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抗超高温220 ℃聚合物水基钻井液技术

刘锋报 孙金声 刘敬平 黄贤斌 孟旭

刘锋报,孙金声,刘敬平,等. 抗超高温220 ℃聚合物水基钻井液技术[J]. 钻井液与完井液,2024,41(2):148-154 doi: 10.12358/j.issn.1001-5620.2024.02.002
引用本文: 刘锋报,孙金声,刘敬平,等. 抗超高温220 ℃聚合物水基钻井液技术[J]. 钻井液与完井液,2024,41(2):148-154 doi: 10.12358/j.issn.1001-5620.2024.02.002
LIU Fengbao, SUN Jinsheng, LIU Jingping, et al.A polymer water based drilling fluid for 220 ℃ bottomhole temperature[J]. Drilling Fluid & Completion Fluid,2024, 41(2):148-154 doi: 10.12358/j.issn.1001-5620.2024.02.002
Citation: LIU Fengbao, SUN Jinsheng, LIU Jingping, et al.A polymer water based drilling fluid for 220 ℃ bottomhole temperature[J]. Drilling Fluid & Completion Fluid,2024, 41(2):148-154 doi: 10.12358/j.issn.1001-5620.2024.02.002

抗超高温220 ℃聚合物水基钻井液技术

doi: 10.12358/j.issn.1001-5620.2024.02.002
基金项目: 国家自然科学基金基础科学中心项目“超深特深层油气钻采流动调控”(52288101)。
详细信息
    作者简介:

    刘锋报,高级工程师,在读博士研究生,1985年生,毕业于中国地质大学(北京)化学工程专业,目前从事深井钻完井液技术研究与管理工作。E-mail:liufengbao100@126.com

  • 中图分类号: TE254.3

A Polymer Water Based Drilling Fluid for 220 ℃ Bottomhole Temperature

  • 摘要: 我国深层油气资源丰富,其高效开发对保障国家能源安全具有重大意义。钻井液是深部地层钻探的关键,但目前常规聚合物钻井液的抗温能力普遍低于220 ℃,且盐会大幅降低钻井液性能,钻探过程中往往由于钻井液失效引发安全事故,对深层油气开发造成重大损失。针对钻井液高温高盐条件下性能恶化的难题,合成了具有协同作用的抗高温两性离子聚合物和抗高温阴离子聚合物,通过高强度的网架结构调控钻井液流变性;合成抗超高温高效封堵剂来提高钻井液封堵性能和滤失性能,封堵泥饼和砂床,阻止压力传递。以抗高温两性离子聚合物、抗高温阴离子聚合物和抗超高温高效封堵剂为核心处理剂,构建了一套抗超高温220 ℃的聚合物水基钻井液体系,并评价了该钻井液的性能。实验结果表明,该钻井液具有良好的流变滤失性、沉降稳定性、封堵性和润滑性,其高温高压滤失量仅为9.6 mL,高温高压下仍保持黏度和切力稳定,直立老化72 h沉降因子仅为0.5113,砂床侵入深度仅为6 mm,老化后润滑系数和泥饼黏滞系数分别为0.1224和0.0875。该钻井液具有良好的抗温性能和稳定性,对深部油气的开发具有重要意义。

     

  • 图  1  抗高温两性离子聚合物的红外光谱

    图  2  抗高温阴离子聚合物的红外光谱

    图  3  聚合物协同增黏机理示意图

    图  4  钻井液复数模量与剪切应力的关系

    图  5  抗超高温高效封堵剂分子结构

    图  6  抗超高温高效封堵剂SEM图像

    图  7  抗超高温高效封堵剂红外光谱

    图  8  抗超高温高效封堵剂悬浮液的   压力传递实验(240 ℃、16 h)

    图  9  高温高压滤失泥饼

    图  10  抗超高温聚合物水基钻井液在高温高压流变仪表面的黏附情况

    图  11  常规聚磺钻井液高温高压  流变仪表面的黏附情况

    图  12  长期沉降稳定性

    表  1  膨润土加量对体系性能的影响

    钻井液配方实验条件AV/mPa·sPV/mPa·sYP/Pa
    6%两性离子聚合物老化前50.045.05.0
    老化后29.028.01.0
    6%阴离子聚合物老化前54.548.06.5
    老化后33.032.50.5
    4%两性离子聚合物+
    2%阴离子聚合物
    老化前52.046.06.0
    老化后45.041.04.0
      注:老化条件为220 ℃,老化72 h。
    下载: 导出CSV

    表  2  抗超高温220 ℃聚合物钻井液流变滤失性能

    条件AV/
    mPa·s
    PV/
    mPa·s
    YP/
    Pa
    Gel/
    Pa/Pa
    FLAPI/
    mL
    FLHTHP/
    mL(220 ℃)
    pH
    老化前53.0476.04/60.29.38
    220 ℃、16 h47.0425.03/42.29.68.14
    220 ℃、24 h48.5435.53/41.210.68.13
    下载: 导出CSV

    表  3  钻井液经长时间老化后的流变滤失性能

    条件AV/
    mPa·s
    PV/
    mPa·s
    YP/
    Pa
    Gel/
    Pa/Pa
    FLAPI/
    mL
    FLHTHP/mL
    (220 ℃)
    pH
    220 ℃老化24 h48.5435.53/41.210.68.13
    重新加药后62.5557.55/508.79
    继续老化72 h52.0466.03/53.213.48.74
    下载: 导出CSV

    表  4  抗超高温聚合物水基钻井液在高矿化度污染下的流变、滤失性能

    污染类型条件AV/
    mPa·s
    PV/
    mPa·s
    YP/
    Pa
    Gel/
    Pa/Pa
    FLAPI/
    mL
    FLHTHP/mL
    (220 ℃)
    pH
    2000 mg/L Ca2+老化前53.0476.04/5010.14
    220 ℃、16 h54.0495.06/81.810.49.24
    190 000 mg/L Cl-老化前54.0459.03/60.210.25
    220 ℃、16 h47.5407.51/21.49.48.79
    2000 mg/L Ca2++
    190 000 mg/L Cl-
    老化前53.5458.53/5010.12
    220 ℃、16 h50.0428.07/81.811.69.12
    下载: 导出CSV

    表  5  抗超高温聚合物水基钻井液高温高压流变性数据

    实验条件AV/
    mPa·s
    PV/
    mPa·s
    YP/
    Pa
    Gel/
    Pa/Pa
    120 ℃×93 MPa31.827.64.01.2/2.5
    140 ℃×108 MPa29.126.22.81.2/1.7
    165 ℃×130 MPa26.424.51.81.2/1.4
    180 ℃×139 MPa24.822.81.91.2/1.8
    200 ℃×154 MPa22.820.91.81.3/1.9
    220 ℃×169 MPa22.420.51.81.3/1.9
      注:样品升温至120 ℃开始测试。
    下载: 导出CSV

    表  6  常规聚磺钻井液高温高压流变性数据

    实验条件AV/
    mPa·s
    PV/
    mPa·s
    YP/
    Pa
    Gel/
    Pa/Pa
    120 ℃×93 MPa18.614.73.71.0/3.0
    140 ℃×108 MPa17.414.33.01.2/5.0
    165 ℃×130 MPa16.513.13.32.6/8.1
    180 ℃×139 MPa16.512.04.33.9/9.6
    200 ℃×154 MPa17.610.76.67.0/10.7
    220 ℃×169 MPa22.09.012.514.8/16.2
      注:样品升温至120 ℃开始测试。
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-11-27
  • 修回日期:  2024-01-10
  • 刊出日期:  2024-04-02

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