Method and apparatus for gravel packing of wells

Details Method and apparatus for gravel packing of wells Method and apparatus for gravel packing of wells

1993-01-07

1994-08-02

Melius, Terry Lee

Wells

Processes

Graveling or filter forming

166 51, 166235, E21B 4304, E21B 4308

Patent

active

053336887

ABSTRACT:
A method and apparatus for gravel packing wherein a gravel slurry is distributed to different points of a wellbore annulus from a internal passage within the apparatus thereby protecting the passage from damage during operation. The apparatus is comprised of a plurality of gravel screen units which are connected together at the lower end of a workstring. Each gravelscreen unit is comprised of a gravel screen and a valve-outlet assembly which, in turn, is comprised of a collar having an outlet and a valve for opening and closing the outlet. A washpipe is positioned within the workstring and provides a passage for delivering the slurry internally to the outlets in each of the valve-outlet assemblies. The valves are closed when the washpipe is removed.

REFERENCES:
patent: 4424859 (1984-01-01), Sims et al.
patent: 4945991 (1990-08-01), Jones
patent: 4995456 (1991-02-01), Cornette et al.
patent: 5033549 (1991-07-01), Champeaux et al.
patent: 5082052 (1992-01-01), Jones et al.
patent: 5113935 (1992-05-01), Jones et al.
patent: 5161613 (1992-11-01), Jones
patent: 5161618 (1992-11-01), Jones et al.

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