Patent ID: 7279447
Filing Date: 2007-10-09
Classification: C09K,C11D

Abstract:
1. In a method for drilling, completing, cementing, stimulating, fracturing, acidizing, working over, or treating a subterranean well, the improvement comprising injecting into the well a fluid comprising one or more compounds according to formula (I) wherein each R is independently selected from the group consisting of C4-C20 branched, linear, and cyclic alkyl, alkenyl, aryl, and aralkyl moieties; C4-C20 branched, linear, and cyclic alkyl, alkenyl, aryl, and aralkyl moieties bearing a carbonyl group or one or more heteroatoms selected from O, S, and N; glycol ether moieties of the formula R 3 (OCH 2 CH 2 ) n —; aminoethylene moieties of the formula R 3 (NHCH 2 CH 2 ) n —; and thioether moieties of the formula R 3 S(CH 2 ) n —; wherein R 3 is H or linear C1-C12 alkyl and n is an integer from 1 to 15, R 1 and R 2 are each independently H or a C1-C4 alkyl group, and Z is S, SO, or SO 2 .