TY - JOUR ID - 216728 TI - Synthesis and Evaluation of Poly (isobutylene-alt-maleic anhydride)-co-Poly (ethylene glycol) and its Copper Oxide Nanocomposite for Enhancing the Performance of Water-based Drilling Fluids in HPHT Wells JO - Egyptian Journal of Chemistry JA - EJCHEM LA - en SN - 0449-2285 AU - Abdelhak, Ahmed AU - Ghanem, Ahmed Fathy AU - Abdulaziz, Abdulaziz AU - kabel, khalid AU - Noah, Ahmed Zakariya AU - Youssef, Ahmed AU - Dahab, Abdel Sattar AD - Drilling Fluids, Halliburton, El Katameya, Cairo, Egypt AD - Packaging Materials Department, National Research Centre, 33 El Behooth St., Dokki, Giza, Egypt AD - Department of Mining, Petroleum and Metallurgical Engineering, Faculty of Engineering, Cairo University, Egypt AD - petroleum applications department, egyptian petroleum research institute AD - Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt AD - Packaging Materials, National Research Centre, Cairo, Egypt Y1 - 2022 PY - 2022 VL - 65 IS - 9 SP - 349 EP - 360 KW - Copolymerization KW - Nanocomposites KW - Water-based muds KW - HPHT wells DO - 10.21608/ejchem.2022.111764.5075 N2 - Enormous research work has been performed in order to retain the desired rheological, filtration, and friction properties of water-based drilling fluids at elevated temperature and pressure. In the current work, polyester copolymer (PES) was synthesized by esterification of poly isobutylene maleic anhydride (PIBMA) with poly ethylene glycol (PEG). Copper oxide nanoparticles (CuO NPs) were added during the copolymerization in different ratios, 0.5, 1, and 2 Wt. %, so that new nanocomposites were obtained. The prepared PES and its nanocomposites were characterized by nuclear magnetic resonance (NMR), X-ray diffraction (XRD), transmission electron microscope (TEM), fourier infrared spectroscopy (FTIR), and thermal gravimetric analysis (TGA). Moreover, case studies were conducted through analyzing the samples composed of water-based muds (WBM), developed with the copolymer and its CuO nanocomposites, compared with the blank ones. The results showed great enhancement in rheological, filtration, and friction properties of WBM developed by 3.5 ppb of PES copolymer (PIBMA-PEG) that can withstand high temperature beyond〖 400〗^⁰ F. On the other hand, the prepared nanocomposites showed an adverse effect on mud rheology at temperature greater than 300⁰F. The results appear a promising development in copolymerization and nanotechnology that plays a vital role to enhance drilling fluids performance at high temperature environment and minimize drilling cost together with the non-productive time (NPT). Considering that the best result is approached by adding 7 ppb PES to NaCl polymer mud that sustain rheological properties especially yield point (YP = 23 Ib/100 〖ft〗^2) accompanied by controlling both filtrate volume and induced friction. UR - https://ejchem.journals.ekb.eg/article_216728.html L1 - https://ejchem.journals.ekb.eg/article_216728_13bbf6b27b82d16c7aab9f455b6cb286.pdf ER -