Methods for stabilizing subterranean formations
AssigneesSaudi Arabian Oil Company, King Fahd University of Petroleum and Minerals
InventorsManar AlAhmari, Abdulmohsen Alhumam, Mohamed A. Mahmoud
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Abstract
Described herein are methods for stabilizing a subterranean formation. The method may include introducing urea into a subterranean formation, wherein the subterranean formation includes sand, and wherein the subterranean formation includes a calcium salt, and introducing an amylase into the subterranean formation, wherein the amylase hydrolyzes the urea to form ammonium carbonate, and calcium in the calcium salt reacts with carbonate in the ammonium carbonate to form a calcium carbonate precipitate.
Claims20
A method for stabilizing a subterranean formation, the method comprising:
- introducing urea into a subterranean formation, wherein the subterranean formation comprises sand, and wherein the subterranean formation comprises a calcium salt;
- and
- introducing an amylase into the subterranean formation, wherein the amylase hydrolyzes the urea to form ammonium carbonate, and calcium in the calcium salt reacts with carbonate in the ammonium carbonate to form a calcium carbonate precipitate.
Dependencies are inferred from the claim text.