超深井侧钻段泥岩井壁失稳分析

程万, 金衍, 卢运虎

程万, 金衍, 卢运虎. 超深井侧钻段泥岩井壁失稳分析[J]. 石油钻探技术, 2014, 42(6): 53-58. DOI: 10.11911/syztjs.201406011
引用本文: 程万, 金衍, 卢运虎. 超深井侧钻段泥岩井壁失稳分析[J]. 石油钻探技术, 2014, 42(6): 53-58. DOI: 10.11911/syztjs.201406011
Cheng Wan, Jin Yan, Lu Yunhu. Wellbore Instability Mechanism of Deep Sidetracking Wells in Mudstone Strata[J]. Petroleum Drilling Techniques, 2014, 42(6): 53-58. DOI: 10.11911/syztjs.201406011
Citation: Cheng Wan, Jin Yan, Lu Yunhu. Wellbore Instability Mechanism of Deep Sidetracking Wells in Mudstone Strata[J]. Petroleum Drilling Techniques, 2014, 42(6): 53-58. DOI: 10.11911/syztjs.201406011

超深井侧钻段泥岩井壁失稳分析

基金项目: 

国家自然科学青年"高温高应力盐膏层弯曲井筒围岩失稳机理与控制理论研究"(编号:51204191)和国家科技重大专项课题"钻井工程设计和工艺软件"(编号:2011ZX05021-006)资助.

详细信息
    作者简介:

    程万(1987-), 男, 湖北麻城人, 2010年毕业于长江大学石油工程专业, 油气井工程专业在读博士研究生, 主要从事非常规油气钻井、完井过程中的岩石力学与工程技术研究.

    通讯作者:

    金衍, jinyan-cup@163.com.

  • 中图分类号: TE21

Wellbore Instability Mechanism of Deep Sidetracking Wells in Mudstone Strata

  • 摘要: 为了解决西部超深硬脆性泥岩地层侧钻过程中井壁易垮塌的难题,从矿物特征及钻井液作用下地层强度的变化规律出发,确定了井壁失稳原因,考虑了层理面产状、井眼轨迹及地应力的综合影响,根据桑塔木组井壁围岩强度破坏条件建立了造斜井段井壁失稳地质力学模型.利用提出的井壁稳定力学模型分析可得,TKX-CH井侧钻段泥岩造斜初期坍塌压力当量密度为1.22 kg/L,实钻采用钻井液密度1.12 kg/L,井下掉块严重;井斜角达到58°时,将钻井液密度降至1.11 kg/L,井下掉块即得到抑制.现场试验表明,相同井斜角和侧钻方位角条件下,随着差应力比值的增大以及泥岩裸露在钻井液中时间的增长,维持井壁稳定的钻井液密度增大.研究认为,钻井设计时应根据地应力状态优选合理的造斜方位,以有效规避地层井壁围岩坍塌失稳风险高的井段,降低安全钻进风险.
    Abstract: To solve the wellbore instability problem of a deep sidetracking well in hard-brittle mudstone strata of west China,this paper indicated the mechanism of wellbore instability considering the effects of both minerals and drilling mud on rock compressive strength.Based on failure condition of wellbore,a model of well instability was built considering the contributions of bedding plane occurrence,in-situ stress,and well trajectory,etc.The calculations of this model for the sidetracking mudstone segment in Well TKX-CH showed that the collapse pressure is 1.11 kg/L.Serious rock-collapse happened in practice when drilling mud was 1.12 kg/L.This situation improved as the drilling mud density decreased to 1.1 kg/L,when the deviation angle reached to 58°.When the sidetracking orientation and deviation angle are constant,the density of drilling mud to keep well stable increases as the ratio of stress difference increases and as exposure time of mudstone inside drilling mud increases.Therefore,in order to decrease the risk of borehole instability,in-situ stress,bedding planes and exposure time of mudstone should be considered systematically in drilling design.
  • [1] 周伟,耿云鹏,石媛媛.塔河油田超深井侧钻工艺技术探讨[J].钻采工艺,2010,33(4):108-111. Zhou Wei,Geng Yunpeng,Shi Yuanyuan.Discussion on ultra-deep sidetracking technology in Tahe Oilfield[J].Drilling Production Technology,2010,33(4):108-111.
    [2] 何伟国,唐明,吴柳根.塔河油田深层侧钻水平井膨胀套管钻井完井技术[J].石油钻探技术,2013,41(5):62-66. He Weiguo,Tang Ming,Wu Liugen.Expandable casing drilling and completion technology in deep sidetracked horizontal wells of Tahe Oilfield[J].Petroleum Drilling Techniques,2013,41(5):62-66.
    [3] 金衍,陈勉.井壁稳定力学[M].北京:科学出版社,2012:1-2. Jin Yan,Chen Mian.Mechanics of wellbore stability[M].Beijing:Science Press,2012:1-2.
    [4] 金衍,陈勉,陈治喜,等.弱面地层的直井井壁稳定力学模型[J].钻采工艺,1999,22(3):13-14.Jin Yan,Chen Mian,Chen Zhixi,et al.Mechanics model of sidewall stability of straight wells drilled through weakly consolidated formations[J].Drilling Production Technology,1999,22(3):13-14.
    [5] 黄荣樽,陈勉,邓金根,等.泥页岩井壁稳定力学与化学的耦合研究[J].钻井液与完井液,1995,12(3):15-21,25. Huang Rongzun,Chen Mian,Deng Jingen,et al.Study on shale stability of wellbore by mechanics coupling with chemistry method[J].Drilling Fluid Completion Fluid,1995,12(3): 15-21,25.
    [6]

    Aadony B S.Modeling of the stability of highly inclined boreholes in anisotropic rock formations[R].SPE 16526,1998.

