公开(公告)号：US11987752B2

公开(公告)日：2024-05-21

申请号：US18058022

申请日：2022-11-22

Applicant: King Fahd University of Petroleum and Minerals

Inventor： Ime Bassey Obot ,  Ahmad A. Sorour

IPC: C09K8/74 ,  C09K8/54 ,  E21B41/02 ,  E21B43/25

CPC classification number: C09K8/74 ,  C09K8/54 ,  E21B41/02 ,  E21B43/25 ,  C09K2208/32

Abstract: A method of inhibiting corrosion of metal during acid stimulation of an oil and gas well that involves treating the oil and gas well 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 a corrosion inhibitor composition containing gelatin, wherein the gelatin is present in the acidic treatment fluid in a concentration of 0.1 to 10% by weight per total volume of the acidic treatment fluid.

公开(公告)号：US11479732B1

公开(公告)日：2022-10-25

申请号：US17570866

申请日：2022-01-07

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Ime Bassey Obot ,  Ahmad A. Sorour

IPC: C10G75/02 ,  C23F11/16

Abstract: A corrosion inhibiting composition and methods of inhibiting corrosion of a metal surface for use in the oil and gas industry. The corrosion inhibitor includes at least one polyamine, an alkanolamine, at least one surfactant, preferably a linear alkyl alcohol ethoxylate, at least one thioglycol compound, and at least one alcohol solvent. The methods include combining effective amounts of the corrosion inhibitor composition and contacting a metal surface in carbon dioxide-containing aqueous environments commonly found in oil and gas industry. The composition is very effective against corrosion of metals in contact with aqueous sweet corrosive brine media when used in a dosage from 50-100 ppm.

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：US20200339871A1

公开(公告)日：2020-10-29

申请号：US16397593

申请日：2019-04-29

Applicant: King Fahd University of Petroleum and Minerals

Inventor： Ime Bassey Obot ,  Ahmad A. Sorour

IPC: C09K8/74 ,  C09K8/54 ,  E21B41/02 ,  E21B43/25

Abstract: A method of inhibiting corrosion of metal during acid stimulation of an oil and gas well that involves treating the oil and gas well 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 a corrosion inhibitor composition containing gelatin, wherein the gelatin is present in the acidic treatment fluid in a concentration of 0.1 to 10% by weight per total volume of the acidic treatment fluid.