Lignin graft copolymer as a drilling mud thinner for high temperature well

Mohamad Ibrahim, M.N. and Nur Azreena, I. and Nor Nadiah, M.Y. and Mohd Saaid, I. (2006) Lignin graft copolymer as a drilling mud thinner for high temperature well. Journal of Applied Sciences, 6 (8). pp. 1808-1813. ISSN 18125654

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Abstract

A study was conducted on graft copolymerization of Kraft lignin with 2-propenamide (acrylamide). The copolymerization process was carried out via a free radical reaction using methanol as the reaction medium, ferrous ion as the catalyst and benzoyl peroxide as the initiator. The formulation of lignin-acrylamide graft copolymer (PLA) was verified by infrared (IR) spectroscopy and Differential Scanning Calorimetry (DSC) analyses. Thermogram observations showed that there were two Tg, values indicating that the yield was a copolymer. Then, the performance of the PLA as a polymeric thinning agent for aqueous bentonite mud was evaluated. The rheological performances of the copolymer were compared with that of a commercial thinner (lignosulfonate). At the optimum dosage of 0.3 of total mud volume, the PLA acted more effectively as a thinner and also as an agent for controlling filtration loss than did the lignosulfonate. Unlike the commercial lignosulfonate, the newly formulated thinner (PLA) showed better thinning performance at a high temperature of 190°C. Furthermore, the PLA was more tolerant than lignosulfonate towards salt contamination. © 2006 Asian Network for Scientific Information.

Item Type: Article
Additional Information: cited By 23
Uncontrolled Keywords: Copolymerization process; Graft co polymerizations; High temperature; High temperature well; Kraft lignin; Reaction medium; Rheological performances; Salt contamination, Amides; Differential scanning calorimetry; Free radical reactions; Graft copolymers; Grafting (chemical); Oil well drilling, Lignin
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 09 Nov 2023 15:15
Last Modified: 09 Nov 2023 15:15
URI: https://khub.utp.edu.my/scholars/id/eprint/103

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