Round Mandrel Slip Joint
Round Mandrel Slip Joint
Round Mandrel Slip Joint is mainly used in FUL-FLO formation test, hook wall test, fracturing, acidizing operations in drilling pontoon. On this account, the center shaft expansion joint could compensate floating up and down in drilling pontoon and guarantee to set-down right amount of gravity in downhole tool. This joint can also be used in overland formation testing operation. It compensates pipe string elongation and contraction due to temperature and pressure changes. The joint can also connected to the lower end of multi-flow testing valve and provide free travel for testing valves switch.
Technical parameter
Specifications/"
3-7/8"
5"
OD (mm)
99
127.5
Drift OD (mm)
45
57
Total length (mm)
4688
4688
Amount of stretching(mm)
1524
1524
Working pressure (Mpa)
70
105
Working temperature (°C)
-29~+177
-29~+177
Resistance to Tension (KN)
870
1440
Internal Pressure Strength (Mpa)
105
147
Outer Pressure Resistance (Mpa)
100
137
Torque Strength (KN.m)
10.5
24
Binding Screw Thread
2-7/8" CAS & 2-7/8" EU
3-7/8"CAS & 3-1/2" IF
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