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Accelerated cement compositions and methods for top-job cementing of a wellbore to reduce corrosion
A method of reducing corrosion in tubular strings installed in wellbores includes dispensing an accelerated cement composition into a wellbore annulus, a casing-casing annulus, or both, the accelerated cement composition comprising a cement composition and an accelerant composition, where: the cement composition comprises a cement precursor and water; the accelerant composition comprises triethanolamine; and a concentration of the triethanolamine in the accelerated cement composition is greater than or equal to 10,000 parts per million by weight; allowing the accelerated cement composition to cure in the annulus to form a cured cement, where the triethanolamine reacts with a metal of the tubular string, the reaction forming a protective layer on the surfaces of the tubular string that inhibits dissolution of iron from the metal of the tubular string.
Accelerated cement compositions and methods for top-job cementing of a wellbore to reduce corrosion
A method of reducing corrosion in tubular strings installed in wellbores includes dispensing an accelerated cement composition into a wellbore annulus, a casing-casing annulus, or both, the accelerated cement composition comprising a cement composition and an accelerant composition, where: the cement composition comprises a cement precursor and water; the accelerant composition comprises triethanolamine; and a concentration of the triethanolamine in the accelerated cement composition is greater than or equal to 10,000 parts per million by weight; allowing the accelerated cement composition to cure in the annulus to form a cured cement, where the triethanolamine reacts with a metal of the tubular string, the reaction forming a protective layer on the surfaces of the tubular string that inhibits dissolution of iron from the metal of the tubular string.
Accelerated cement compositions and methods for top-job cementing of a wellbore to reduce corrosion
ALKHALAF SARA A (author) / AL-YAMI ABDULLAH S (author) / WAGLE VIKRANT (author) / AL-HARTHI MOHAMMAD ABDULLAH (author)
2022-11-01
Patent
Electronic Resource
English
ACCELERATED CEMENT COMPOSITIONS AND METHODS FOR TOP-JOB CEMENTING OF A WELLBORE TO REDUCE CORROSION
| European Patent Office | 2022
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