Products > APR Drill Stem Testing Tools

Safety Joint


Product Number: KW-DST-03 The safety joint is an optional emergency backoff device.


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KINGWELL Safety Joint Features & Benefits: 
 
The safety joint is an optional emergency backoff device. The safety joint releases the workstring and tools above the packer if the packer becomes stuck during operations.The design of the safety joint makes unintentional operation difficult. 
 
Safety joint is installed on the position required for subsurface drill stem. Safety joint can bear all kinds of loads for pulling or pressing also be used to transmit torque in fishing operation. 
 
KINGWELL Safety Joint Technical Data: 
 
Casing
Size
OD
in. (cm)
ID
in. (cm)
End
Connections
Length
in. (cm)
Tensile
Rating** lb (kg)
Burst
Rating**psi (kPa)
Collapse
Rating**psi
(kPa)
2 3/8 1.81
(4.60)
0.68
(1.73)
 
1.06 10 RD
24.3
(61.7)
36,000
(16 330)
9,600
(66190)
23200
(159959)
4 1/2 to 5 3.68
(9.35)
1.90
(4.83)
 
2 3/8 EUE
38.5
(97.8)
95,000
(43 092)
11,500
(79 290)
11,500
(79 2 90)
7 to 7 5/8 5.00
(12.70)
2.44
(6.20)
 
2 7/8 EUE
39.9
(101.4)
164,000
(74 390)
12,000
(82 738)
10,900
(75153)
8 5/8 to 13 3/8 6.12
(1554)
3.12
(7.92)
 
41/2 IF
42.7
(108.5)
301,000
(136 533)
13,700
(94 459)
10,400
(71 706)
 
 
 KINGWELL Safety Joint Drawing:

For 7" safety joint



For 9 5/8" Safety joint






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