HALF-OPEN FISHING MAGNET
Semi-open fishing magnet is a tool for fishing small junks in oil and geological drilling, It has the advantages of simple structure, convenient operation, reliable performance, small size and light weight, The permanent magnet is used to absorb and fish the small falling objects such as drill clip, palm, cone, bearing, slip body, slip tooth, tong tooth and other tools falling into the well, so as to effectively fish the small falling objects and purify the bottom of the well. As shown in the figure, the Semi-open fishing magnet is mainly composed of top sub, magnetic sleeve, high temperature magnetic steel and retaining ring.The connector thread is connected to the drill string, and the retaining ring holds the underside of the magnet, which is used to absorb magnetized junks.
RELEASING AND CIRCULATING OVERSHOT
Releasing and circulating overshot is one of the fishing tools which can externally engage the pipe, It can fish drill collar, drill pipe, tubing and other pipes. The tools have installed seal, it can circulate drilling fluids in the higher pump pressure after catching the fish.
SHORT CATCH RELEASING OVERSHOT
Short catch releasing overshot is mainly used for catching tubing、drill pipe、sucker rod body and crossover which sticking point is close to fish top end, or fish top end has a small length above coupling, generally the fish top end can be caught when it expose more than 50mm.
SUCKER ROD OVERSHOT
The releasing sucker rod overshot can be lifted out when it catches the sucker rod, and once it needs to drop out from the tool, the fish can be released easily and without damage. It has two types grapple, basket grapple and spiral grapple, type A and type B. Sucker rod overshot has the characteristics of small, low cost, reasonable structure design, convenient use and wide application.
SHORT CATCH SUCKER ROD OVERSHOT
Short Catch Sucker Rod Overshot is mainly used for catching coupling where close to the fish top end, or the sucker rod body with a short length above the coupling. Short catch sucker rod overshot has the characteristics of small in size, low cost, reasonable structure design, convenient use and wide application, meanwhile when it works in excessive torque condition, it can prevent overshot self-locking, so it effectively improve the success rate of fishing, which also improves the efficiency of fishing operations.
LM-T type releasing spear is one of the fishing tools which can catch the fish internally. Mainly used for catching drilling pipe, casing, tubing and other cylindrical hollow type fish in oil and gas field well repairing. It can use with other tools such as internal casing cutter, jars. If the fish was struck and cannot be lift, release the spear and trip out the drill string.
RELEASING BACK OFF SPEAR
Releasing back off spear is used for fishing, back off and releasing the fish. It can catch fish and at the same time transmit left hand torque in back off operation. It can instead of left-hand taper taps and die collars. The function is similar to back off sub. The difference is that it does not need to make up thread with the fish, it can catchat any parts of the fish’s ID.
SLIDING BLOCK SPEAR
Sliding block spear is an inside fishing tool for fishing the junk internally such as fishing drill pipe, tubing, washover pipe, liner, packer, water distributor, etc which has internal bore, and it also can do back off for the stuck junk or use with other tools(such as jar and back off tool etc). This tool has simple structure, convenient operation, and convenient maintenance.