Method and apparatus for installing a well

Details Method and apparatus for installing a well Method and apparatus for installing a well

1993-06-17

1994-05-10

Novosad, Stephen J.

Wells

Processes

Graveling or filter forming

166 51, 166228, E21B 4304

Patent

active

053099940

ABSTRACT:
A well installation preform for locating and dispensing granular materials nto a bore hole around the screen of a well casing is disclosed. A cylindrical sleeve containing a liner is assembled about the screen end of the well casing. The space between the sleeve and the well casing is filled with an ordered layer of granular material including a filter material adjacent the screen, a sealing material above the filter material and the screen and a quantity of filler material above the sealing material. The lower end of the sleeve is blocked while the preform is lowered into the well. The sleeve is thereafter removed whereby the liner is everted and the granular material is uniformly dispensed about the well casing in the bore hole. The sealing material forms a seal above the filter material for establishing an isolated filtration zone about the screen. A method of constructing the well using the preform and the resulting well structure is also disclosed.

REFERENCES:
patent: 3216497 (1965-11-01), Howard et al.
patent: 3455387 (1969-07-01), Peters
patent: 3548935 (1970-12-01), Harkins
patent: 4936386 (1990-06-01), Colangelo
patent: 5078212 (1992-01-01), Boyle et al.
patent: 5115864 (1992-05-01), Gaidry et al.
patent: 5183110 (1993-02-01), Logan et al.

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