Low density ball sealers for use in well treatment fluid diversi

Details Low density ball sealers for use in well treatment fluid diversi Low density ball sealers for use in well treatment fluid diversi

1979-05-03

1981-01-13

Novosad, Stephen J.

Wells

Processes

Fluid flow causes pellet to block opening in wall of conduit

166193, 166281, E21B 3313, E21B 4326, E21B 4327

Patent

active

042444250

ABSTRACT:
A ball sealer for use as a diverting agent when treating a well having a perforated casing. The ball sealer is sized to plug a perforation and has a density less than the treating fluid. The ball sealer comprises a material, such as syntactic foam or polymethylpentene. The ball sealer is also preferably provided with a protective covering material. After some of the treating fluid has been injected into the well, the ball sealers are injected and carried by the fluid flow down to the perforations where they seat and divert the further injection of treating fluid through the remaining open perforations.

REFERENCES:
patent: 2754910 (1956-07-01), Derrick et al.
patent: 3010514 (1961-11-01), Fox
patent: 3376934 (1968-04-01), Willman et al.
patent: 3437147 (1969-04-01), Davies
patent: 4102401 (1978-07-01), Erbstoesser
patent: 4139060 (1979-02-01), Muecke et al.
patent: 4160482 (1979-07-01), Erbstoesser et al.

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