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1. (WO2010118151) WELL SCREEN WITH DRAINAGE ASSEMBLY

Pub. No.:    WO/2010/118151    International Application No.:    PCT/US2010/030264
Publication Date: Fri Oct 15 01:59:59 CEST 2010 International Filing Date: Thu Apr 08 01:59:59 CEST 2010
IPC: E21B 43/08
E21B 43/10
Applicants: HALLIBURTON ENERGY SERVICES, INC.
BONNER, Aaron, James
LOPEZ, Jean-Marc
Inventors: BONNER, Aaron, James
LOPEZ, Jean-Marc
Title: WELL SCREEN WITH DRAINAGE ASSEMBLY
Abstract:
A well screen assembly 240, 240' has an elongate base pipe 230 having apertures therein. A filtration layer resides around the base pipe. A drainage assembly 200, 200' resides between the base pipe and the filtration layer. The drainage assembly includes a plurality of elongate risers 205 carried on a mesh 225. The drainage layer supports the filtration layer apart from the elongate base pipe and defines an elongate passage 215 between the base pipe and the filtration layer that communicates fluid laterally through the drainage assembly.