HLM型滑块卡瓦打捞矛    

Sliding Block Spears  Type HML

滑块卡瓦打捞矛是内捞工具。它可以打捞钻杆、油管、套铣管、衬管、封隔器、配水器等具有内孔的落物，又可以对遇卡的落物进行倒扣作业或配合其他工具使用。它分为单滑块打捞矛和双滑块打捞矛。

The sliding block spear is an internal fishing tool which can be used both to fish drill pipes, tubings,  washover pipes, liners, packers, water allocators and reverse stuck fishes or used with others tools. The block spears are furnished in two types. Releasing single block spear and releasing two blocks spear.