    [7] 薛世峰,马国顺,葛洪魁,等.液-固-水化耦合形式的井眼稳定性模型研究[J].石油钻探技术,2007,35(1):41-44. Xue Shifeng,Ma Guoshun,Ge Hongku,et al.Study of a fluid-solid-wetting coupling wellbore stability model[J].Petroleum Drilling Techniques,2007,35(1):41-44.
    [8] 王倩,王刚,蒋宏伟,等.泥页岩井壁稳定耦合研究[J].断块油气田,2012,19(4):517-521. Wang Qian,Wang Gang,Jiang Hongwei,et al.Study on shale wellbore stability coupling[J].Fault-Block Oil and Gas Field,2012,19(4):517-521.
    [9]

    Hale A H,Mody F K.Experimental investigation of the influence of chemical potential on wellbore stability[R].IADC/SPE 23885,1992.

    [10]

    Tan C P,Richards G,Rahman S S.Managing physical-chamical wellbore instability in shale with the chemical potential mechanism[R].SPE 36971,1996.

    [11] 卢运虎,陈勉,安生.页岩气井脆性页岩井壁裂缝扩展机理[J].石油钻探技术,2012,40(4):13-16. Lu Yunhu,Chen Mian,An Sheng.Brittle shale wellbore fracture propagation mechanism[J].Petroleum Drilling Techniques,2012,40(4):13-16.
    [12]

    van Oort Eric,Hale A H,Mody F K,et al.Transport in shales and the design of improved water-based shale drilling fluids[R].SPE 28309,1996.

    [13]

    Chen Guizhong,Chenevert M E,Sharma M M,et al.A study of wellbore stability in shales including poroelastic,chemical,and thermal effects[J].Journal of Petroleum Science and Engineering,2003,38(3/4):167-176.

    [14] 卢运虎,陈勉,金衍,等.钻井液浸泡下深部泥岩强度特征试验研究[J].岩石力学与工程学报,2012,31(7):1399-1405. Lu Yunhu,Chen Mian,Jin Yan,et al.Experimental study of strength properties of deep mudstone under drilling fluid soaking[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(7):1399-1405.
    [15]

    Lu Yunhu,Chen Mian,Jin Yan.A mechanical model of borehole stability for weak planeformation under porous flow[J].Petroleum Science Technology,2012,30(15):1629-1638.

  • 期刊类型引用(13)

    1. 陈小元,吴波,史怀忠,熊超,屈子骁,王委,周志刚. 涡轮驱动式振荡旋转套管引鞋研制及应用. 石油机械. 2025(01): 55-61 . 百度学术
    2. 于小波,万发明,朱云波,和传健,马广来. 国内外漂浮工具典型结构及攻关建议. 石油和化工设备. 2024(02): 46-49+57 . 百度学术
    3. 李高刚,魏祥高,汪孝贵,唐健,芦宏斌,马兰波,张亥先,杨海斌. 苏里格气田长水平段水平井钻井关键技术——以S77-35-H5井为例. 天然气技术与经济. 2024(02): 8-13 . 百度学术
    4. 王磊. 水平井漂浮下套管技术研究与应用. 西部探矿工程. 2023(04): 80-82 . 百度学术
    5. 张新亮,金磊,张瑞,张冠林,冯丽莹. 中深层水平井双漂浮下套管关键技术. 石油钻探技术. 2023(06): 57-63 . 本站查看
    6. 史配铭,倪华峰,石崇东,王学枫,王万庆,屈艳平. 苏里格致密气藏超长水平段水平井钻井完井关键技术. 石油钻探技术. 2022(01): 13-21 . 本站查看
    7. 何立成. 全通径漂浮接箍工具的研究与应用. 中国石油大学胜利学院学报. 2022(02): 83-86 . 百度学术
    8. 张冠林,赵聪,梁晓阳,宋剑鸣,曹博,郑杜建. 尾管漂浮减阻系统设计. 钻采工艺. 2021(03): 76-79 . 百度学术
    9. 江乐,梅明佳,段宏超,魏周胜,李勇,吴晋波. 华H50-7井超4000 m水平段套管下入研究与应用. 石油机械. 2021(08): 30-38 . 百度学术
    10. 柳伟荣,倪华峰,王学枫,石仲元,谭学斌,王清臣. 长庆油田陇东地区页岩油超长水平段水平井钻井技术. 石油钻探技术. 2020(01): 9-14 . 本站查看
    11. 李社坤,周战云,任文亮,秦克明,侯平. 大位移水平井旋转自导式套管浮鞋的研制及应用. 石油钻采工艺. 2017(03): 323-327 . 百度学术
    12. 周战云,李社坤,郭子文,刘华俊,包振江,郭继刚. 页岩气水平井固井工具配套技术. 石油机械. 2016(06): 7-13 . 百度学术
    13. 陈保山,程智远,徐敏,陈凌云,陈林川,郑忠茂. 新型?139.7mm漂浮接箍的研制与应用. 石油机械. 2016(11): 29-32 . 百度学术

    其他类型引用(2)

计量
  • 文章访问数:  2939
  • HTML全文浏览量:  64
  • PDF下载量:  3777
  • 被引次数: 15
出版历程
  • 收稿日期:  2014-03-09
  • 修回日期:  2014-10-26
  • 刊出日期:  1899-12-31

目录

    /

    返回文章
    返回