CAJ | 학술논문

卡钻的处理方法主要有：通过施加外力如上提、下放钻具转动转盘使钻具恢复自由状态；通过调整钻井液性能、打稠塞、注酸、注解卡剂、反循环等方法使被卡钻具与井壁之间的填充物转移或者破坏；通过反丝钻具打捞甚至套铣起出被卡钻具。大牛地气田DPT－305水平井通井过程中发生一起严重的卡钻事故。通过重浆＋清扫液、注酸、注解卡剂、环空憋压等方法处理被卡钻具与井壁之间的填充物；通过固定转盘上下活动来对被卡钻具施加扭矩；倒扣等方式处理这起卡钻事故，最终解卡。总结了事故的成因，分析了处理过程的得失，为以后处理此类事故积累了经验。
잡찬적처리방법주요유：통과시가외력여상제、하방찬구전동전반사찬구회복자유상태；통과조정찬정액성능、타주새、주산、주해잡제、반순배등방법사피잡찬구여정벽지간적전충물전이혹자파배；통과반사찬구타로심지투선기출피잡찬구。대우지기전DPT－305수평정통정과정중발생일기엄중적잡찬사고。통과중장＋청소액、주산、주해잡제、배공별압등방법처리피잡찬구여정벽지간적전충물；통과고정전반상하활동래대피잡찬구시가뉴구；도구등방식처리저기잡찬사고，최종해잡。총결료사고적성인，분석료처리과정적득실，위이후처리차류사고적루료경험。
The related treatment methods of sticking are mainly by up-lifting and down-lowering drilling tool or rotating turntable with external force to make drilling tool to restore free state;by adjusting drilling fluid performance, putting con-densed slurry plug, acid injection, grouting pipe freeing agent and reverse circulation to move or damage the infillings be-tween the pipes and borehole wall;by the use of reverse thread drilling tools to fish and even by casing milling to pull out the stuck drill.A serious sticking accident occurred in the drifting process in DPT-305 well of Daniudi gas field, and the final stuck freeing was completed by heavy slurry+cleaning fluid, acid injection, pipe freeing agent grouting and pressure holding in annular space;by fixing turntable and moving it up and down to apply torque to the stuck drill and by the use of reverse thread fisher.The causes of the accident are summarized and the analysis on the treatment process is made, which could be the reference experience for similar accidents in future.