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Keywords: hydraulic control line
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Proceedings Papers

Paper presented at the Canadian Unconventional Resources Conference, November 15–17, 2011
Paper Number: SPE-147547-MS
... overcome a spring to open or close the ICV when the hydraulic control line was pressurized. When the control line was depressurized, the spring was allowed to move the ICV to its original position. The spring in these systems could be mechanical, a gas charge, or even a compressible fluid...

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