Oil formulation for preventing water penetration in underground formations
AssigneeRhodia Operations
InventorArnaud CADIX
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Abstract
The present invention relates to the use of an oil formulation in the field of the oil industry, in particular for the prevention of water penetration. The formulation according to the invention is in particular intended to be injected into underground formations, such as injection wells or production wells.
Claims21
A liquid oil formulation comprising:
- (a) a compound comprising at least two isocyanate functional groups;
- (b) a surfactant;
- and
- (c) an aromatic oil capable of dissolving compounds (a) and (b).
(canceled)
A water-in-oil emulsion comprising a continuous phase which comprises an aromatic oil and wherein the water/oil interface is at least partially covered with a polyurea-type polymer obtained by hydrolysis and condensation of a compound comprising at least two isocyanate functional groups and wherein said aromatic oil is capable of dissolving said compound comprising at least two isocyanate functional groups and a surfactant.
Dependencies are inferred from the claim text.