02221ntm a2200349 i 4500 MY-KuUP 20260806180144.0 t|||||r|||| 000 0 ta 260806t20252025my a|||fr|||| 000 0 eng d THE0010920 (Local) Hardback UMPSA eng UMPSA rda FTKKP .H37 2025 r Bc. Muhammad Hasbul Irfaan Bin Hasbullah, author. Enhancing thermal stability and performance of lignosulfonate-based drilling fluids through sulfonation in the presence of phosphorous compounds for high-temperature oil well applications / Muhammad Hasbul Irfaan Bin Hasbullah Kuantan, Pahang : UMPSA, 2025 © 2025 xi, 31 pages : illustrations ; rdacontent text rdamedia unmediated rdacarrier volume rda text file PDF Faculty of Chemical and Process Engineering Technology Final Year Report (Bachelor of Technology Mechanical Engineering (Petroleum) with Hons ) -- Universiti Malaysia Pahang Al-Sultan Abdullah - 2025 Include bibliographical reference This study explains how to create a phosphorus-modified lignosulfonate from sawdust and use it to water-based drilling fluid to enhance performance and thermal stability. To enhance its useful qualities, lignin was chemically altered by sulfonation and phosphorus inclusion after being extracted using the more environmentally friendly organosolv technique. Under HPHT conditions, the produced modified lignosulfonate was assessed for mud cake features, fluid loss, and rheological parameters. Better thermal stability, fluid loss management, and mud cake integrity were demonstrated by the results, which also highlighted the potential of phosphorus-modified lignosulfonate as an effective, practical, and sustainable addition for use in HPHT drilling operations. Faculty of Chemical and Process Engineering Technology Dissertations Universities and colleges Dissertations Theses Dissertations https://umpir.ump.edu.my/id/eprint/48082 lcc PSM 0 0 lcc 0 0 10000 10000 2026-08-06 0 FTKKP .H37 2025 r Bc. T000004429 2026-08-06 18:02:06 2026-08-06 PSM 105416 105422