Gulong shale oil in the first member of the Qingshankou Formation, Songliao Basin, has considerable exploration potential, yet the evolution of its reservoir remains poorly constrained. Clarifying this evolution is essential for evaluating reservoir properties and identifying prospective intervals. In this study, Gulong shale core samples from the first member of the Qingshankou Formation were collected from multiple wells acr...

The dynamic interaction between water and cylindrical structures can significantly affect the dynamic responses and properties of offshore structures. Among the key factors, the free-surface boundary condition plays a crucial role in determining the hydrodynamic forces on cylinders, leading to frequency-dependent added mass and damping effects. Although the dynamic responses of the cylinder can be readily obtained using freque...