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双保型油田水无固相钻井液体系

李胜

李胜. 双保型油田水无固相钻井液体系[J]. 钻井液与完井液,2023,40(4):431-437 doi: 10.12358/j.issn.1001-5620.2023.04.003
引用本文: 李胜. 双保型油田水无固相钻井液体系[J]. 钻井液与完井液,2023,40(4):431-437 doi: 10.12358/j.issn.1001-5620.2023.04.003
LI Sheng.Research and application of dual-protective oilfield water drilling fluids system without solid[J]. Drilling Fluid & Completion Fluid,2023, 40(4):431-437 doi: 10.12358/j.issn.1001-5620.2023.04.003
Citation: LI Sheng.Research and application of dual-protective oilfield water drilling fluids system without solid[J]. Drilling Fluid & Completion Fluid,2023, 40(4):431-437 doi: 10.12358/j.issn.1001-5620.2023.04.003

双保型油田水无固相钻井液体系

doi: 10.12358/j.issn.1001-5620.2023.04.003
基金项目: 国家重点研发计划课题“井筒稳定性闭环响应机制与智能调控方法”(2019YFA0708303);国家自然科学基金项目“高温高压油气安全高效钻完井工程基础理论与方法”(U19B6003-05)。
详细信息
    作者简介:

    李胜,博士,毕业于中国石油大学(北京)油气井工程专业,现在主要从事钻井液技术研究工作。电话(010)56606422;E-mail:lisheng.sripe@sinopec.com。

  • 中图分类号: TE254.3

Research and Application of Dual-protective Oilfield Water Drilling Fluids System Without Solid

  • 摘要: 针对塔河油田奥陶系碳酸盐岩储层开发过程中,常规聚磺钻井液体系含不酸溶固相漏失后污染储层,磺化类处理剂不符合绿色开发理念等技术难题,因地制宜地引入油田水配制无固相钻井液,避免了固相对储层的损害,并优选出了抗高温抗钙增黏剂、流型调节剂、抗高温抗钙聚合物降滤失剂等关键处理剂,开发出了双保型油田水无固相钻井液体系。室内评价数据显示,该钻井液抗温可达150 ℃,动塑比高达0.68~0.76 Pa/mPa·s,生物毒性指标EC50高达28 600 mg/L,生物降解指标BOD5/CODCr高达21.35%,为无毒易降解钻井液体系,动态渗透率恢复值高达91.8%,具有良好的储层保护性能。研发的双保型油田水无固相钻井液体系成功在10多口深侧钻井应用,应用效果显著。

     

  • 表  1  纯碱加量对油田水钙离子含量的影响

    纯碱/
    %
    钙离子含量/
    mg·L−1
    纯碱/
    %
    钙离子含量/
    mg·L−1
    纯碱/
    %
    钙离子含量/
    mg·L−1
    013 280269104860
    110 16033885
    下载: 导出CSV

    表  2  预处理油田水钻井液用增黏剂的优选

    增黏
    实验
    条件
    AV/
    mPa·s
    PV/
    mPa·s
    YP/
    Pa
    HV-CMC 热滚前 35.0 29.0 6.0
    热滚后 5.0 4.0 1.0
    PAC-HV 热滚前 46.0 37.0 9.0
    热滚后 4.5 4.0 0.5
    80A51 热滚前 53.0 48.0 5.0
    热滚后 6.0 5.0 1.0
    SMVIS 热滚前 58.0 52.0 6.0
    热滚后 28.0 24.0 4.0
      注:测试温度为50 ℃;增黏剂的加量均为1%;热滚条件为140 ℃、16 h。
    下载: 导出CSV

    表  3  预处理油田水钻井液用降滤失剂的优选

    降滤
    失剂
    实验
    条件
    AV/
    mPa·s
    PV/
    mPa·s
    YP/
    Pa
    FLAPI/
    mL
    0.5%PAC-LV 热滚前 21 19.0 2.0
    热滚后 16 15.0 1.0 19.4
    0.5%LV-CMC 热滚前 16 14.0 2.0
    热滚后 13 12.0 1.0 15.6
    0.5%SMPFL-C 热滚前 19 16.5 2.5
    热滚后 16 15.0 1.0 12.4
    2%改性淀粉SMART 热滚前 15 13.0 2.0
    热滚后 13 11.5 1.5 9.2
    2%羧甲基淀粉 热滚前 17 15.0 2.0
    热滚后 12 11.0 1.0 16.4
    2%预胶化淀粉 热滚前 18 16.0 2.0
    热滚后 10 9.0 1.0 21.2
      注:流变参数测试温度为50 ℃;热滚条件为140 ℃、16 h。
    下载: 导出CSV

