Block copolymers for enhanced oil recovery
AssigneeThe Standard Oil Company
InventorsMuyen M. Wu, Lawrence E. Ball
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Abstract
Water soluble block copolymers having two or more water soluble polymer blocks useful for controlling the viscosity of aqueous media used in enhanced oil recovery techniques are described.
Claims10
In a process of recovering hydrocarbon from a hydrocarbon-bearing subterranean formation having at least one injection means in fluid communication with at least one production means and wherein polymer solution is injected into the formation to displace hydrocarbon toward the production means through which hydrocarbon is recovered, the improvement comprising injecting a polymer solution comprising a water soluble block copolymer, said copolymer comprising two or more water soluble polymer blocks.
Dependencies are inferred from the claim text.