封隔器式膨胀管护壁技术研发与应用  

Development and application of the packer‑activated expandable tubular technology for well wall protection

作　　者：冯建月 叶成明[1] 王营超[1] 李小杰[1] 解伟[1] FENG Jianyue;YE Chengming;WANG Yingchao;LI Xiaojie;XIE Wei(Center for Hydrogeology and Environmental Geology,CGS,Baoding Hebei 071051,China)

机构地区：[1]中国地质调查局水文地质环境地质调查中心,河北保定071051

出　　处：《钻探工程》2022年第3期123-129,共7页Drilling Engineering

基　　金：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)。

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。In water well drilling,the problems of hole collapse,falling stones,wellbore shrinkage and leakage are prone to happen due to poor stability of bedrock complexity,which seriously affect the quality and efficiency of well drilling.The expandable tubular is an effective measure to solve the wall protection problems in complex formation,but the conventional one is not suitable for water well drilling for its high cost and complex process.In view of this,research was carried out on packer⁃activated expandable tubulars.The packer is used as the expansion mechanism to make the thin⁃walled metal pipe expand in the target layer and stick to the well wall,so as to achieve the purposes of wall protection,plugging and casing repair.This paper introduces the development and operation of the expandable tubular system,and the field test of the technology for wall protection and casing repair,which is the first application of the technology in the field of water well drilling and completion.

关 键 词：膨胀管 封隔器 护壁 套管补贴 

分 类 号：P634[天文地球—地质矿产勘探]