Designed to disconnect drill string from the abandonment equipment when the cement plug being installed.

No.

Parameter

Value

1

Body diameter D, in (mm)

4 (102)

2

Top sub diameter D1, in (mm)

4.252 (108)

3

Bore diameter d, in (mm)

2.441 (62)

4

Length, ft (mm)

2.458 (749)

5

Connecting thread

NUE Api tubing 3-1/2 (89 GOST 633-80)

6

Weight, lb (kg)

63.945 (29)

7

Check screw shear pressure, psi (MPa)

1 885±145 (13±1)

8

Fallback method of string disconnection—mechanical

Special left-hand trapezoidal thread

94х8(Р4)LH

9

Maximum operating temperature, °F (°С)

212(100)