Method of inhibiting corrosion in a conduit

Details Method of inhibiting corrosion in a conduit Method of inhibiting corrosion in a conduit

2008-12-29

2009-12-01

Suchfield, George (Department: 3676)

Wells

Processes

Entraining or incorporating treating material in flowing...

C166S312000, C166S371000, C166S902000, C507S090000, C507S939000

Reexamination Certificate

active

07624805

ABSTRACT:
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:R1is independently H, —[—CnH2nO—]a—H, or an alkyl group having from 1 to about 24 carbon atoms;R2is independently H or —[—CnH2nO—]b—H,R3is independently —[—CH2]c—, or —CdH2d—[—OCnH2n—]e—,R4is independently H or —[—CnH2nO—]f—H,R5is 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; andn 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.

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