CAJ | 학술논문

在小套管开窗侧钻下卡瓦锚定式斜向器过程中，有时会发生斜向器中途坐封卡钻事故，导致无法在预定位置开窗侧钻。由于斜向器本身结构、形状及材质比较特殊，一旦中途坐封遇卡，处理难度大，成功率低。为此，从现场操作、工具质量和井筒质量3个方面对事故原因进行了分析，指出了处理该类事故的技术难点，总结了针对不同坐封情况分别采取活解、换套、提高开窗位置以及先磨后套分步处理等技术措施，在实例应用中取得了良好效果，为处理类似事故提供了借鉴。
재소투관개창측찬하잡와묘정식사향기과정중，유시회발생사향기중도좌봉잡찬사고，도치무법재예정위치개창측찬。유우사향기본신결구、형상급재질비교특수，일단중도좌봉우잡，처리난도대，성공솔저。위차，종현장조작、공구질량화정통질량3개방면대사고원인진행료분석，지출료처리해류사고적기술난점，총결료침대불동좌봉정황분별채취활해、환투、제고개창위치이급선마후투분보처리등기술조시，재실례응용중취득료량호효과，위처리유사사고제공료차감。
During tripping slip type whipstock in sidetracking process, whipstock set sticking occurs sometimes, leading to being unable to sidetrack designed positions. Because the whipstock is special in structure, shape, and material, once being stuck, it is very dif-ifcult to handle, with low success ratio. The accident reasons are analyzed from the aspects of ifeld operation, tool quality, and wellbore quality, and the technical dififculty for treating the accident is pointed out. It is summarized that according to different setting situation, some treatment could be selected from, such as casing changing, window cutting position elevating, etc., which are applied in real cases with good effect, supplying reference to similar accident treatment.