Patent ID: 6422312
Filing Date: 2002-07-23
Classification: E21B

Abstract:
For use in a well containing more than one production zone where the production zones are isolated from one another and where the production zones are produced into a common production tubing, a side pocket mandrel comprising:an elongated body member constructed for connection in a string of tubing and having a full opening bore and having side by side laterally offset elongated side pocket bores; at least one of said side pocket bores, herein called static pressure pocket, being constructed and arranged to receive a static pressure measuring tool; at least one of said side pocket bores, herein called fluid flow pocket, being constructed and arranged to provide a fluid flow passageway and means in said fluid flow pocket for developing a differential pressure from fluid flow through said fluid flow pocket; at least one of said side pocket bores, herein called pressure differential pressure pocket, being constructed and arranged to receive a differential pressure measuring tool; first passage means coupling said fluid flow pocket to said differential pressure pocket for enabling the measurement of differential pressure; and second passage means coupling said fluid flow pocket to said static pressure pocket for enabling the measurement of static pressure.