Compositions comprising aminated dextrin compounds and subterranean treatment methods using the same

A method comprising:

• providing a clay stabilizing composition comprising:
• an amine-functionalized dextrin compound, the amine-functionalized dextrin compound comprising 2 to about 20 glucose units linked together with α(1,4) glycosidic bonds, and a portion of the glucose units being oxidatively opened and functionalized with at least one amine group at a site of oxidative opening, and
• an amine-functionalized dextran polymer, the amine-functionalized dextran polymer comprising a plurality of glucose units linked together with α(1,6) glycosidic bonds, and a portion of the glucose units being oxidatively opened and functionalized with at least one amine group at a site of oxidative opening;
• introducing the clay stabilizing composition into a subterranean formation bearing a clay-containing mineral;
• and
• interacting the amine-functionalized dextrin compound and the amine-functionalized dextran polymer with the clay-containing mineral to affect stabilization thereof;
• wherein the amine-functionalized dextrin compound and the amine-functionalized dextran polymer operate synergistically with one another when interacting with the clay-containing mineral, such that the clay stabilizing composition is more effective for clay stabilization than is an equal amount of either the amine-functionalized dextrin compound or the amine-functionalized dextran polymer.