Patent Number: 7,100,686

Title: Controlled-pressure drop liner

Abstract: The invention relates to a controlled-pressure drop liner device comprising a circumscribed filter element (9) centred on a base tube (1) by longitudinal braces in relation to the axis of the tube and arranged according to the diameter of the tube so as to divide the annular space defined by the filter element and the tube into sectors delimited by the braces, and in which collecting tubes (5) are arranged and open into the sectors by one end. The invention applies to tubings intended for drainage or injection in a geologic formation, a hydrocarbon reservoir for example.

Inventors: Wittrisch; Christian (Rueil Malmaison, FR)

Assignee: Institut Francais du Petrole

International Classification: E03B 3/20 (20060101)

Expiration Date: 9/05/02018