摘要 |
<p>Wellbore fluids containing stabilizing complexes capable of controlling hydration in swellable formations such as shale- and clay-containing formations and methods of using same are provided. In one aspect, embodiments disclosed herein relate to wellbore fluids that include an aqueous base fluid; and a stabilizing complex, wherein the stabilizing complex is prepared from the reaction of an alkali metal aluminate salt and one or more selected from a group that includes phosphoric acid, a phosphate salt, and an amine -phosphoric acid mixture. In another aspect the stabilizing complex may be formed from the reaction of a metal oxide and one or more selected from a group that includes phosphoric acid, phosphate salts, and amine-phosphoric acid mixtures.</p> |