封隔器式膨胀管护壁技术研发及应用
投稿时间:2021-06-09  修订日期:2021-08-02  点此下载全文
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冯建月 中国地质调查局水文地质环境地质调查中心 071051
基金项目:国家重点研发计划项目“地下饮用水源快速探测与开采技术”(编号:2018YFC1508703)
中文摘要:基岩复杂地层因其地层稳定性差,易出现塌孔、掉块、缩径和漏失等问题,严重影响着水井钻探工程质量和钻探效率。膨胀管技术是解决复杂地层护壁技术难题的有效措施,但常规的膨胀管技术成本高、工艺复杂,不适用于水井钻探成井工作,基于此开展了封隔器式膨胀管技术研究工作。该技术使用封隔器作为膨胀机构,使薄壁金属管在目标层段胀开并紧贴井壁,达到护壁、堵漏和套管补贴的目的。本文介绍了膨胀管系统研发与施工工艺,并实施了膨胀管护壁与套管补贴修复现场试验,实现了膨胀管技术在水井钻探成井领域中的首次应用。
中文关键词:膨胀管  封隔器  护壁  套管补贴  
 
Development and Application of Expandable Tubular with Packer Wall Protection Technology
Abstract:Due to instabilities of the complexity formation, the water well drilling is easy to have the problems of hole collapse, block falling, shrinkage and leakage,which seriously affect the quality and efficiency of well drilling. Expandable tubular technology is an effective measure to solve the technical problems of wall protection in complex formation, but the conventional technology is not suitable for water well drilling for its high cost and complex process. Based on this, the research work of expandable tubular with packer technology was carried out. The packer is used as the expansion mechanism to make the thin-walled metal pipe expand in the target layer and close to the well wall, so as to achieve the purposes of wall protection, plugging and casing patch. This paper introduces system development and construction technology of expandable tubular, and carries out the field test of wall protection and casing repair,realizing the first application of the technology in the field of water well drilling and completion.
keywords:expandable tubular  packer  wall protection  casing patch
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