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一种综合固化和桥接性能的堵漏体系

姜旭 柳华杰 马小龙 赵建胜 苏前荣 步玉环 郭胜来

姜旭,柳华杰,马小龙,等. 一种综合固化和桥接性能的堵漏体系[J]. 钻井液与完井液,2023,40(6):798-805 doi: 10.12358/j.issn.1001-5620.2023.06.015
引用本文: 姜旭,柳华杰,马小龙,等. 一种综合固化和桥接性能的堵漏体系[J]. 钻井液与完井液,2023,40(6):798-805 doi: 10.12358/j.issn.1001-5620.2023.06.015
JIANG Xu, LIU Huajie, MA Xiaolong, et al.A lost circulation control slurry with solidifying and bridging functions[J]. Drilling Fluid & Completion Fluid,2023, 40(6):798-805 doi: 10.12358/j.issn.1001-5620.2023.06.015
Citation: JIANG Xu, LIU Huajie, MA Xiaolong, et al.A lost circulation control slurry with solidifying and bridging functions[J]. Drilling Fluid & Completion Fluid,2023, 40(6):798-805 doi: 10.12358/j.issn.1001-5620.2023.06.015

一种综合固化和桥接性能的堵漏体系

doi: 10.12358/j.issn.1001-5620.2023.06.015
基金项目: 国家自然基金“深水油气井固井水泥传质传热过程中浅层水合物稳定机理”(51974355)。
详细信息
    作者简介:

    姜旭,硕士研究生,2000年生,就读于中国石油大学(华东)油气井工程专业,研究方向为钻完井工程。电话15621010338;E-mail:s21020010@s.upc.edu.cn。

    通讯作者:

    柳华杰,副教授,博士,1986年生,毕业于中国石油大学(华东)油气井专业,现在从事固完井领域研究工作。电话15265200293;E-mail:liuhuajie@upc.edu.cn。

  • 中图分类号: TE282

A Lost Circulation Control Slurry with Solidifying and Bridging Functions

  • 摘要: 针对桥堵浆难以胶结会返吐井筒及触变水泥浆耐漏失压差能力弱,难以有效解决复杂恶性漏失的难题,在对触变水泥浆体系以及桥浆堵漏体系研究的基础上,综合桥浆堵漏和固化堵漏的优点,将二者相结合,研制了一种综合固化和桥接性能的复杂堵漏体系。通过对外加剂的研选,确定了具有良好流变性和触变性的触变水泥浆体系,其中新型触变剂LTA-1的加入对水泥浆稠化时间影响较小,且能增加抗压强度。并通过“狭缝实验”确定桥浆堵漏体系配方。最后根据稠化性能及强度评价,确定该复杂堵漏体系的配方比例为触变水泥浆∶桥浆堵漏体系=2∶1。在满足施工安全的基础上,该堵漏体系能够封堵3~5 mm裂缝块模拟的裂缝性漏失地层和6 mm滚珠模拟的大孔道漏失地层,承压强度大于14 MPa。该体系在满足施工安全的基础上,具有良好的触变性能和堵漏性能,对解决复杂地层的漏失问题起到良好的效果。

     

  • 图  1  触变剂LTA-1加量对水泥浆体流变性和触变性影响(25 ℃×0.1 MPa)

    图  2  触变剂LTA-1加量对水泥浆体流变性和触变性影响(80 ℃×0.1 MPa)

    图  3  早强剂强度发展对比实验结果(60 ℃×0.1 MPa)

    图  4  触变水泥浆体系水泥石强度发展实验结果

    图  5  该复杂堵漏体系API失水性能

    图  6  该复杂堵漏体系固化强度评价

    表  1  触变水泥浆体系基本性能

    序号配方ρ/(g·cm−3实验条件t稠化/min初始稠度/Bc流动度/cmFL/mL游离液/mLρ/(g·cm−3
    1#基础配方1.9070 ℃×30 MPa12220182800.00
    2#基础配方+0.5%GH-91.9090 ℃×50 MPa26518204400.00
    下载: 导出CSV

    表  2  25 ℃和80 ℃下水泥浆流变性及触变性

    T/℃φ600φ300φ200φ100φ6φ3静置1 min
    φ3
    静置10 min
    φ3
    252801731328118163565
    802201471147322204380
    下载: 导出CSV

    表  3  不同比例堵漏材料堵漏效果评价

    堵漏类型橡胶/
    %
    锯末/
    %
    棉纤维/
    %
    FL/mL堵漏效果
    25 ℃80 ℃
    1 mm缝3117590堵不住
    1 mm缝4216068基本堵住
    1 mm缝5211018完全堵住
    2 mm缝5211522完全堵住
    2 mm孔5211624完全堵住
    4 mm孔5212030完全堵住
    注:配方为水+8%膨润土+0.2%Na2CO3
    下载: 导出CSV

    表  4  该复杂堵漏体系堵漏配方确定实验

    1#配方∶
    2#配方
    ρ/
    g·cm−3
    流动度/
    cm
    养护不同时间
    的常温强度
    备注
    1∶11.5220无强度/24 h流动性好
    1∶21.5418无强度/24 h流动性好,有触变性
    2∶11.61196.30 MPa/15 h流动性好,有触变性
    2∶1.51.62145.50 MPa/19 h浆体太稠
    下载: 导出CSV

    表  5  该复杂堵漏体系稠化性能评价

    实验条件t稠化/min初始稠度/Bct过渡/min
    60 ℃×30 MPa209209
    80 ℃×40 MPa2501914
    90 ℃×50 MPa2601812
    110 ℃×55 MPa3121810
    下载: 导出CSV

    表  6  该复杂堵漏体系流变性及触变性能评价

    T/℃φ600φ300φ200φ100φ6φ3nK/
    Pa·sn
    静切力
    差值/Pa
    252701659845400.9470.26056
    80280142985615120.8700.24840
    下载: 导出CSV

    表  7  模拟裂缝性和大孔道漏失层的实验结果

    裂缝T/
    挤入压力/
    MPa
    击穿压力/
    MPa
    FL/
    mL
    3~5 mm缝宽3031515
    8041818
    11052224
    6 mm滚珠3021417
    8051620
    11082036
    下载: 导出CSV
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  • 收稿日期:  2023-07-25
  • 修回日期:  2023-09-01
  • 刊出日期:  2023-12-30

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