The utility model discloses a disposable fishing cylinder. Including the cylinder, inner hole of cylinder bore is small under the large; the cylinder body is provided with 3 tee evenly distributed along the circumference of the ball seat is provided with an inclined hole, inclined hole is arranged in the steel ball and the spring, the inclined hole diameter smaller than the diameters of the steel balls, is provided with a screw slant hole plugging; the cylinder body. The seat is provided with a rotating ball seat corresponding to the rotating seat is provided with a reset spring, a reset spring is arranged at the bottom of the spring seat and the cylinder body is screwed with the inner wall of the cylinder body; the rotary seat is provided with a gap at the card key. The utility model can realize the purpose of fishing and releasing simply by lowering and lifting. The tensile strength of the structure is the maximum tensile strength of the cylinder body, which is far greater than the tensile strength of the original shear pin, thereby reducing the probability of the occurrence of a new accident during the salvage process, and the performance is reliable. So that the whole fishing process is more simple, smooth, reliable, time-saving, save money.
【技术实现步骤摘要】
一种可退式打捞筒
本技术涉及一种可退式打捞筒,属于钻井打捞工具
技术介绍
随着石油及天然气开采技术的不断发展,钻井深度不断加深,这就造成井下事故更加频繁和复杂化。在固井过程中出现套管断裂事故是比较普遍的,由于井下事故对钻井、固井、修井的工作影响很大,危害也很深,若处理不当,不仅耗时长,损失大,甚至导致油气井报废,所以套管打捞工具是每口井必备的工具。三球打捞筒是目前较常用的打捞工具,三球打捞筒包括筒体,筒体的内孔为上小下大的锥孔;筒体内设有沿圆周均布的3个球座,球座经剪销与筒体铆接,球座上设有斜孔,斜孔内设有钢球和弹簧,斜孔的下孔径小于钢球的直径,斜孔上口设有螺堵。打捞作业时,通过钻柱将三球打捞筒放至井下,钢球卡住接箍下沿将带接箍的套管(俗称落鱼)捞出,当带接箍的套管卡死无法捞起需释放落鱼时,必需加大提拉吨位达到造成剪销被剪断,使得球座沿筒体下行并径向张大,才可以释放掉带接箍的套管。现有的三球打捞筒存在以下缺陷:1、打捞筒使用过后,剪销已经变形或者被剪断,必须更换新的剪销才可以再次使用:由于剪销直径是按规定剪切力设计好的且与外筒和球座过盈配合连接在 ...
【技术保护点】
一种可退式打捞筒,包括筒体(5),筒体(5)的内孔为上小下大的锥孔;筒体(5)内设有沿圆周均布的3个球座(9),球座(9)上设有斜孔(13),斜孔(13)内设有钢球(10)和弹簧(11),斜孔(13)的下孔径小于钢球(10)的直径,斜孔(13)上口设有螺堵(12);其特征在于:所述球座(9)下方的筒体(5)内设有与球座(9)对应的旋转座(8),旋转座(8)下方设有复位弹簧(7),复位弹簧(7)底部设有与筒体(5)螺接的弹簧座(6);3个旋转座(8)间隙处的筒体(5)内壁设有卡键(4)。
【技术特征摘要】
1.一种可退式打捞筒,包括筒体(5),筒体(5)的内孔为上小下大的锥孔;筒体(5)内设有沿圆周均布的3个球座(9 ),球座(9 )上设有斜孔(13 ),斜孔(13 )内设有钢球(10 )和弹簧(11),斜孔(13)的下孔径小于钢球(10)的直径,斜孔(13)上口设有螺堵(12);其特征在于:所述球座(9)下方的筒体(5)内设有与球座(9)对应的旋转座(8),旋转座(8)下方设有复位弹簧(7),复位弹簧(7)底部设有与筒体(5)螺接的弹簧座(6) ;3个旋转...
【专利技术属性】
技术研发人员:洪德强,郑波强,黄佐泽,谢威,彭官洪,胡卫宇,郑廷碧,万文才,
申请(专利权)人:贵州高峰石油机械股份有限公司,
类型:实用新型
国别省市:
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