..., the mining machine underwent crucial upgrades for the next phase of trials. These enhancements included the integration of a lightweight nodule collector and structures, lumped nodule crusher, slurry feeder, and pumping system. Slurry transportation was achieved using the nodule entrainment method...

... completion installation and operations nodule well intervention rigid riser slurry riser proceedings mining concentration inertia diameter simulation production enhancement spike requirement downhole intervention efficiency calculation thirty-fourth pipe international ocean...

... ABSTRACT The disturbance of seabed sediments during nodule collection is a pivotal consideration in Environmental Impact Assessments (EIA). Developing methods to quantitatively evaluate the disturbance caused by specific engineering solutions for polymetallic nodule collection in deep-sea...

... ABSTRACT The nodule pick-up device stands as a pivotal component within the operational framework of deep-sea mining systems. It is widely perceived that leveraging water flow for the separation and retrieval of nodules is a promising approach. A series of experiments were conducted...

... ABSTRACT Polymetallic nodules include useful metals such as cobalt, nickel, copper, and manganese, and are expected to be economic deep-sea mineral resources in the future. The Metal Mining Agency of Japan (the Japan Organization for Metals and Energy Security at present) has performed studies...

... upstream oil & gas particle nodule reservoir surveillance production control india government asia government pipe lift height diameter pick-up device production monitoring clearance investigation suction pipe suction tank experimental investigation polymetallic nodule...

... ABSTRACT Box corer (BC) sampling is a well-known method in exploration of deep-sea polymetallic (manganese) nodules. This paper presents the results of monitoring the behavior of BC in a 2018 survey cruise in the Clarion–Clipperton Zone, Central Pacific Ocean. In particular, the sensor data...

... of the Impact Crusher using DEM Approach for Nodule Crushing in Deep Sea Mining Applications Amudha K, Sundaramoorthi V, Gopkumar K, Ramadass G A Deep Sea Technologies, National Institute of Ocean Technology, Chennai, Tamil Nadu, India. ABSTRACT electro-hydraulic; the collected/crushed nodule mixture...

... ABSTRACT Mining of polymetallic nodules from the oceans, found in mineable abundance and mineral quality on the abyssal plain of the oceans at depths of 4000–6000 m, has found renewed interest with the growing demand for cobalt, nickel, copper and REEs. The harvested nodules are conventionally...

... particle material in the vertical pipe. Xia et al. (1997) founded a calculating model to predict and optimize the hydraulic lifting parameters of a manganese nodule mining system. production monitoring hydraulic fracturing production control artificial intelligence concentration reservoir...

... ABSTRACT Nodule pick-up methods used in hydraulic collecting for deep sea mining have significant effects on pick-up efficiency and environmental disturbance. In this paper, three kinds of nodule pick-up methods are investigated and compared in the differences between collecting performance...

... ABSTRACT The authors present preliminary results of shipboard observations of nodule fauna, consisting of deep-sea organisms living on the surface of polymetallic nodules distributed on the abyssal seafloor, from the western part of the Clarion-Clipperton Zone of the Pacific Ocean. Large-size...

... reference data for the pilot test and the commercial realization. The hydrodynamic resistance of skips obtained from single skip test can explore the main composition of water resistance. INTRODUCTION Polymetallic nodules are found on the deep-seabed of oceans worldwide. With the decrease of land...

... are the accurate positioning together with the acquisition of related geological and physicochemical parameters, and in-situ and intact ferromanganese samples for analyses. During the dives we observed wide-spread and mostly continuous cover of hydrogenetic ferromanganese crust deposits (crusts and nodules...

... sediment microscopic scale takuyo-daigo seamount variation nodule deposit metals & mining upstream oil & gas northwestern pacific seamount ferromanganese crust hydrogenetic ferromanganese crust water depth abundance reservoir characterization seamount university...

... ABSTRACT In this study, we have considered the relation between topographic features and the distribution of polymetallic nodules based on their sizes and chemical composition in the Japanese License Area, Clarion-Clipperton Fracture Zone, Central Pacific. It has been observed that small...

... ABSTRACT Article presents the methodology for operational research on the polymetallic nodules mining value chain and the assessment of crucial factors influencing its feasibility. Value chain has been analyzed and boundary assumptions having a substantial influence on the decision making...

... as empirical equations using dimensionless quantities. INTRODUCTION The world's growing economy demands more mineral extracted from the ocean. This demand requires the development of the deep-ocean mining technology. Polymetallic nodules are deposited over the ocean floor at water depth of 4,000~6,000 m...

... Abstract For continuously-taken seafloor photographs of polymetallic nodule, automatic procedures of image processing and subsequent treatment of a vast amount of data have been developed for estimating parameters representing distribution of polymetallic nodules such as sizes, numbers...

... ABSTRACT Experiments have been performed to study the differences of the flow characteristics between real and artificial manganese nodules-water mixture and synthetic nodules-water. The results show that the hydraulic gradients of the mixtures were almost identical in the case of both...