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Provedor de dados:  ArchiMer
País:  France
Título:  A Long Gravity-Piston Corer Developed for Seafloor Gas Hydrate Coring Utilizing an In Situ Pressure-Retained Method
Autores:  Chen, Jia-wang
Fan, Wei
Bingham, Brian
Chen, Ying
Gu, Lin-yi
Li, Shi-lun
Data:  2013-07
Ano:  2013
Palavras-chave:  Gas hydrate corer
In situ pressure-retained corer
Mechanism of coring
Long coring
Key pressure-retained structure
Resumo:  A corer, which can obtain long in situ pressure-retained sediments of up to 30 m core containing gas hydrates, has been applied in the South China Sea (SCS) dozens of times. The corer presented in this paper is a convenient, efficient and economical long in situ pressure-retained coring and research tool for submarine sediments, that can applied to completely cope with all sediments close to the seafloor ranging from shallow waters to the deep sea depths of 6000 m. This article mainly presents the overall structure, working principles, key pressure-retained components, coring mechanism, sea trials and outlook of the corer. The analyses found that the coring ability was affected by formation characteristics, the outer diameter of the core barrels and inner diameter of the core liners, the shapes of the cutter and the dead weight of the corer. This study can provide the practical basis for the structural optimization of this type of corer and designs for corers with greater penetrability. Sea trials showed that the developed corer presented in this paper can support the in situ pressure of the seafloor sediment core, which is an improvement over the conventional piston corer.
Tipo:  Text
Idioma:  Inglês

Editor:  Mdpi Ag
Formato:  application/pdf
Fonte:  Energies (1996-1073) (Mdpi Ag), 2013-07 , Vol. 6 , N. 7 , P. 3353-3372
Direitos:  2013 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (


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