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川东北高含硫气藏钻井液抗硫工艺优化与应用

肖金裕 周华安 暴丹 冯学荣 卢浩 杨兰平 汪伟

肖金裕,周华安,暴丹,等. 川东北高含硫气藏钻井液抗硫工艺优化与应用[J]. 钻井液与完井液,2023,40(6):718-724 doi: 10.12358/j.issn.1001-5620.2023.06.004
引用本文: 肖金裕,周华安,暴丹,等. 川东北高含硫气藏钻井液抗硫工艺优化与应用[J]. 钻井液与完井液,2023,40(6):718-724 doi: 10.12358/j.issn.1001-5620.2023.06.004
XIAO Jinyu, ZHOU Huaan, BAO Dan, et al.Optimization of sulfur-resistant drilling fluid techniques and its application in drilling high sulfur content reservoirs in northeast Sichuan[J]. Drilling Fluid & Completion Fluid,2023, 40(6):718-724 doi: 10.12358/j.issn.1001-5620.2023.06.004
Citation: XIAO Jinyu, ZHOU Huaan, BAO Dan, et al.Optimization of sulfur-resistant drilling fluid techniques and its application in drilling high sulfur content reservoirs in northeast Sichuan[J]. Drilling Fluid & Completion Fluid,2023, 40(6):718-724 doi: 10.12358/j.issn.1001-5620.2023.06.004

川东北高含硫气藏钻井液抗硫工艺优化与应用

doi: 10.12358/j.issn.1001-5620.2023.06.004
基金项目: 川庆钻探工程有限公司科技攻关项目“川东北高含硫气藏钻井液抗硫及承压堵漏关键技术深化研究与试验”(CQ2021B-46-Z2-3)。
详细信息
    作者简介:

    肖金裕,高级工程师,1969年生,毕业于石油大学(华东)开发系泥浆专业,现在主要从事现场钻井液技术应用研究工作。E-mail:xiaojy_sc@cnpc.com.cn

  • 中图分类号: TE254.3

Optimization of Sulfur-Resistant Drilling Fluid Techniques and Its Application in Drilling High Sulfur Content Reservoirs in Northeast Sichuan

  • 摘要: 川东北地区铁山坡、罗家寨、渡口河、七里峡、正坝和菩萨殿气田飞仙关组气藏属于高含硫气藏~特高含硫气藏。针对川东北高含硫气藏地质特点和钻井液技术难点分析,提出钻井液抗硫工艺优化对策,并通过室内实验优选出抗硫钻井液体系配方,进行了钻井液黏度、pH值、碱度、油水比对吸收H2S效果的评价。研究结果表明,水基钻井液和油基钻井液优化抗硫工艺后具有较强的抗硫除硫能力。该抗硫钻井液体系在坡002-H4井和罗家24井现场试用非常成功,钻井周期大幅缩短、机械钻速明显提高,平均井眼扩大率降低,抗硫除硫效果明显,能够满足高含硫井钻进的要求,在下川东高含硫地层钻井方面有着广阔的应用前景。

     

  • 图  1  水基钻井液黏度对吸收H2S效果的影响

    图  2  水基钻井液pH值对吸收H2S效果的影响

    图  3  钻井液黏度对吸收H2S效果的影响

    图  4  碱度对油基钻井液吸收H2S效果的影响

    图  5  油水比对吸收H2S效果的影响

    表  1  抗硫水基钻井液体系配方优选实验

    配方老化条件ρ/
    g·cm−3
    FLAPI/
    mL
    Gel/
    Pa/Pa
    pHHTHPφ600/φ300φ200/φ100φ6/φ3备注
    FL/mLk/mm
    1#130 ℃、8 h1.623.21.5/8.09.511.04.590/5338/223/2杯底无沉淀,玻棒直接到
    底,有清脆撞击声
    2#130 ℃、8 h1.623.22.5/12.59.510.85.0120/7051/314/3开罐比1#稠,杯底无沉淀,
    玻棒到底,有清脆撞击声
    3#130 ℃、8 h1.603.60.5/4.09.511.25.558/3121/122/1玻棒不能到底,杯底有5 mm
    沉淀,搅拌1 min后即散
    4#130 ℃、8 h1.593.40.5/4.0109.83.548/2619/122/1玻棒直接到底,有清脆撞击声,
    静置后无沉淀
    5#130 ℃、8 h1.603.00/0.251010.87.034/1913/91/1玻棒不能到底,杯底有3 mm沉
    淀,搅拌即散,静置后有沉淀
    下载: 导出CSV

