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Drawdown or differential pressure actuated flow valve mechanism Disclosure Number: IPCOM000029002D
Publication Date: 2004-Jun-10

Publishing Venue

The Prior Art Database


The purpose is to provide an downhole actuation mechanism that does not require mechanical intervention and can be used in wells open to the formation. The novel features are the combined effects of using an induced differential pressure (drawdown) and a trapped hydrostatic chamber to release tool actuation.