    表  4  预处理油田水钻井液用流型调节剂的优选

    配方测试条件AV/
    mPa·s
    PV/
    mPa·s
    YP/
    Pa
    YP/PV/
    Pa/mPa·s
    FLAPI/
    mL
    0.3%黄原胶 热滚前 35.0 21.0 14.0 0.67
    热滚后 20.5 16.0 4.5 0.28 5.0
    0.3%胍尔胶 热滚前 35.0 22.0 13.0 0.59
    热滚后 24.0 19.0 5.0 0.26 4.6
    0.3%SMRM-2 热滚前 49.0 25.0 24.0 0.96
    热滚后 29.0 19.0 10.0 0.53 4.2
      注:流变参数测试温度为50 ℃;热滚条件为140 ℃、16 h。
    下载: 导出CSV

    表  5  不同密度油田水无固相钻井液的性能

    ρ/
    g·cm−3
    测试
    条件
    AV/
    mPa·s
    PV/
    mPa·s
    YP/
    Pa
    YP/PV/
    Pa/mPa·s
    Gel/
    Pa/Pa
    FLAPI/
    mL
    FLHTHP/
    mL
    Kf
    1.08热滚前3923160.705.0/5.5
    热滚后3219130.684.0/4.54.614.20.0437
    1.12热滚前4124170.715.5/6.0
    热滚后2917120.714.5/5.04.813.60.0524
    1.16热滚前4126150.584.5/5.5
    热滚后3017130.764.5/5.03.612.80.0524
    1.30热滚前48.03018.00.605.0/6.5
    热滚后33.52112.50.605.0/6.02.210.2
    1.50热滚前57.03522.00.636.0/9.0
    热滚后45.03015.00.506.0/8.51.48.4
      注:流变参数测试温度为50 ℃;高温高压滤失量测试温度为140 ℃。
    下载: 导出CSV

    表  6  油田水无固相钻井液在不同热滚温度下的性能

    T热滚/℃ρ/(g·cm−3AV/mPa·sPV/mPa·sYP/PaYP/PV/(Pa/mPa·s)Gel/Pa/PaFLAPI/mLFLHTHP/mL
    1401.1640.521.019.50.934.5/5.03.612.8
    1501.1637.521.016.50.793.0/4.06.018.6
    1601.1629.017.012.00.711.5/3.010.435.2
      注:流变参数测试温度为50 ℃;高温高压滤失量测试温度为140 ℃。
    下载: 导出CSV

    表  7  油田水无固相钻井液环保性能的评价结果

    钻井液EC50/(mg/L)BOD5/CODCr/%
    聚磺钻井液体系 752 8.56
    油田水无固相钻井液体系 28600 21.35
    下载: 导出CSV

    表  8  岩心流动实验仪动态渗透率恢复实验结果

    钻井液Kg/
    10−3µm2
    Kw1/
    10−3µm2
    Kw2/
    10−3µm2
    R/
    %
    聚磺钻井液体系 4.322 2.356 2.031 86.7
    油田水无固相钻井液 6.102 2.103 1.912 91.8
    下载: 导出CSV

    表  9  TK-A井双保型油田水无固相钻井液的性能

    井深/mρ/(g·cm−3FV/sPV/mPa·sYP/PaYP/PV/(Pa/mPa·s)Gel/(Pa/Pa)FLAPI/mLFLHTHP/mLVs/%Kf
    6069.01.10431590.602.0/3.03.613.240.05
    6158.41.104416100.633.0/4.04.213.840.05
    6179.71.104417110.653.5/4.53.813.040.05
    6244.81.164418120.673.0/4.04.014.060.05
    6335.71.164317110.653.5/4.54.214.260.05
    6404.41.164519110.583.0/4.54.414.060.05
    6415.71.17401790.532.5/3.54.614.660.05
    6447.61.17391680.502.0/4.04.214.260.05
    下载: 导出CSV
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  • 收稿日期:  2023-02-16
  • 修回日期:  2023-04-23
  • 刊出日期:  2023-07-30

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