Method and apparatus for gravel packing wells

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

1976-02-26

1977-09-06

Novosad, Stephen J.

Wells

Processes

Graveling or filter forming

166 51, 166236, E21B 3300, E21B 4304

Patent

active

040461980

ABSTRACT:
The annular passage defined by the interior of a perforated liner and the exterior of a stinger pipe extending through the liner is substantially restricted so that the resistance to flow in the annular passage is increased sufficiently to maintain high fluid flow velocity outside the liner during gravel packing. The increased flow velocity prevents the premature settling of gravel and stabilizes the formation of gravel dunes in the wellbore annulus, thereby significantly increasing gravel packing efficiency in inclined wells. The proper flow restriction can be obtained using a wide diameter stinger pipe.

REFERENCES:
patent: 2905245 (1959-09-01), De Priester
patent: 2942664 (1960-06-01), Burns
patent: 3153451 (1964-10-01), Chancellor et al.
patent: 3637010 (1972-01-01), Maly et al.
patent: 3913675 (1975-10-01), Smyrl
patent: 3913676 (1975-10-01), Barbee, Jr. et al.

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