Prediction of in-situ fluid pH in high-acidity environments Cong Shen, Jing Yan, Ganghua Huang, Hongbing Huang, Bo Xie, Puzhi Li and Changhui Zhang E3S Web Conf., 561 (2024) 03008 Published online: 09 August 2024 DOI: 10.1051/e3sconf/202456103008