C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/54 (2006.01)
Patent
CA 2580595
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: (see formula I) wherein: R1 is independently H, -[-C n H2n O-]a-H, or an alkyl group having from 1 to about 24 carbon atoms; R2 is independently H or -[-C n H2n O-]b-H, R3 is independently -[-CH2]c-, or -C d H2d-[-OC n H2n-]e-, R4 is independently H or -[-C n H2n O-]f-H, R5 is independently H or -[- C n H2n O-]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.
Les effets corrosifs des traitements dans les champs pétrolifères sont inhibés et/ou prévenus grâce à l'introduction, dans un puits de pétrole ou de gaz, d'au moins un composé de formule I : (voir la formule I) où R1 est, indépendamment des autres groupements, un H, un -¬-CnH2nO-|a-H ou un alkyle comptant 1 à environ 24 atomes de carbone; R2 est, indépendamment des autres groupements, un H ou un -¬-Cn H2nO-|b-H; R3 est, indépendamment des autres groupements, un -¬-CH2|c- ou un -Cd H2d-¬-OCnH2n-|e-; R4 est, indépendamment des autres groupements, un H ou un -¬-CnH2nO-|f-H; R5 est, indépendamment des autres groupements, un H ou un -¬- Cn H2nO-|g-H; a se situe entre environ 1 et environ 8; b + f + g se situe entre 0 et environ 30; c se situe environ entre 1 et 6; d se situe environ entre 1 et 6; e se situe entre environ 1 et environ 8; n est égal à 2 ou 3. Ces effets corrosifs sont particulièrement inhibés dans le cas du traitement de puits acides où la corrosion au H2S peut poser un problème ainsi que des conduites utilisées lors du traitement des formations souterraines.
Hoppe Ronald L.
Martin Richard L.
Pakulski Marek K.
Schaffer Thane D.
Baker Hughes Incorporated
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Bj Services Company
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