Luhai fishing tools,Releasing and Circulating Overshot,Releasing and Reversing Overshot

CHAOYANG, China - Aug. 14, 2016 - PRLog -- Releasing and circulating overshot is special external fishing tool used for fishing drill collar,dill pipe,tubing and other fished in drilling and work over operation.according to different uses,it may be equipped with some accessories,such as extension sub,wall hook,oversize guide,etc.

Releasing and reversing overshot ,a new type of fishing tool, has many advantages owned by various overshot, box tap and the like. Its distinguishing features are as follows: to unscrew and recover the stuck fish: to release the fish down hole if necessary; to circulate the washing fluid.

In Drilling and work over operation, releasing spear is a tool mainly used for fishing of drill pipe, oil pipe and casing from fish hole. It can be used with internal cutter, bumper jar etc.

Reversing sub is also called reversing spear which is a special tool for reversing stuck drill stem above stuck point in drilling and work over operation. When make fishing or reversing, if fallen object is stuck or fail to be released, the tool can released from thread connection of reversing sub to take out fishing tool.

Taper tap is a special tool cutting thread and fishing internally in dropped objects such as tubing, drill-pipe, wash-over pipe, packer, water flow allocator, down-hole production allocator . The tool is especially a great success in catch of objects accompanied with couplings. The taper tap can effect different fishing operating when equipped with RH thread or LH thread drill pipes and other tools.

Die collar is a special external fishing tool which is engaged on the outside wall of tubing objects such as oil tubing and drill pipe.It can be used in fishing cylindrical objects without inner bore or stucked inner bore.

The internal hook is used inside casing or tubing to catch all kinds of ropes and other fishes such as wire-lines, cables, logging steel pieces, paraffin cutters, etc. Internal hooks are available in two types: Live(adjustable)internal hook and Dead(fixed)internal hook.

The external hook is used inside casings or tubings to catch all kinds of ropes, lifting bails, hollow short cylinders, short rope slings such as wirelines, logging steel pieces, cables, etc.

Reverse circulation junk basket is used to catch all kinds of small junk objects such as cones, cutters, hand tools from bottom well. During drilling operation, it produces a local reverse circulation of fluid at well core so as to effect a complete recovery of junk in the junk basket.

Fishing magnet in petroleum and geology exploration is used for fishing of small fallen objects in the downhole. With some of advantages such as simple structure, easy to operate, reliable performance, small size and weight, it is equipped with permanent magnet to attract small objects such as teeth wheel, palm, tong teeth and tool so that small objects in downhole are fished and the well bottom is cleaned up.

During drilling process, junk sub is applied mainly for fishing of shivers and fallen objects such as carbide tooth, drill bit and bearing which can not be carried out of hole by conventional fluid circulation, etc. It possesses important functions to keep hole cleaning, increase bit services life, reduce and prevent drill bit from unexpected damage. The tools are available with all sizes and super performance.

Milling shoes are bead welded YD alloy or other abrasive material on the bottom to mill downhole fallen objects.(common type and high-efficient type)

The impression block is an assembly of a steel body and a soft lead founded at the bottom. It is used to know the accurate depth, shape of fishing and check the deformation shape of casing diameter.