A New Method for Predicting the Permeability of Sandstone in Deep Reservoirs
Feisheng Feng,
Pan Wang,
Zhen Wei,
Guanghui Jiang,
Dongjing Xu,
Jiqiang Zhang,
Jing Zhang
Affiliations
Feisheng Feng
Anhui University of Science and Technology, State Key Laboratory of Deep Coal Mine Mining Response and Disaster Prevention and Control, Huainan 232001, China
Pan Wang
State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013 Jiangxi, China
Zhen Wei
Anhui University of Science and Technology, State Key Laboratory of Deep Coal Mine Mining Response and Disaster Prevention and Control, Huainan 232001, China
Guanghui Jiang
School of Civil Engineering, Ludong University, Yantai 264025, China
Dongjing Xu
Shandong University of Science and Technology, Qingdao, China
Jiqiang Zhang
Anhui University of Science and Technology, State Key Laboratory of Deep Coal Mine Mining Response and Disaster Prevention and Control, Huainan 232001, China
Jing Zhang
Anhui University of Science and Technology, State Key Laboratory of Deep Coal Mine Mining Response and Disaster Prevention and Control, Huainan 232001, China
Capillary pressure curve data measured through the mercury injection method can accurately reflect the pore throat characteristics of reservoir rock; in this study, a new methodology is proposed to solve the aforementioned problem by virtue of the support vector regression tool and two improved models according to Swanson and capillary parachor parameters. Based on previous research data on the mercury injection capillary pressure (MICP) for two groups of core plugs excised, several permeability prediction models, including Swanson, improved Swanson, capillary parachor, improved capillary parachor, and support vector regression (SVR) models, are established to estimate the permeability. The results show that the SVR models are applicable in both high and relatively low porosity-permeability sandstone reservoirs; it can provide a higher degree of precision, and it is recognized as a helpful tool aimed at estimating the permeability in sandstone formations, particularly in situations where it is crucial to obtain a precise estimation value.
