Method for treating the area surrounding a well using an aqueous gelling solution comprising an alkaline potassium silicate solution and an acetic acid
AssigneeIfp Energies Nouvelles
InventorsOlivier Sissmann, Marc Fleury, Michel Chardin
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Abstract
The present invention relates to a process for the treatment of the area (10) surrounding a well (1) in which an aqueous gelling solution comprising an alkaline potassium silicate solution and an acetic acid is prepared and then injected into a subterranean formation. This aqueous gelling solution makes it possible, by virtue of these gelling properties, to block the area (10) surrounding the well (1).
Claims15
A process for the treatment of the area surrounding a well within a subterranean formation, the well being for storage of acid gas in the subterranean formation, the process comprising:
- preparing an aqueous gelling solution comprising an alkaline potassium silicate solution and an acetic acid;
- and
- injecting the aqueous gelling solution from the well into the subterranean formation, in order to treat, within the subterranean formation, the area surrounding the well,
- wherein the acid gas is stored in the subterranean formation prior to injecting the aqueous gelling solution.
A process for treatment of an area surrounding a well in a subterranean formation that stores acid gas, the process comprising:
- preparing an aqueous gelling solution by combining components comprising an alkaline potassium silicate solution and acetic acid;
- and
- injecting the aqueous gelling solution through the well and into the subterranean formation that stores the acid gas, the aqueous gelling solution treating the area surrounding the well in the subterranean formation.
Dependencies are inferred from the claim text.