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分级堵漏技术在鄂尔多斯盆地东部的应用

赵宏波 杨松 陈国飞 李兴宝 王建峰 齐鹏飞

赵宏波,杨松,陈国飞,等. 分级堵漏技术在鄂尔多斯盆地东部的应用[J]. 钻井液与完井液,2021,38(5):583-592 doi: 10.12358/j.issn.1001-5620.2021.05.007
引用本文: 赵宏波,杨松,陈国飞,等. 分级堵漏技术在鄂尔多斯盆地东部的应用[J]. 钻井液与完井液,2021,38(5):583-592 doi: 10.12358/j.issn.1001-5620.2021.05.007
ZHAO Hongbo, YANG Song, CHEN Guofei, et al.Study and application of mud loss control technique with graded lcms in the east of Ordos basin[J]. Drilling Fluid & Completion Fluid,2021, 38(5):583-592 doi: 10.12358/j.issn.1001-5620.2021.05.007
Citation: ZHAO Hongbo, YANG Song, CHEN Guofei, et al.Study and application of mud loss control technique with graded lcms in the east of Ordos basin[J]. Drilling Fluid & Completion Fluid,2021, 38(5):583-592 doi: 10.12358/j.issn.1001-5620.2021.05.007

分级堵漏技术在鄂尔多斯盆地东部的应用

doi: 10.12358/j.issn.1001-5620.2021.05.007
基金项目: 中国石油勘探与生产分公司攻关项目“致密油气藏提速提效钻完井技术研究”(1902-3-2)资助
详细信息
    作者简介:

    赵宏波,高级工程师,1976年生, 1999年毕业于江汉石油学院地质专业,主要从事地质勘探、钻井、完井和油气藏开发方面的研究工作。E-mail:zhb722_cq@petrochina.com.cn

  • 中图分类号: TE282

Study and Application of Mud Loss Control Technique with Graded LCMs in the East of Ordos Basin

  • 摘要: 为了解决鄂尔多斯盆地东部刘家沟组-石千峰组地层的井漏问题,通过扫描电镜分析岩心样品、X衍射分析岩屑样品和对区域地质资料的研究,发现高含伊利石和绿泥石、低含高岭土和蒙脱石的刚性地层遇水失稳和网状缝发育是引起该区井漏严重和堵漏困难的主要原因。从抑制裂缝壁遇水失稳和用含不同直径刚性颗粒的桥塞型复合堵漏剂封堵不同宽度裂缝的思路出发,通过实验室优化和室内模拟实验,形成了分级堵漏剂配方及分级堵漏技术。分级堵漏剂主要成分包含0.4%~0.5%生物凝胶增稠剂、5%~7%钻井液用复合堵漏剂Ⅱ和含刚性颗粒不等的桥塞型复合堵漏剂。通过8口井现场应用表明,分级堵漏技术能够封堵裂缝宽度小于6 mm的裂缝性复杂井漏,堵漏后漏点地层承压高,满足后续钻井施工承压要求,且在堵漏后至完井期间未发生井漏。研究结果表明,分级堵漏技术适合鄂尔多斯盆地东部刘家沟组-石千峰组复杂裂缝性井漏,值得进一步推广。

     

  • 图  1  扫描电镜观察大吉50井刘家沟组(井深2003.12 m)岩心裂缝和黏土矿物

    图  2  楔形封板实验中不同分级堵漏剂配方失水量随压强的变化

    注:①一级堵漏剂1#配方,楔形封层数为单层,楔形封开度 为1 mm×0.5 mm;②二级堵漏剂2#配方,楔形封层数为双层,楔形封开度为2 mm×1 mm /1 mm×0.5 mm;③三级堵漏剂3#配方,楔形封层数为双层,楔形封开度为4 mm×3 mm /3 mm×2 mm;④三级堵漏剂3#配方,楔形封层数为双层,楔形封开度为2 mm×1 mm /1 mm×0.5 mm;⑤四级堵漏剂4#配方,楔形封层数为双层,楔形封开度为6 mm×5 mm/5 mm×4 mm;⑥四级堵漏剂4#配方,楔形封层数为双层,楔形封开度为4 mm×3 mm /3 mm×2 mm;⑦四级堵漏剂4#配方,楔形封层数为双层,楔形封开度为2 mm×1 mm /1 mm×0.5 mm;压降均为0

    图  3  三级堵漏剂堵漏时井口压力随时间的变化

    表  1  刘家沟组-石千峰组砂岩岩屑中各种矿物含量

    样号地层石英/
    %
    钾长
    石/ %
    斜长
    石/%
    方解
    石/%
    白云
    石/%
    赤铁
    矿/%
    黏土矿物
    总量/%
    1#刘家沟组48916121212
    2#507274129
    3#千24241681425
    4#千44422221425
    5#千551222322
    平均值475.520.65.61318.6
    下载: 导出CSV

    表  2  X衍射分析岩石基质中不同黏土矿物含量结果

    样号地层高岭
    石/%
    绿泥
    石/%
    伊利
    石/%
    伊/蒙混
    层/%
    伊/蒙混
    层比/%
    1#刘家沟组57355320
    2#57355320
    3#千234415220
    4#千412435420
    5#千535355720
    平均值3.4537.853.820
    下载: 导出CSV

