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ZX105井卡套管事故原因分析及处理工艺

张珍

张珍. ZX105井卡套管事故原因分析及处理工艺[J]. 钻井液与完井液, 2018, 35(3): 84-88. doi: 10.3969/j.issn.1001-5620.2018.03.014
引用本文: 张珍. ZX105井卡套管事故原因分析及处理工艺[J]. 钻井液与完井液, 2018, 35(3): 84-88. doi: 10.3969/j.issn.1001-5620.2018.03.014
ZHANG Zhen. Analyses of the Cause of Casing Sticking in Well ZX105 and the Techniques of Freeing the Sticking[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(3): 84-88. doi: 10.3969/j.issn.1001-5620.2018.03.014
Citation: ZHANG Zhen. Analyses of the Cause of Casing Sticking in Well ZX105 and the Techniques of Freeing the Sticking[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(3): 84-88. doi: 10.3969/j.issn.1001-5620.2018.03.014

ZX105井卡套管事故原因分析及处理工艺

doi: 10.3969/j.issn.1001-5620.2018.03.014
基金项目: 

“十三五”国家科技重大专项“优快钻井工具及关键技术应用研究”(2016ZX05038006-004)。

详细信息
    作者简介:

    张珍,工程师,1980年生,现在主要从事钻井液技术的研究工作。电话13550633102;E-mail:zhenzhen0607@163.com。

  • 中图分类号: TE258

Analyses of the Cause of Casing Sticking in Well ZX105 and the Techniques of Freeing the Sticking

  • 摘要: ZX105井是部署在四川盆地川西凹陷知新场构造的首口勘探水平井,目的层为下沙溪庙组,设计完钻井深为3 726 m(垂深为2 506 m),水平段长为1 001 m。该井二开下套管至井深2 847 m,坐吊卡接悬挂器后活动套管时遇卡。针对ZX105井下套管遇卡技术难题,通过卡套管原因分析,判断本次卡套管类型为压差黏附卡套管,并得出井身结构缺陷是卡套管的主要原因。分析表明,一开套管下深浅,二开下套管遇卡时套管已进入水平段214 m,上部套管没有足够的冲击重量使水平段套管移动,同时井底较高的正压差,是造成本次水平井卡套管的主要原因,由此形成了套管解卡处理思路。该井采用了降低钻井液密度、三次泡解卡剂、环空憋压等手段后,首次实现川西水平井套管解卡成功,为川西中江地区下沙溪庙目的层的开发提供了宝贵施工经验。

     

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出版历程
  • 收稿日期:  2018-01-13
  • 刊出日期:  2018-05-30

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