这种卡瓦打捞筒是他设计的。
用可退式捞矛或打捞筒打捞油管。
请把卡瓦打捞筒接上，下钻！
该打捞筒设计新颖、结构简单、加工容易、操作方便。
The design of the new type overshot is novel, the configuration is briefness, the machining is easy, handling ease.
他们的做法是使用一个卡瓦打捞筒和震击器去打捞落鱼。
Their practice is to use one over-shot and one jar for fishing.
如果落鱼不能移动，则打捞筒内的释放系统能使打捞筒脱开并起出。
If the fish cannot be removed, a release system within the overshot allows the overshot to be disengaged and retrieved.
卡瓦打捞筒作为钻修井打捞工具，主要用于钻完井作业打捞落物的外捞工具。
Slip socket, the fisher of drilling and repairing well, is mostly used as the outer fisher to fish the drop during the drilling and completion.
外割刀一般用来去除落鱼的最上面的可能被损坏的部分，以便使打捞筒或类似的打捞工具与未损坏的表面接合。
External cutters are generally used to remove the topmost, possibly damaged, portion of a fish to enable an overshot, or similar fishing tools, to engage on an undamaged surface.
通常在打捞作业中所使用的一种井下工具。它用来制作落鱼的顶部和外表面，以便使打捞筒或类似的打捞工具能够干净地与落鱼接合。
A downhole tool routinely used in fishing operations to prepare the top and outside surface of a fish, generally to allow an overshot or similar fishing tool to engage cleanly on the fish.
当岩心筒在井下被卡住时，很容易地从安全接头螺纹处倒开，起出内筒和岩心，只留下外筒进行打捞。
When coring barrel gets stuck downhole, it is very easy to back off safety joint to trip out inner barrel and cores, and only left outer barrel for fishing operation.
针对复杂打捞中偏磨油管打捞时易变形、胀破或撕裂的难题，研制出特殊滑牙块打捞矛，打捞矛由上接头、矛杆、滑牙块、锁块、销钉、外筒等组成。
In complicated fishing operation, the tubing is very likely to deform, burst and tear owing to eccentric wear, thereby a kind of fishing spear with sliding cone blocks is developed.
针对复杂打捞中偏磨油管打捞时易变形、胀破或撕裂的难题，研制出特殊滑牙块打捞矛，打捞矛由上接头、矛杆、滑牙块、锁块、销钉、外筒等组成。
In complicated fishing operation, the tubing is very likely to deform, burst and tear owing to eccentric wear, thereby a kind of fishing spear with sliding cone blocks is developed.
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