Wells – Processes – Fluid flow causes pellet to block opening in wall of conduit
Patent
1978-06-12
1979-07-10
Novosad, Stephen J.
Wells
Processes
Fluid flow causes pellet to block opening in wall of conduit
166307, E21B 3313, E21B 4327
Patent
active
041604822
ABSTRACT:
A method for sequential treatment of formation strats when treating fluid is pumped into a well at a matrix rate by temporarily closing perforations in the well casing. The perforations are closed by ball sealers injected into the wall during the treatment. The ball sealers are sized to plug the perforations and have a density less than the density of the treating fluid. The treating fluid is injected at a rate which transports the ball sealers to the perforations but which is sufficiently low to prevent formation fracture.
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Cooke, Jr. Claude E.
Erbstoesser Steven R.
Muecke Thomas W.
Casamassima Salvatore J.
Exxon Production Research Company
Martin Robert B.
Novosad Stephen J.
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