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[China]
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Address: No.25, Cross Building, Gaoxin 6th Road, Hi-tech Zone, Xi'an, China
Contact name:LEE
XI 'AN ZZ TOP OIL TOOLS CO.,LTD |
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Dual Activated Circulation Valve For Coiled Tubing Tool String
The Dual Activated CirculationValve offers the traditional method
of returning circulation of the toolstring through use of a drop
ball. In addition, the dual activated circulation valve is capable
of operating through internal overpressure within the tubing
string. In case that no circulation can be established, a
certain pressure shall be built up inside the coiled tubing, and
the burst disc will burst when the applied pressure is greater than
the
burst pressure so that the circulation is returned.
Conventional dual circulation valves use a burst or rupture disc to
return circulation through overpressure. However, the
dual-activated circulation valve offers a pressure differential
activated piston. The piston activation pressure can be
predetermined at the surface through shear pins, offering superior
flexibility and considerable savings on redress.
Specification of Dual Activated Circulation Valve
| CT Size | Max. OD(in) | Min. ID | Operating Pressure | ||||||||||||||||||||||||||||||
| 1 11/16” | 1.688” | 0.406” | 5000psi | ||||||||||||||||||||||||||||||
| 1 3/4” | 1.750” | 0.406” | 5000psi | ||||||||||||||||||||||||||||||
| 2 1/8” | 2.125” | 0.625” | 5000psi | ||||||||||||||||||||||||||||||
| 2 3/8” | 2.375” | 0.625” | 5000psi | ||||||||||||||||||||||||||||||
| 2 7/8” | 2.875” | 0.750” | 5000psi | ||||||||||||||||||||||||||||||
| 3 1/8” | 3.125” | 0.750” | 5000psi | ||||||||||||||||||||||||||||||
