The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 12, 2022
Filed:
Mar. 13, 2015
Instituto Mexicano Del Petróleo, Mexico City, MX;
Mirna Pons Jiménez, Mexico City, MX;
Raúl Hernández Altamirano, Mexico City, MX;
José Manuel Martínez Magadan, Mexico City, MX;
Alejandro Ramirez Estrada, Mexico City, MX;
Luis Silvestre Zamudio Rivera, Mexico City, MX;
INSTITUTO MEXICANO DEL PETROLEO, Mexico City, MX;
Abstract
The present invention is related to the process of obtaining random terpolymers based on itaconic acid or its isomers, aconitic acid or their isomers and sodium alkenyl sulphonates, through a polymerization in aqueous solution, via free radicals at acid pH in the range of 1.0 to 3.5 and as initiator a redox system. The random terpolymers are characterized for being tolerant to high concentrations of divalent ions, such as calcium, magnesium, strontium and barium. Their use as inhibitors of mineral scale such as calcium carbonate, calcium sulphate, strontium and barium, and clay dispersing, iron oxides, carbonate and calcium sulfate allows for their application in the reservoir or production rig, treated water, sea water and/or connate water can be used as means of transportation. The terpolymer can be used to inhibit and disperse mineral scales present in cooling system and boiler employed in the chemical and oil industry, and is compliant with environmental standards established internationally. They are classified as non-toxic, and can be used in pipes and equipment in the petrochemical industry and transporting freshwater and seawater from offshore and onshore facilities.