Pump Out Reverse Circulating Valve Sub For Drill Stem Test Equipment

Pump Out Reverse Circulating Valve / Circulating Sub For Drill Stem Testing
Service

The Pump Out Reverse Circulating Valve is a Hollow Plug Impact type Circulating
Sub. The Pump Out Reverse Circulating Valve is used in the more difficult well
testing operations, where depth and high-pressure differential across the plug
sometimes make it difficult to open a conventional reversing sub.

The Pump Out Reversing Sub allows removal of free oil or gas in the pipe
(minimizing the risk of fire) while the tool is coming out of the hole. It is
also used to circulate and condition the drilling fluid when necessary.

The Pump Out Reversing Circulating Valve / Circulating Sub also equipped with a
shear pin with plate to be a backup device in case the plug can not be broken
by flute bar, applying the tubing pressure, the pin can be sheared by the
pressure and build the communication.

Technical parameter of Pump Out Reverse Circulating Valve


1 OD 5”(127.5mm) 4.25”(108mm) 6.25”(158.8mm)
2 ID 57mm 45mm 82mm
3 Length 500mm 450mm 520mm
4 Working Pressure 35Mpa(5000psi) 35Mpa(5000psi) 35Mpa(5000psi)
5 Tensile Strength 2034KN 1418KN 2882KN
6 Burst Pressure 165Mpa 156Mpa 182Mpa
7 Collapse Pressure 148Mpa 146Mpa 168Mpa
8 Torque Strength 43kN.m 21.6kN.m 55kN.m
9 Working Temp. -29oC~180oC
10 Service H2S NACE MR0175(Above 175F)
11 Connection Thread
3 1/2” /EUE/IF/
CAS Box Pin

3 1/2” /EUE/IF/
CAS Box Pin

4 1/2” IF Box Pin

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