING Linzhuang, YUAN Yuehui, YE Cheng, et al.Synthesis and evaluation of a high temperature salt-resistant chain polymer filter loss reducer[J]. Drilling Fluid & Completion Fluid,2023, 40(6):703-710 doi: 10.12358/j.issn.1001-5620.2023.06.002

抗高温抗复合盐支链型聚合物降滤失剂的合成及其性能

doi: 10.12358/j.issn.1001-5620.2023.06.002
详细信息
    作者简介:

    邢林庄,高级工程师,现在主要从事钻井相关技术与管理工作。电话 18999505658;E-mail:xinglz@petrochina.com.cn

  • 中图分类号: TE254.4

Synthesis and Evaluation of a High Temperature Salt-Resistant Chain Polymer Filter Loss Reducer

  • 摘要: 针对深井钻探中钻井液处理剂抗温抗复合盐性能不足的问题,以丙烯酰胺(AM)、2-丙烯酰胺-2-甲基丙磺酸(AMPS)、N-乙烯基己内酰胺(NVCL)、二甲基二烯丙基氯化铵(DMDAAC)、烯丙醇聚氧乙烯醚(APEG)为单体,以过硫酸钾和亚硫酸氢钠作为氧化还原体系进行自由基共聚反应,合成了一种支链型聚合物降滤失剂(PAANDA)。通过实验优化确定了最优合成条件为:n(AM)∶n(AMPS)∶n(NVCL)∶n(DMDAAC)∶n(APEG)=50∶20∶5∶10∶15,反应温度为50 ℃,反应时间为4 h,引发剂用量为0.3%。利用傅里叶红外光谱(FT-IR)和核磁共振氢谱(1H- NMR)确定了聚合产物的分子结构,通过热重分析(TGA)测得PAANDA 热分解温度大于300 ℃,表明其具有良好的热稳定性。同时,应用于水基钻井液中,进一步评价PAANDA 对水基钻井液流变和滤失性能的影响。结果显示,当PAANDA 加量为2.0%时,180 ℃老化后API滤失量为4.0 mL,高温高压滤失量为22.6 mL(180 ℃),同时具有抗复合盐能力,抗盐钙能力优于国外同类产品 Driscal D。

     

  • 图  1  降滤失剂PAANDA的分子结构

    图  2  降滤失剂PAANDA的FTIR图谱

    图  3  降滤失剂 PAANDA 的 1H-NMR 图谱

    图  4  降滤失剂PAANDA的热重分析图谱

    图  5  Driscal-D与降滤失剂 PAANDA在不同 基浆中的性能(在180 ℃老化16 h)

    图  6  降滤失剂 PAANDA经不同温度老化后的吸附性能

    表  1  单体物质的量比对聚合物降滤失性能的影响

    AM∶AMPS∶NVCL∶
    DMDAAC∶APEG
    AV/
    mPa·s
    PV/
    mPa·s
    YP/
    Pa
    FLAPI/
    mL
    50∶20∶10∶10∶1012.07.54.513.5
    40∶20∶10∶10∶2011.58.53.016.2
    50∶20∶5∶10∶1513.59.04.510.5
    50∶20∶15∶10∶516.010.55.512.8
    下载: 导出CSV

    表  2  在不同反应条件下的PAANDA性能

    引发剂/
    %
    T反应/
    t反应/
    h
    黏均分子量/
    g·mol-1
    FLAPI/
    mL
    0.26061.1×10510.8
    0.36061.3×1059.7
    0.46068.5×10411.2
    0.35061.5×1058.9
    0.34067.0×10411.4
    0.35051.6×1058.6
    0.35041.6×1058.0
    0.35039.2×10410.2
    下载: 导出CSV

    表  3  降滤失剂PAANDA加量对淡水基浆的影响

    PAANDA/
    %
    AV/
    mPa·s
    PV/
    mPa·s
    YP/
    Pa
    FLAPI/
    mL
    FLHTHP/
    mL
    04.03.01.048.082.0
    0.59.08.01.015.834.2
    1.018.014.04.08.030.6
    1.529.524.05.55.425.8
    2.041.531.010.53.021.6
    2.557.037.020.02.921.0
    3.076.042.034.02.920.8
      注:老化条件为160 ℃、16 h。
    下载: 导出CSV

    表  4  不同老化温度下含2%PAANDA淡水钻井液的性能

    T老化/
    AV/
    mPa·s
    PV/
    mPa·s
    YP/
    Pa
    FLAPI/
    mL
    FLHTHP/
    mL
    室温48.028.020.02.5
    15046.528.017.52.820.8
    16041.531.010.53.021.6
    17039.030.09.03.321.8
    18035.527.08.54.022.6
    19027.022.05.08.135.1
    20024.520.04.59.940.4
    下载: 导出CSV

    表  5  不同NaCl浓度下含2%PDAADA淡水钻井液的性能

    NaCl/
    %
    AV/
    mPa·s
    PV/
    mPa·s
    YP/
    Pa
    FLAPI/
    mL
    FLHTHP/
    mL
    035.527.08.54.022.6
    526.018.08.04.123.6
    1023.017.06.04.524.0
    2019.515.04.54.524.6
    3014.511.03.54.826.0
    36(饱和)14.011.03.05.227.0
      注:老化条件为180 ℃、16 h。
    下载: 导出CSV

    表  6  2%降滤失剂在复合盐水基浆中的性能

    NaCl/
    %
    CaCl2/
    %
    AV/
    mPa·s
    PV/
    mPa·s
    YP/
    Pa
    FLAPI/
    mL
    FLHTHP/
    mL
    150.517.514.03.54.625.6
    151.012.510.02.56.828.8
    151.510.08.02.08.139.0
    300.512.010.02.06.632.2
    301.010.59.01.510.851.8
    301.511.59.52.013.668.0
      注:老化条件为180 ℃、16 h。
    下载: 导出CSV

    表  7  淡水基浆加入不同处理剂老化后的Zeta电位值

    NaCl/%CaCl2/%PAANDA/%ζ/mV
    0 0 0 −12.5
    0 0 2 −41.2
    15 1.0 0 −7.6
    15 1.0 2 −33.2
    15 1.5 2 −16.7
    下载: 导出CSV
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  • 收稿日期:  2023-06-14
  • 修回日期:  2023-07-28
  • 刊出日期:  2023-12-30

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