Well tool for gravel packing a well using low viscosity fluids

Details Well tool for gravel packing a well using low viscosity fluids Well tool for gravel packing a well using low viscosity fluids

1996-03-04

1997-11-25

Bagnell, David J.

Wells

Processes

Graveling or filter forming

166 51, E21B 4304

Patent

active

056901755

ABSTRACT:
A method and well tool for using a low-viscosity slurry to gravel pack an interval. The well tool is comprised of a conduit which includes a main screen and an upper by-pass screen. The tool is lowered into the interval and slurry is pumped into the annulus around the screen whereby the fluid from the slurry is lost into casing perforations while the gravel falls to the bottom of the annulus to form the gravel pack. When the gravel rises above the uppermost perforations, fluid from the slurry by-passes the gravel pack by flowing into the by-pass screen, through a washpipe in the conduit, and out the lower end of the main screen to thereby pack perforations in the casing and to improve the gravel distribution of the gravel pack within the annulus.

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