A5053391096- Advanced Surface Polishing Techniques
- Hydrocarbon exploration and reservoir analysis
- Geochemistry and Geologic Mapping
- Advanced Machining and Optimization Techniques
- Advanced machining processes and optimization
- Geological Studies and Exploration
Dalian Jiaotong University
2021
China National Petroleum Corporation (China)
2021
The Lower Silurian Longmaxi Formation in the southern Sichuan Basin is composed of a series dark carbonaceous shales deposited hydrostatic shelf reduction environment. In this study, ratio uranium to thorium (U/Th), total organic carbon (TOC), and biological silicon content (SiBio) were selected as characteristic parameters precisely analyze sedimentary environment its impact on reservoir quality. results show that Weiyuan area Early period experienced two transgression-regression cycles,...
During the cutting process of hollow thin-walled aluminum alloy components, dynamic characteristics workpiece change due to removal materials. In order solve time-varying modal parameters quickly and accurately, a parameter prediction method based on perturbation principle is proposed. Firstly, vibration initial state analyzed by finite element method, frequency, stiffness matrix mass are extracted. Then natural frequency after material calculated results compared with method. The show that...