    表  3  一级堵漏浆性能随DRP-06增稠剂加量的变化

    DRP-06/
    %
    FV/
    s
    ρ/
    g·cm−3
    FL/
    mL
    现象黏度
    0.2321.0219.6黏度低,悬浮性差,静置24 h全部分层
    0.3341.0217.0黏度较低,悬浮性一般,静置24 h有析水偏低
    0.4411.0211.2黏度较高,悬浮性较好,静置24 h无析水适中
    0.5431.0210.4黏度较高,悬浮性较好,静置24 h无析水适中
    0.6501.0216.8黏度高,悬浮性好,静置24 h无析水偏高
    0.7511.0216.6黏度高,悬浮性好,静置24 h无析水偏高
    下载: 导出CSV

    表  4  一级堵漏浆性能随钻井液用 复合堵漏剂Ⅱ加量的变化

    复合堵漏
    剂Ⅱ/%
    FLAPI/
    mL
    现象结论
    217.0黏度较低,悬浮性一般,
    静置12 h有沉降
    悬浮性差
    316.4黏度较低,悬浮性一般,
    静置12 h有沉降
    悬浮性差
    416.8黏度较低,悬浮性一般,
    静置12 h有析水
    悬浮性差
    510.4黏度较高,悬浮性较好,
    静置12 h少量沉降
    适中
    612.0黏度较高,悬浮性较好,
    静置12 h无沉降
    适中
    711.2黏度高,悬浮性较好,
    静置12 h无沉降
    可用
    89.5黏度高,悬浮性好,
    静置12 h无沉降
    可用
    下载: 导出CSV

    表  5  一级堵漏浆性能随复合堵漏剂加量的变化

    复合堵漏剂/
    %
    FLAPI/
    mL
    现象黏度
    28.2黏度较高,悬浮性较好,
    静置12 h少量沉降
    较低
    38.6黏度较高,悬浮性较好,
    静置12 h少量沉降
    较低
    410.6黏度较高,悬浮性较好,
    静置12 h少量沉降
    较低
    58.0黏度较高,悬浮性较好,
    静置12 h无沉降
    适中
    67.4黏度较高,悬浮性较好,
    静置12 h无沉降
    适中
    77.2黏度较高,悬浮性较好,
    静置12 h无沉降
    适中
    86.6黏度较高,悬浮性较好,
    静置12 h无沉降
    适中
    99.4黏度高,悬浮性好,
    静置12 h无沉降
    可用
    108.4黏度高,悬浮性好,
    静置12 h无沉降
    可用
    下载: 导出CSV

    表  6  二级堵漏浆性能随桥塞复合型堵漏剂Ⅰ加量的变化

    复合型堵
    漏剂Ⅰ/%
    FLAPI/
    mL
    状态结论
    313.0悬浮性较好,静置12 h无沉降可用
    410.0悬浮性较好,静置12 h无沉降可用
    511.0悬浮性较好,静置12 h无沉降可用
    610.0悬浮性较好,静置12 h无沉降可用
    710.5悬浮性较好,静置12 h无沉降可用
    810.0悬浮性较好,静置12 h无沉降可用
    913.5悬浮性较好,静置12 h无沉降可用
    1012.0悬浮性稍差,静置12 h少量沉降可用
    下载: 导出CSV

    表  7  三级堵漏浆悬浮性能随桥塞 复合型堵漏剂Ⅱ含量的变化

    复合型堵
    漏剂Ⅱ/%
    FLAPI/
    mL
    状态结论
    316.0悬浮性较好,静置12 h无沉降可用
    412.0悬浮性较好,静置12 h无沉降适中
    513.2悬浮性较好,静置12 h有少量沉降适中
    611.6悬浮性较好,静置12 h有少量沉降适中
    712.4悬浮性较好,静置12 h有少量沉降适中
    811.8悬浮性较好,静置12 h有少量沉降适中
    915.8悬浮性较好,静置12 h沉降增多可用
    1013.8悬浮性较差,静置12 h沉降增多可用
    下载: 导出CSV

    表  8  四级堵漏剂配方统计表


    堵漏
    颗粒类型堵漏剂配方颗粒
    直径/
    mm
    封堵裂
    缝宽度/
    mm
    1#一级增稠材料+
    纤维材料
    水+(0.4%~05%)生物凝胶增稠剂DRP-06+(5%~7%)钻井液用复合堵漏剂Ⅱ+(5%~8%)复合堵漏剂≤0.5≤0.6
    2#二级增稠材料+
    纤维材料+
    刚性颗粒
    1#+(4%~8%)桥塞复合型堵漏剂Ⅰ≤1.0≤1.4
    3#三级2#+(4%~8%)桥塞复合型堵漏剂Ⅱ≤2.4≤3.4
    4#四级3#+(4%~8%)桥塞复合型堵漏剂Ⅲ≤5≤6.0
    下载: 导出CSV
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  • 收稿日期:  2021-04-11
  • 刊出日期:  2021-10-01

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