Phosphinate inhibitor for scale squeeze applications

摘要

A squeeze treatment for preventing scale utilizes as the scale inhibitor a predominantly phosphinate containing composition comprising: - Mole Percent - -Ingredients Less Than -A. Monosodium phosphinicobis - 22 - (succinic acid) -B. Monosodium phosphinico- 26 - succinic acid -C. Sodium phosphonosuccinic acid 12 -D. Sodium phosphate 5 -E. Sodium phosphite 6 -F. Sodium hypophosphite, and 6 -G. A phosphinicosuccinic acid oligomer - having the probable structural formula: - - - wherein G exceeds 25 mole percent, M is H, Na, K, NH4, amine salts and mixtures thereof and m and n are either 0 or a small whole number with the proviso that either m or n is a small whole number and the sum of m plus n is greater than 2.