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Hydrostatic Support Valve.
The Hydrostatic Support Valve (HSV) is a device which supports a column of fluid in the tubing above the valve. The valve is opened via differential pressure from the annulus or as the result of functioning an Electric Submersible Pump (ESP). This action causes the upper seal sleeve to move off seat allowing production fluid to enter the tubing via the large flow ports in the main body of the tool.
The HSV also includes a pump through facility that enables the operator to pump fluid down through the valve if desired. This feature is locked closed until required. To activate the pump through facility pressure is applied to the tubing above. At a predetermined point, screws will shear releasing the pump through sleeve and opening the pump through ports. Subsequent pump through pressures will be less than the initial activation pressure. Alternatively the pump through facility may be activated using a jar and prong. Jarring down on a no-go shoulder located in the ID will move the pump through sleeve.
The HSV will continue to function in its primary mode of operation even after the pump through feature has been activated. However, the column of fluid supported by the valve will now be governed by the operation pressure setting of the pump through facility.
A junk extension is an additional feature of this valve, designed to catch well debris that can block the flow ports of similar type tools. This feature is located below the flow ports and can be lengthened or reduced to suit specific customer requirements.
|End Connections||To suit packer / lock|
|Material||17-4ph / 13% c r/ Inconel|
|Flow Area||6.166 in²|
|Length||62.75" (x / 2ft junk extension)|
|Pressure Rating||5,000 psi|
|Cracking Pressure||12psi (or as requested)|
Other sizes and ratings are available on request.
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