... hydrate media on seismic profile possess low velocity and low amplitude, high frequency characteristics, through comprehensive analyzing and interpreting the seismic and well logging and geological data. According to the dynamic features of the reflections and logging results, anomaly segments of natural...

...-ocean mining. In 1968, a heave compensation system between travelling block and hook used in oil drilling platform was proposed by VETCD Company, USA. It was composed of hydraulic cylinders, accumulator, locking device etc. The hydraulic cylinder displacement is larger than the heave amplitude of wave...

... of the sediment. Properties of the porous host sediment affect the morphology and the extent of hydrate growth, which in turn alters the host sediment properties (Lee, Collett, 2001). strength reservoir characterization methane hydrate amplitude hydrate-bearing sediment apparatus sediment flow...

..., 1989; Chatjigeorgiou, 1998) and lump mass method (Nakajima, 1982; Ghadimi, 1987). metals & mining mining machine walk amplitude deep-ocean mining operation inner fluid displacement space configuration sea current absolute value configuration flexible hose mining machine maximum...

...-accelerometer system prototype model soil sample gimbaled mechanism displacement waveform apparatus displacement acceleration waveform sensor amplitude Seafloor Displacement Monitoring by Double Integral Technique Using Servo-accelerometer System Tatsuya Yokoyama, Hideki Saito, Hiroshi Kameya...

..., buffer and flexible riser) in this simulation. amplitude x-directional force miner external force displacement chung frequency ship case 2 element 57 excitation node 1 z-directional force hydrodynamic force upstream oil & gas axial stress configuration buffer vertical pipe...

... self-propelled vehicle amplitude velocity curve Dynamic Simulation of COMRA's Self-Propelled Vehicle for Deep Ocean Mining System Zhenyu Wang, Shaojun Liu, Li Li, Bihua Yuan, Gang Wang Central South University, Changsha, Hunan, P.R. China ABSTRACT A new parameterized modeling method Adams Tracked...

... to a minimum any interruption to vertical slurry transport or lift (or hoist) flows. cheng isope pipe elastic joint offshore chung buffer thrust vector deflection amplitude vibration axial stress torsional vibration upstream oil & gas stiffness metals & mining biaxial axial...

... ABSTRACT: In order to reduce the amplitude of longitudinal vibration and the axial stress induced in the pipe string for mining manganese nodules from deep sea-floors, various countermeasures, such 8S the utilization of the shape-effect of the buffer equipped at the lower end of the string...

... ABSTRACT: In order to reduce the longitudinal vibration of the pipe string in mining manganese nodules from deepsea bottoms, the investigation of the shape effects of various buffers attached to the string reported that the resonance amplitude of the buffer whose shape caused a larger drag...

... along the pipe and torsional moments. axial stress metals & mining offshore isope deflection axial damper chung pipe system stiffness elastic joint cheng bottom end buffer pipe vibration torsion axial vibration amplitude displacement Proceedillgs of the ISOPE - Oceall...