High pressure micro solenoid valve for oil well tools
08 August 2012
Lee Products has introduced a reduced diameter solenoid valve that can help designers meet the challenges posed by the limited space envelopes of oil well tools.
This high pressure micro solenoid valve has a maximum outside diameter of 14mm and is designed for oil well completion tools that have limited space for components.
Today, a large majority of completion and intervention tools are self-powered so they do not need electrical or hydraulic power to be transmitted from the surface down hole via an umbilical cable. The power source is usually a number of AA size batteries and designers have to be able to package these power sources into the component. This means designers really want a solenoid valve to be no larger in diameter than these batteries and this is where Lee Products' new valve ticks all the right boxes.
The combination of a reduced outside diameter with the largest possible inside diameter will enable operators to use a wider range of intervention tools, as well as increasing the flow rate of oil being produced. Also, like all Lee Products solenoid valves, this model incorporates innovative MultiSeal technology.
This feature radically simplifies the port layout and allows total porting flexibility 360º around the seal, without the need for O-rings or anti-extrusion rings.
The result is significant space savings, reduced machining costs and improved reliability compared with traditional sealing methods.
The solenoid valve is a single coil, 3-way, normally closed device, capable of operating up to 5,000psid at a maximum voltage of 32Vdc and typically flowing 0.12USGPM at 200psid, but could easily be designed as a normally open version. In order to maintain the same power delivered by the coil, the length of the coil has been increased to 68mm.
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