公开(公告)号：US10988670B2

公开(公告)日：2021-04-27

申请号：US16796469

申请日：2020-02-20

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Ime Bassey Obot ,  Saviour Alphonsus Umoren

IPC: E21B43/28 ,  C09K8/54 ,  C09K8/74 ,  C09K8/70 ,  C23F11/14

Abstract: A method of inhibiting corrosion of metal during acid stimulation of an oil and gas well, whereby the oil and gas well is treated with an acidic treatment fluid that includes 10 to 28 wt. % of an acid, based on a total weight of the acidic treatment fluid, and 0.01 to 5% of a pyrazine corrosion inhibitor by weight per total volume of the acidic treatment fluid, wherein the pyrazine corrosion inhibitor is 2,3-pyrazine dicarboxylic acid, pyrazine-2-carboxamide, 2-methoxy-3-(1-methylpropyl) pyrazine, or combinations thereof.

公开(公告)号：US10988671B2

公开(公告)日：2021-04-27

申请号：US16796492

申请日：2020-02-20

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Ime Bassey Obot ,  Saviour Alphonsus Umoren

IPC: E21B43/28 ,  C09K8/54 ,  C09K8/70 ,  C09K8/74 ,  C23F11/14

Abstract: A method of inhibiting corrosion of metal during acid stimulation of an oil and gas well, whereby the oil and gas well is treated with an acidic treatment fluid that includes 10 to 28 wt. % of an acid, based on a total weight of the acidic treatment fluid, and 0.01 to 5% of a pyrazine corrosion inhibitor by weight per total volume of the acidic treatment fluid, wherein the pyrazine corrosion inhibitor is 2,3-pyrazine dicarboxylic acid, pyrazine-2-carboxamide, 2-methoxy-3-(1-methylpropyl) pyrazine, or combinations thereof.