Gel-based subterranean formation hardening compositions and methods thereof
AssigneesSaudi Arabian Oil Company, King Fahd University of Petroleum and Minerals
InventorsWaheed Syed Arshad, Abdullah Kamal Al Adi, Murtada Saleh Aljawad, Murtadha J. Altammar
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Abstract
Gel-based subterranean formation hardening compositions and methods thereof may comprise introducing an aqueous carrier fluid comprising a gel and an ammonium phosphate salt into a subterranean formation comprising a carbonate mineral; and interacting the carbonate mineral with the ammonium phosphate salt to convert at least a portion of the carbonate mineral into a hydroxyapatite mineral; wherein the subterranean formation has an increased hardness after forming the hydroxyapatite mineral.
Claims19
A method comprising:
- introducing an aqueous carrier fluid comprising a gel and an ammonium phosphate salt into a subterranean formation comprising a carbonate mineral;
- wherein the gel comprises hydroxypropyl guar, carboxymethyl hydroxypropyl guar, or a combination thereof;
- and
- interacting the carbonate mineral with the ammonium phosphate salt to convert at least a portion of the carbonate mineral into a hydroxyapatite mineral;
- wherein the subterranean formation has an increased hardness after forming the hydroxyapatite mineral.
A method comprising:
- stimulating a subterranean formation comprising a carbonate mineral by performing hydraulic fracturing upon the subterranean formation;
- wherein the hydraulic fracturing introduces a plurality of fractures into the subterranean formation, and a plurality of proppant particulates are placed in the plurality of fractures during the hydraulic fracturing;
- after stimulating the subterranean formation, introducing an aqueous carrier fluid comprising a gel and diammonium hydrogen phosphate into the subterranean formation;
- wherein the gel comprises hydroxypropyl guar, carboxymethyl hydroxypropyl guar, or a combination thereof;
- wherein the aqueous carrier fluid has a diammonium hydrogen phosphate concentration of about 0.8 M to about 1 M and a total dissolved solids concentration of less than about 600 ppm;
- and
- converting at least a portion of the carbonate mineral into a hydroxyapatite mineral by interacting the carbonate mineral with the diammonium hydrogen phosphate.
Dependencies are inferred from the claim text.