公开(公告)号：US20150118105A1

公开(公告)日：2015-04-30

申请号：US14514626

申请日：2014-10-15

Applicant: Baker Hughes Incorporated

Inventor： Zhengwei Liu ,  Sunder Ramachandran ,  Vaithilingam Panchalingam ,  Timothy Z. Garza ,  Paul Robert Stead ,  Stuart Edward Cook ,  Gordon T. Rivers ,  Vu Thieu ,  Heather Mceachern

IPC: C23F11/12

CPC classification number: C23F11/124 ,  C09K8/52 ,  C09K8/54 ,  C09K2208/20 ,  C09K2208/22 ,  C09K2208/32 ,  C23F11/08 ,  C23F11/10 ,  C23F11/143

Abstract: Pitting corrosion of stainless steel occurs in solutions of organic acid, such as tartaric acid, in an electrolyte solution with methanol. However, methanolic solutions containing at least one organic halide and at least one organic hydroxyacid and some water provide reduced pitting corrosion of stainless steel. The organic hydroxyacid may be a hydroxy acid containing 2 to 10 carbon atoms with at least one hydroxyl group and at least one carboxylic acid group, in a non-limiting example, glycolic acid. The pH of the methanolic solution may range from about 3.5 to about 8.

Abstract translation: 不锈钢的点腐蚀发生在有机酸如酒石酸的溶液中，在电解质溶液中。 然而，含有至少一种有机卤化物和至少一种有机羟基酸和一些水的甲醇溶液可以减少不锈钢的点腐蚀。 在非限制性实例中，有机羟基酸可以是含有2-10个碳原子的羟基酸，具有至少一个羟基和至少一个羧酸基团。 甲醇溶液的pH可以在约3.5至约8的范围内。

公开(公告)号：US09732430B2

公开(公告)日：2017-08-15

申请号：US14514626

申请日：2014-10-15

Applicant: Baker Hughes Incorporated

Inventor： Zhengwei Liu ,  Sunder Ramachandran ,  Vaithilingam Panchalingam ,  Timothy Z. Garza ,  Paul Robert Stead ,  Stuart Edward Cook ,  Gordon T. Rivers ,  Vu Thieu ,  Heather McEachern

IPC: C23F11/12 ,  C23F11/00 ,  C23F11/08 ,  C23F11/10

CPC classification number: C23F11/124 ,  C09K8/52 ,  C09K8/54 ,  C09K2208/20 ,  C09K2208/22 ,  C09K2208/32 ,  C23F11/08 ,  C23F11/10 ,  C23F11/143

Abstract: Pitting corrosion of stainless steel occurs in solutions of organic acid, such as tartaric acid, in an electrolyte solution with methanol. However, methanolic solutions containing at least one organic halide and at least one organic hydroxyacid and some water provide reduced pitting corrosion of stainless steel. The organic hydroxyacid may be a hydroxy acid containing 2 to 10 carbon atoms with at least one hydroxyl group and at least one carboxylic acid group, in a non-limiting example, glycolic acid. The pH of the methanolic solution may range from about 3.5 to about 8.

公开(公告)号：US09663666B2

公开(公告)日：2017-05-30

申请号：US14602943

申请日：2015-01-22

Applicant: Baker Hughes Incorporated

Inventor： Timothy Z. Garza ,  Stuart Edward Cook ,  Gordon T. Rivers ,  Vu Thieu ,  Paul Robert Stead

IPC: C09D5/08 ,  C07C7/20 ,  C07C63/06 ,  C07C9/04

CPC classification number: C09D5/084 ,  C07C7/20 ,  C07C9/04 ,  C07C63/06

Abstract: Corrosion of metal conduits by hydrate inhibitor formulations, particularly localized corrosion, is mitigated when the hydrate inhibitor formulation contains an effective amount of at least one hydroxyacid or equivalent selected from the group consisting of hydroxyacids having 2 to 20 carbon atoms and at least one hydroxyl group. The hydrate inhibitor formulation has an absence of methanol, but may include other alcohol solvents, diol or triol solvents, aromatic solvents and ketone solvents.