Hydrocarboxylic acid derivative as a retarder additive for oil and gas wells cementing

US11970423B2 · kind B2 · utility

Assignee

• SAUDI ARABIAN OIL COMPANY · SA

Inventors

• Sara A. Alkhalaf · Al Khobar, SA
• Abdullah Al-Yami · Dhahran, SA
• Vikrant Wagle · Dhahran, SA
• Ali Mohammed Hussain Al Safran · Dhahran, SA

Key dates

• Filing date: Dec 7, 2021
• Grant date: Apr 30, 2024
• Expiry date: Dec 7, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2103/22
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Cement compositions of the present disclosure include a cement precursor, water, and a cement retarder that includes hydrocarboxylic acid derivatives. In particular, the cement compositions include from 10 wt. % to 70 wt. % cement precursor, from 5 wt. % to 70 wt. % water, and from 0.1 percent by weight of cement (BWOC) to 10 percent BWOC cement retarder comprising the hydrocarboxylic acid derivatives. The hydrocarboxylic acid derivatives provide increased thickening time to the cement compositions at downhole temperatures of greater than or equal to 50° C. The present disclosure further includes methods of cementing a wellbore using the cement compositions with the cement retarder comprising the hydrocarboxylic acid derivatives.