Stable percarboxylic acid compositions and uses thereof

摘要

The present invention relates generally to stable percarboxylic acid compositions comprising, inter alia, at least two stabilizing agents, and various uses for water treatments, including water treatments in connection with oil- and gas-field operations. The present invention also relates to slick water compositions and gel based compositions that comprise stable percarboxylic acid compositions and the use thereof in oil- and gas-field operations.

主权项

1. A composition, which composition comprises:
1) a C1-C22 carboxylic acid; 2) a C1-C22 percarboxylic acid; 3) hydrogen peroxide; 4) a first stabilizing agent, which is a picolinic acid or a compound having the following Formula (IA): wherein
R1 is OH;R2 is OH;each R3 is independently (C1-C6)alkyl, (C2-C6)alkenyl or (C2-C6)alkynyl; andn is a number from zero to 3;or a salt thereof, and wherein said first stabilizing agent has a concentration of at least about 0.005 wt-%; or a compound having the following Formula (IB): wherein
R1 is OH;R2 is OH;each R3 is independently (C1-C6)alkyl, (C2-C6)alkenyl or (C2-C6)alkynyl; andn is a number from zero to 3;or a salt thereof; 5) a second stabilizing agent, which is a compound having the following Formula (IIA): wherein
R1, R2, R3, and R4 are independently hydrogen;R5 is (C1-C6)alkyl, (C2-C6)alkenyl or (C2-C6)alkynyl; andR6 is hydrogen, (C1-C6)alkyl, (C2-C6)alkenyl or (C2-C6)alkynyl;or a salt thereof, and wherein said second stabilizing agent has a concentration of at least about 0.1 wt-%; and wherein said C1-C22 percarboxylic acid has a concentration of about 10 wt-% to about 30 wt-%, said hydrogen peroxide has a concentration of at least about 0.1 wt-%, said C1-C22 percarboxylic acid has a concentration of at least about 3 times of the concentration of said hydrogen peroxide, and said composition has a pH at about 4 or less, and said composition retains at least about 80% of the C1-C22 percarboxylic acid activity after storage of about 30 days at about 50° C.