SYNERGISTIC CHEMISTRY TO PREVENT SILICATE SCALING

摘要

Two intermediates that have known separate efficacy for preventing scales such as calcium carbonate, magnesium carbonate and barite (barium sulfate) were discovered to have a synergistic effect for preventing or inhibiting silicate scaling when used together. Each of these intermediates is ineffective at preventing silicate scaling when used alone; however, when used in combination, they have a synergistic benefit. In one non-limiting embodiment the components include a polyamine phosphonate and a lysine tetra(alkylene)phosphonate.

主权项

1. A method for inhibiting or preventing the formation of silicate scales, which method comprises adding to a fluid having a potential for silicate scaling an amount of a chemical blend effective to inhibit or prevent the formation of silicate scales, where the chemical blend comprises:
at least one first chemical that is a polyamine phosphonate; and at least one second chemical that is a lysine tetra(alkylene)phosphonate.