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某高产油井,采用玻璃钢抽油杆新工艺生产采油,在作业队检泵时导致井内管柱落井,经多次打捞、井内仍剩Ф22mm玻璃钢抽油杆33根,鱼顶被破坏。根据玻璃钢抽油杆本体脆性强、易被挤压碎、接箍较长钢性强的特性,常规打捞方法不适在此情况下使用,通过对前期事故处理情况的认真分析,使用母锥套铣筒进行套铣打捞,把玻璃钢抽油杆接箍套掉。套铣筒内带钢丝进行套铣打捞,在钻压和扭矩的作用下,捞出被套碎的玻璃钢抽油杆杆体。
A high-yielding oil well, the use of glass fiber reinforced plastic sucker rod production of new oil production process, the team led the pump test tube wells downhole, after several salvage, there are still Ф22mm fiberglass rod 33, fish top was destroyed. According to the FRP sucker rod body brittle, easily crushed, the coupling of long steel and strong characteristics of conventional methods of salvage discomfort in this case, through careful analysis of the situation prior to the accident, the use of female cone milling Cartridge milling fishing, the FRP sucker rod sleeve off. Set of milling tube with wire to carry out sets of milling salvage, the role of weight-bearing and torque, remove quilt broken FRP sucker rod body.