E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/04 (2006.01) E21B 34/14 (2006.01) E21B 43/08 (2006.01)
Patent
CA 2153250
A method and apparatus for gavel packing wherein a gravel slurry is distributed to different points of a wellbore annulus (11) from an internal passage within the apparatus (20) thereby protecting the passage from damage during operation. The apparatus (20) is comprised of a plurality of gravel screen units (30) which are connected together at the lower end of a workstring (14). Each gravel-screen unit (30) is comprised of a gravel screen (32) and a valve-outlet assembly (31) which, in turn, is comprised of a collar (35) having an outlet and a valve for opening and closing the outlet. A washpipe (50) is positioned within the workstring (14) and provides a passage for delivering the slurry internally to the outlets in each of the valve-outlet assemblies (31). The valves (38) are closed when the washpipe (50) is removed.
Jones Lloyd Garner
Yates Tommy J.
Gowling Lafleur Henderson Llp
Mobil Oil Corporation
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