| 摘要 |
Corrosive effects arising during oilfield treatment applications are inhibited and/or prevented by introducing into an oil or gas well at least one compound of formula I: wherein: R1 is independently H, -[-CnH2nO-]a-H, or an alkyl group having from 1 to about 24 carbon atoms; R2 is independently H or -[-CnH2nO-]b-H, R3 is independently -[-CH2]c-, or -CdH2d-[-OCnH2n-]e-, R4 is independently H or -[-CnH2nO-]f-H, R5 is independently H or -[-CnH2nO-]g-H, a is from about 1 to about 8; b+f+g is between 0 to about 30; c is from about 1 to 6; d is from about 1 to 6; e is from about 1 to about 8; and n is 2 or 3. Such corrosive effects are especially inhibited in the treatment of sour wells where H2S corrosion is a potential problem as well as conduits used during the treatment of subterranean formations.
|
