Analysis of Multi-Phase Mixed Slurry Horizontal Section Migration Efficiency in Natural Gas Hydrate Drilling and Production Method Based on Double-Layer Continuous Pipe and Double Gradient Drilling - Tang, Yang; Yao, Jiaxin; Wang, Guorong; He, Yin; Sun, Peng (Energies (Basel), 2020)
Keywords: double-layer continuous-pipe double-gradient drilling; Drilling; Efficiency; Flow velocity; Fluids; migration efficiency; Natural gas; natural gas hydrate; Pipes; pressure regulation; Seawater; Sediments; solid-state fluidized mining