TECHICAL Series MATHEMATICS • INFORMATICS • PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
Fluid Flow Analysis of Hydraulic Coring System for Offshore Gas Hydrate Research
(Calculul hidraulic al carotierei pentru prospectarea hidraţilor de metan)
Vol LXVIII • No. 2/2016
Alexandru Pupăzescu
Petroleum-Gas University of Ploiesti, Bd. București 39, Ploieşti
e-mail: pal@upg-ploieşti.ro

 Keywords   coring system, flow, FEM, gas hydrate

 Abstract
Evaluation of gas hydrate deposits has imposed a large number of explorations. This has involved the design of new drilling and logging tools. In this paper are presented the results of the analysis of the fluid flow in the coring HRC used for logging works for offshore gas hydrate. The analysis showed the correlation between pressure losses in the flow system with pressure loss on the hydraulic motor. Has been carried out and a numerical analysis with bay-pas FLOTRAN area. The results confirmed the analytical method of the analysis of the fluid flow.

 Rezumat
Evaluarea căderilor de presiune in carotiere este o problemă importantă în procesul de foraj de prospecţiune. Modelul analitic propus pentru carotiera HRC, validat de analiza numerică efectuată pentru zona baipasului, poate fi aplicat şi pentru alte geometrii de curgere. Pe baza rezultatelor se poate corela debitul motorului hidraulic cu căderea de presiune astfel încât să se asigure o funcţionare optimă a sistemului de carotare.



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