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JUNK SUBS

JUNK SUBS

JUNK SUBS

Product Code : JUNK SUBS

Description

During drilling process，drilling fishing cup is applled 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 toe cleaning，increase bit service life，reduce and prevent drill bit from unexpected damage.

Structure

Due to the fact that the O.D. of external bowl of fishing cup is bigger and a smaller circular space is available between extemal bowl of fishig cup and well hole；the mandrel diameter at cup mouth is larger so that it has a bigger annular space，therefore，the fluid at the cup mouth form a swirls and suddenly fall down so as to reduce the carrying capacity. By this way，some heavy objects will drop in cup and be fished out so that the purpose of cleaning ofhole toe is carried out.

Specifications - Junk Sub

Model	Hole Size (mm)	ThreadConn.	I.D. (mm)	O.D. (mm)
LB94	108~117.5	2 3/8 REG	19	94
LB102	117.5~124	2 7/8 REG	32	102
LB114	130~149	3 1/2 REG	38	114
LB127	152.4~162	3 1/2 REG	38	127
LB140	165~190.5	3 1/2 REG	38	140
LB168	190.5~216	4 1/2 REG	57	168
LB178	219~244.5	4 1/2 REG	57	178
LB190	229~273	4 1/2 REG	57	190
LB197	235~279.5	4 1/2 IF	70	197
LB219	244~295	6 5/8 REG	76	219
LB229	254~305	6 5/8 REG	76	229
LB245	292~330	6 5/8 REG	76	245
LB280	330~375	7 5/8 REG	76	280
LB311	327~375	7 5/8 REG	76	311
LB327	375~444.5	7 5/8 REG	76	327
LB340	386~456	7 5/8 REG	76	340

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