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Drawdown or differential pressure actuated flow valve mechanism

IP.com Disclosure Number: IPCOM000029002D
Publication Date: 2004-Jun-10

Publishing Venue

The IP.com Prior Art Database

Abstract

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.