该工艺管柱主要由双缸液压锚定封隔器、双缸液压无锚定封隔器、液压丢手工具、换层开关、扶正器等工具组成。
The pipe string includes double hydraulic cylinder with anchorage packer, double hydraulic cylinder without anchorage packer, releasing tool, reversing valve and centralizer.
针对这种情况，研制出KDS— 115型液压丢手工具。 该型工具通过设置上接头与打捞头之间的凸爪凹槽结构，解决了以往丢手工具不能传递扭矩的问题；
Model KDS-115 hydraulic releasing tool is developed, which solves the problem of torque transfer by designing a claw-groove structure between the upper sub and fishing head.
油田常用的丢手工具主要有投球式和液压式两种类型，这两种丢手工具都不能传递扭矩，限制了工具的应用范围，而且投球式丢手工具施工时作业时间长，效率低。
The ball-off and hydraulic releasing tools are used in oilfield, but it can not transfer the moment of torsion and limit their applied range.
油田常用的丢手工具主要有投球式和液压式两种类型，这两种丢手工具都不能传递扭矩，限制了工具的应用范围，而且投球式丢手工具施工时作业时间长，效率低。
The ball-off and hydraulic releasing tools are used in oilfield, but it can not transfer the moment of torsion and limit their applied range.
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