    表  2  抗硫油基钻井液体系配方优选实验

    序号配方实验
    条件
    PV/
    mPa·s
    YP/
    Pa
    Gel/
    Pa/Pa

    FLHTHP/
    mL
    φ600/
    φ300
    φ200/
    φ100
    φ6/
    φ3
    6#白油+3%有机土+5%三合一乳化剂HFMO+5%降滤失剂HFLO+5%CaO+3%RF-9+5%超细钙+5%超微重晶石+35%CaCl2盐水(90∶10)+重晶石粉65 ℃191.01/33.51240/2115/82/1
    老化后201.51.5/33.51243/2317/102/1
    7#白油+3%有机土+6%HFMO+5%HFLO+3%CaO+
    3%RF-9+5%超细钙+5%超微重晶石+
    35%CaCl2盐水(85∶15)+重晶石粉
    65 ℃191.01.5/33.51440/2115/92/1
    老化后213.01.5/33.51448/2719/112/1
    8#白油+7%有机土+6%HFMO+7%HFLO+3%CaO+5%
    RF-9+6%超细钙+5%超微重晶石+3%除硫剂
    JD-2+40%CaCl2盐水(85∶15)+重晶石粉
    65 ℃4314.56/93.51.2115/7256/3814/12
    9#白油+7%有机土+6%HFMO+7%HFLO+3%CaO+5%
    RF-9+6%超细钙+5%超微重晶石+3%JD-2+30%CaCl2
    盐水(85∶15)+重晶石粉
    65 ℃478.06/83.01.0110/6353/3613/12
    10#白油+6%有机土+6%HFMO+7%HFLO+5%CaO+5%
    RF-9+6%超细钙+5%超微重晶石+3%JD-2+30%CaCl2
    盐水(85∶15)+重晶石粉
    65 ℃309.03/63.51.678/4838/258/7
    老化后257.53/53.51.665/4030/207/6
      注:钻井液密度为1.22~1.25 g/cm3;老化条件为120 ℃、24 h;10#配方老化前和老化后的破乳电压分别为891、980 V。
    下载: 导出CSV

    表  3  改变10#配方钻井液中有机土  加量后不同体系的流变性能

    体系AV/
    mPa·s
    PV/
    mPa·s
    YP/
    Pa
    10'#3.02.50.5
    10"# 8.57.01.5
    10#17.510.07.5
    下载: 导出CSV

    表  4  坡002-H4井应用井段抗硫水基钻井液的性能

    井深/mρ/(g·cm−3FV/sFLAPI/mLPV/mPa·sYP/PaYP/PV/(Pa/mPa·s)pH
    2367~26561.4345~493.4~4.024~274.0~5.00.015~0.20810.0~10.5
    2656~38841.43~1.7345~532.8~3.619~403.5~9.00.023~0.19410.5
    39511.76502.8357.00.20010.5
    下载: 导出CSV

    表  5  坡002-H4井应用井段抗硫油基钻井液的性能

    开次井深/mρ/(g·cm−3FV/sFLHTHP/mLPV/mPa·sYP/PaYP/PV/(Pa/mPa·s)碱度ES/V
    导眼井3958~44351.00~1.0557~592.0~2.815~193.8~4.80.220~0.2502.7~3.8416~578
    水平井3966~40901.2055~582.2~2.420~224.3~5.20.196~0.2643.6~3.9540~640
    4123~42381.03~1.05572.2~2.420~223.8~4.30.170~0.2103.0~4.0410~505
    4238~50561.08~1.0956~571.6~2.019~213.8~5.20.200~0.2706.2~7.0590~1020
    下载: 导出CSV

    表  6  罗家24井应用井段抗硫水基钻井液性能

    井深
    m
    ρ/
    g·cm−3
    FV/
    s
    FLAPI/
    mL
    PV/
    mPa·s
    YP/
    Pa
    YP/PV/
    Pa/mPa·s
    pH
    23571.19474.0214.00.19010.0
    25001.18452.8173.00.17610.0
    2620~
    2829
    1.1845~
    50
    2.6~
    3.0
    15~
    20
    3.0~
    6.5
    0.19~
    0.32
    10.0
    29441.20453.2164.50.28110.5
    下载: 导出CSV

    表  7  罗家24井应用井段抗硫油基钻井液性能

    开次井深mρ/(g·cm−3)FV/sFLHTHP/mLPV/mPa·sYP/PaGel/(Pa/Pa)碱度ES/V油水比
    四开29841.20662.2338.03/43.051080∶20
    32551.23652.0297.04/64.552080∶20
    34061.25632.0298.03/54.561080∶20
    3615~40161.24592.0266.0~8.52.5~3/3.5~45.0585~68580∶20
    五开4019~48081.1056~581.4~2.021~276.0~8.02.5~3/3~54.0~5.0580~63880∶20
    4944~52501.11~1.1256~571.624~296.5~8.03/45.0627~75380∶20
    下载: 导出CSV
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  • 收稿日期:  2023-05-14
  • 修回日期:  2023-06-11
  • 刊出日期:  2023-12-30

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