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Journal of Applied Sciences
  Year: 2006 | Volume: 6 | Issue: 8 | Page No.: 1808-1813
DOI: 10.3923/jas.2006.1808.1813
Lignin Graft Copolymer as a Drilling Mud Thinner for High Temperature Well
M.N. Mohamad Ibrahim, I. Nur Azreena, M.Y. Nor Nadiah and I. Mohd Saaid

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.
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How to cite this article:

M.N. Mohamad Ibrahim, I. Nur Azreena, M.Y. Nor Nadiah and I. Mohd Saaid, 2006. Lignin Graft Copolymer as a Drilling Mud Thinner for High Temperature Well. Journal of Applied Sciences, 6: 1808-1813.

DOI: 10.3923/jas.2006.1808.1813

URL: http://scialert.net/abstract/?doi=jas.2006.1808.1813

 
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