起下钻过程中井喷压井液密度设计新方法

任美鹏, 李相方, 马庆涛, 史富全, 牛蕴

任美鹏, 李相方, 马庆涛, 史富全, 牛蕴. 起下钻过程中井喷压井液密度设计新方法[J]. 石油钻探技术, 2013, 41(1): 25-30. DOI: 10.3969/j.issn.1001-0890.2013.01.005
引用本文: 任美鹏, 李相方, 马庆涛, 史富全, 牛蕴. 起下钻过程中井喷压井液密度设计新方法[J]. 石油钻探技术, 2013, 41(1): 25-30. DOI: 10.3969/j.issn.1001-0890.2013.01.005
Ren Meipeng, Li Xiangfang, Ma Qingtao, Shi Fuquan, Niu Yun. A New Design Method of Killing Fluid Density against Blowout during Tripping[J]. Petroleum Drilling Techniques, 2013, 41(1): 25-30. DOI: 10.3969/j.issn.1001-0890.2013.01.005
Citation: Ren Meipeng, Li Xiangfang, Ma Qingtao, Shi Fuquan, Niu Yun. A New Design Method of Killing Fluid Density against Blowout during Tripping[J]. Petroleum Drilling Techniques, 2013, 41(1): 25-30. DOI: 10.3969/j.issn.1001-0890.2013.01.005

起下钻过程中井喷压井液密度设计新方法

详细信息
    作者简介:

    任美鹏(1984-),男,山东东营人,2008年毕业于中国石油大学(华东)石油工程专业,中国石油大学(北京)在读博士研究生,主要从事油气井井控工艺和油气井安全方面的研究。联系方式(010)89732193,meipeng376@126.com。

  • 中图分类号: TE28+3

A New Design Method of Killing Fluid Density against Blowout during Tripping

  • 摘要: 钻井起下钻过程中,操作不当容易导致溢流或井喷,而此时钻头不在井底,U形管原理不能描述此时的井眼状况。针对该种情况,基于气液两相流理论,通过分析钻头不在井底时溢流、关井和压井期间的井筒流体特性,建立了钻头不在井底的Y形管模型。利用Y形管的3个分支结构代表钻头不在井底工况下钻柱、环空和钻头以下井眼3部分,钻柱和环空部分的井筒压力特性可以用典型U形管原理分析,当分析关井和压井期间井底压力等压井参数时,应考虑钻头以下井段的流体特性,即Y形管结构下部分支的流体特性,据此,应用Y形管描述钻头不在井底工况下整个井筒的压力特性。基于该理论,给出了根据关井压力恢复曲线读取关井压力的时机,推导出了钻头以下井段的流体密度计算公式,并给出了压井液密度设计方法。实例计算表明,设计压井参数时,钻头以下井段的含气性对地层压力获取和压井液密度求取具有较大影响,因此,在设计压井参数时应首先分析其含气性。
    Abstract: During tripping,improper operation might lead to kick or even blowout when wellhole conditions could not be described by U-tube theory if the bit was off-bottom.Based on the theory of two phase flow,a Y-tube model is built through analysis of wellbore fluid properties in overflow,shut-in and well killing when the bit is off-bottom.Three branches of Y-tube represent the drill string,annulus and wellbore below the bit,respectively.For the drill string and annulus,the wellbore pressure may be analyzed by the typical Y-tube theory.Fluid properties in interval below the bit(namely lower branch of Y-tube)should be considered,when the changes of killing parameters(e.g.bottomhole pressure)during shut-in and killing are investigated,Then,the characteristics of entire wellbore pressure with bit off bottom are described with Y-tube theory.Based on this theory,the moment at which the shut-in pressure is determined from shut-in pressure buildup curve is proposed,the density calculation formula of fluid in interval below the bit is derived,and the design method of killing fluid density is given.Actual calculation indicates that gas potential in the interval below bit is significant for acquiring the formation pressure and killing fluid density.So,the gas potential should be analyzed first in design of killing parameters.
  • [1]

    Gillespie J D,Morgan R F,Perkins T K.Study of the potential for an off-bottom dynamic kill of a gas well having an underground blowout[R].SPE 17254,1990.

    [2]

    Flores-Avila F S,Smith J R,Bourgoyne A T,Jr,et al.Experimental evaluation of control fluid fallback during off-bottom well control:effect of deviation angle[R].SPE 74568,2002.

    [3]

    Flores-Avila F S,Smith J R,Bourgoyne A T,Jr.New dynamic kill procedure for off-bottom blowout wells considering counter-current flow of kill fluid[R].SPE 85292,2003.

    [4]

    Victor Gerardo Vallejo-Arrieta.Analytical model to control off-bottom blowouts utilizing the concept of simultaneous dynamic seal and bullheading[D].Baton Rouge:Louisiana State University,Agricultural and Mechanical College,2002.

    [5] 张兴全,李相方,任美鹏,等.硬顶法井控技术研究[J].石油钻探技术,2012,40(3):62-66. Zhang Xingquan,Li Xiangfang,Ren Meipeng,et al.Research on the well control techniques of bullheading[J].Petroleum Drilling Techniques,2012,40(3):62-66.
    [6] 张桂林,董明键.HF203井井喷及强行下钻压井方法[J].石油钻探技术,2011,39(3):72-76. Zhang Guilin,Dong Mingjian.Well HF203 blowout and unconventional killing method[J].Petroleum Drilling Techniques,2011,39(3):72-76.
    [7] 郝俊芳.平衡钻井与井控[M].北京:石油工业出版社,1992:33. Hao Junfang.Balance drilling and well control[M].Beijing:Petroleum Industry Press,1992:33.
    [8]

    Neal Adams,Larry kuhlman.Kick and blowout control[M].Tulsa:Pennwell Corporation,1994:179-190.

    [9]

    Fitzpatrick J.Practical well control[M].Austin:Petroleum Extension Service,1992:6-10.

    [10] 陈庭根,管志川.钻井工程理论与技术[M].东营:中国石油大学出版社,2006:230-248. Chen Tinggen,Guan Zhichuan.Theory and technology of drilling engineering[M].Dongying:China University of Petroleum Press,2006:230-248.
    [11]

    Robert D G.Blowout and well control handbook[M].Oxford:Gulf Professional Publishing,2003:90-102.

    [12] 张发展.石油钻井作业现场压井液密度确定方法[J].中国新技术新产品,2011(8):129-131. Zhang Fazhan,Research on the well killing mud density during drlling[J].China New Technologies and Products,2011(8):129-131.
    [13] 李相方,管丛笑,隋秀香,等.气侵检测技术的研究[J].天然气工业,1995,15(4):19-22. Li Xiangfang,Guan Congxiao,Sui Xiuxiang,et al.Research on gas cut detecting technology[J].Natural Gas Industry,1995,15(4):19-22.
    [14] 李相方,庄湘琦.关井压力恢复和读取时机分析[J].石油学报,2002,23(5):110-112. Li Xiangfang,Zhuang Xiangqi.Analysis on the pressure build up and its recording time after shut-in[J].Acta Petrolei Sinica,2002,23(5):110-112.
    [15]

    An H,Scott S L,Langlinais J P.Estimation of bottomhole pressure in pumping oil wells:effect of high-viscosity fluids and casinghead pressure.SPE 63047,2000.

计量
  • 文章访问数:  3258
  • HTML全文浏览量:  61
  • PDF下载量:  3977
  • 被引次数: 0
出版历程
  • 收稿日期:  2012-08-27
  • 修回日期:  2012-11-19
  • 刊出日期:  1899-12-31

目录

    /

    返回文章
    返回