CAJ | 학술논문

龙114井因定向钻井后井眼的轨迹发生变化，起下钻摩阻增加，接单根上提钻具困难，在进行倒划眼时钻具胀扣掉落井底，鱼长3205.21 m，浅鱼头母扣胀大变形。通过分析事故处理过程中存在的难点，优选出打捞工具并对其进行了针对性改进，按照制定的事故处理方案，将活动解卡力控制在打捞工具造扣部位强度范围内，最终成功将井下落鱼安全起出。该井所采取的处理思路和技术措施对今后同类事故的处理具有一定的借鉴意义。
룡114정인정향찬정후정안적궤적발생변화，기하찬마조증가，접단근상제찬구곤난，재진행도화안시찬구창구도락정저，어장3205.21 m，천어두모구창대변형。통과분석사고처리과정중존재적난점，우선출타로공구병대기진행료침대성개진，안조제정적사고처리방안，장활동해잡력공제재타로공구조구부위강도범위내，최종성공장정하락어안전기출。해정소채취적처리사로화기술조시대금후동류사고적처리구유일정적차감의의。
Due to the wellbore trajectory changes caused by directional drilling for Well Long 114, the tripping frictional resistance was increased, and it was dififcult to draw the BHA out, resulting in the BHA expansion and dropping into the well bottom during back reaming the wellbore. The ifsh length was 3 205.21 m, and the internal thread swelled and was deformed. Through analyzing the dif-ifculties during accident treatment, the ifshing tool was selected and improved . According to the handling program for the accident, the active stuck freeing strength was controlled within the force of thread making position of the ifshing tool, and the ifsh was successfully tripped out ifnally. The idea and technical treatment can be helpful to the similar type of accident treating.