Casing grabs

INTERNAL CASING GRABS TVM
INTERNAL CASING GRABS OF SEGMENT TYPE (TV, TVU, TVP)
RELEASED EXTERNAL CLUTCH CASING GRABS TMO
EXTERNAL CASING GRABS TN, TNZ, TNS
INTERNAL SPIRAL CASING GRABS TVS

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INTERNAL CASING GRABS TVM

The self-releasing internal casing grabs TVM are intended for removing pipes from the bore in full or in parts, and for removing the emergency string of pump and compressor, drill or casing pipes while performing fishing operations. It catches the internal surface of pipe.

The construction of casing grabs provides a possibility to free emergency object when it is impossible to remove it from the bore.
The casing grabs have a flushing port intended for recovery of circulation through the emergency string. There are left and right casing grabs.

Specification

Code of casing grab standard size	TVM-48	TVM-60	TVM-73	TVM-89	TVM-102	TVM-114	TVM-127	TVM-146	TVM-168	TVM-194	TVM-245
Range of caught internal diameters of pipes, mm	39-43	48-53	57-66	71-79	84-96	95-108	108-121	118-130	136-169	160-190	214-220
Connection thread	З-66	З-73	З-76	З-76	З-86, З-88	З-86, З-88	З-76	З-86, З-88	З-86, З-88	З-86, З-88	З-152

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INTERNAL CASING GRABS OF SEGMENT TYPE (TV, TVU, TVP)

The internal casing grabs of segment type are intended for removing pipes from the bore in full or in parts, for removing the emergency string of pump and compressor, drill or casing pipes while performing fishing operations. It catches the internal surface of pipe. There are right and left internal casing grabs with a lengthened construction – U (number of rams is increased in order to improve coupling of the casing grab with the pump), with a flushing hole – P (for circulation recovery through the emergency string).

Specification

Designation	Diameter of caught pipes, mm	Connection thread as per GOST 28487-90
TV-48, 60, 73, 89, 102, 114, 127, 168	48, 60, 73, 89, 102, 114, 127, 168	З-88
TVP-48, 60, 73, 89, 102, 114
TVU-48, 60, 73, 89, 102, 114, 127, 168

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RELEASED EXTERNAL CLUTCH CASING GRABS TMO

The released mechanical external casing grabs (TMO-89-116) are intended for catching the clutch or rising the emergency string of pump and compressor, drill pipes of the diameter 60 or 73 mm in full. The casing grabs have a reliable gripping mechanism, preventing false freeing of emergency instrument during its rise. The construction of casing grabs provides a possibility to free emergency object when it is impossible to remove it from the bore. There are left and right casing grabs.

Specification

Designation	Diameter of caught pipes, mm	Connection thread as per GOST 28487-90
ТМО-89-116	60, 73	З-88

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EXTERNAL CASING GRABS TN, TNZ, TNS

The external casing grabs are intended for removing pipes from the bore in full or in parts, for removing the emergency string of pump and compressor, drill or casing pipes while performing fishing operations. The catch of collet type catches the external surface, clutch or heading of pipe. There are left and right casing grabs. TNZ – External lock casing grabs

Specification

Code of casing grabs standard size	Caught sizes of pipes, mm	External diameter, mm	Connection thread as per GOST 28487-90
TN-92	92	123	З-76
TN-114/60/48	48,6	114	З-76
TN-146	60,73,89	122	З-76
TN-168	60,73,89	140	З-76
TN-122/33/48-01	33,48	122	З-76
TN-122/33/48-02	33,48	122	З-76
TN-122/60/73/89	60,73,89	122	З-76
Code of casing grabs standard size	Nominal thrust force, kN	External diameter, mm	Connection thread as per GOST 28487-90
TNS-60	1000	108	З-66
TNS-73	1100	120	З-76
TNS-89	1300	140	З-88
TNS-102	1400	145	З-102
TNS-114	2000	170	З-121
TNS-127	2700	196	З-133
TNS-140	3000	196	З-147
TNS-147	2700	200	З-147
TNS-168	3900	200	З-171

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INTERNAL SPIRAL CASING GRABS TVS

The internal spiral casing grabs TVS are intended for catching or removing emergency drill strings and boring casings If necessary, the casing grabs can be freed from caught pipes.

Specification

Load capacity, кN	2000
Diameter of removed pipes, mm	140-146-147
Weight, kg	130

Upward

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