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油田修井作业具有工程难度大、技术要求高的特点,必须用大型的修井设备,并配备大修钻杆、大修转盘等专用设备工具才能开展工作。其主要内容有复杂打捞,也就是在油气井中,由于各类因素而引起井下落物情况的繁琐性;修复油井套管,套管对油气井正常生产起到了重要保障作用,而油井由于诸多因素常引起套管损坏现象,所以,修复油井套管在大修作业队占有核心位置;套管内侧钻,指的是通过小钻杆带钻头,从老井套管内下入,在预定位置钻开一个窗口,小钻头从“窗口”往外钻进,打一个小井眼,然后下小套管、固井。
Workover oilfield has the engineering difficulty, high technical requirements, must use a large workover equipment, and with overhaul drill pipe, overhaul turntable and other special equipment and tools to carry out work. The main content of complex recovery, that is, in the oil and gas wells, due to various factors caused by the well-litter situation tedious; repair oil well casing, casing on the normal production of oil and gas plays an important guarantee role, and the well due to many factors Often caused by the casing damage, so repair oil well casing occupy the core position in the overhaul team; casing inside the drill, refers to the small drill bit with a drill from the old casing into the underground, drill a predetermined location Window, small drill from “window ” drilling out, hit a slim hole, and then under the small casing, cementing.