Zobrazeno 1 - 10
of 118
pro vyhledávání: '"ICGH 2008"'
Gas hydrates occur naturally around the world in the shallow-marine geosphere, and have received diverse attention, crossing many disciplines, ranging from interest as a drilling hazard in the petroleum industry through to their role in the carbon cy
Externí odkaz:
http://hdl.handle.net/2429/2822
Autor:
Hachikubo, Akihiro, Sakagami, Hirotoshi, Minami, Hirotsugu, Nunokawa, Yutaka, Yamashita, Satoshi, Takahashi, Nobuo, Shoji, Hitoshi, Kida, Masato, Krylov, Alexey, Khlystov, Oleg, Zemskaya, Tamara, Manakov, Andrey, Kalmychkov, Gennadiy, Poort, Jeffrey
Structure I and II gas hydrates were observed in the same sediment cores of a mud volcano in the Kukuy Canyon, Lake Baikal. The sII gas hydrate contained about 13-15% of ethane, whereas the sI gas hydrate contained about 1-5% of ethane and placed ben
Externí odkaz:
http://hdl.handle.net/2429/2692
Autor:
Miyazaki, Kuniyuki, Masui, Akira, Haneda, Hironori, Ogata, Yuji, Aoki, Kazuo, Yamaguchi, Tsutomu
In order to evaluate a methane gas productivity of methane hydrate reservoirs, it is necessary to develop a numeric simulator predicting gas production behavior. For precise assessment of long-term gas productivity, it is important to develop a mathe
Externí odkaz:
http://hdl.handle.net/2429/2474
Autor:
Solomon, Evan A., Spivack, Arthur J., Kastner, Miriam, Torres, Marta, Borole, D.V., Robertson, Gretchen, Das, Hamendra C.
Natural gas hydrates occur on most continental margins in organic-rich sediments at water depths >450 m (in polar regions >150 m). Gas hydrate distribution and abundance, however, varies significantly from margin to margin and with tectonic environme
Externí odkaz:
http://hdl.handle.net/2429/2713
Autor:
Kastner, Miriam, Spivack, Arthur J., Torres, Marta, Solomon, Evan A., Borole, D.V., Robertson, Gretchen, Das, Hamendra C.
To establish the structural and lithological controls on gas hydrate distribution and to assess the potential energy resource and environmental hazards in the Indian Ocean, non-pressurized and pressurized cores were recovered from the Krishna-Godavar
Externí odkaz:
http://hdl.handle.net/2429/2712
Dissociation and specific heats of synthetic methane and ethane hydrates were measured under high-pressure condition by using a heat-flow type calorimeter to understand thermodynamic properties of gas hydrates under submarine/sublacustrine environmen
Externí odkaz:
http://hdl.handle.net/2429/2695
Autor:
Hachikubo, Akihiro, Nakagawa, Ryo, Kubota, Daisuke, Sakagami, Hirotoshi, Takahashi, Nobuo, Shoji, Hitoshi
Enormous amount of latent heat generates/absorbs at the formation/dissociation process of gas hydrates and controlls their thermal condition themselves. In this paper we investigated the effect of ethane concentration on dissociation heat of mixed-ga
Externí odkaz:
http://hdl.handle.net/2429/2694
Autor:
Hachikubo, Akihiro, Ozeki, Takahiro, Kosaka, Tomoko, Sakagami, Hirotoshi, Minami, Hirotsugu, Nunokawa, Yutaka, Takahashi, Nobuo, Shoji, Hitoshi, Kida, Masato, Krylov, Alexey
Stable isotope of natural gas hydrates provides useful information of their gas sources. We investigated the isotopic fractionation of gas molecules during the formation of synthetic gas hydrates composed of methane and ethane. The gas hydrate sample
Externí odkaz:
http://hdl.handle.net/2429/2693
Active marine electromagnetic methods have proven to be a powerful tool to detect resistivity anomalies associated with gas hydrate. However, because the propagation of electromagnetic fields for these methods works in the diffusive regime the spatia
Externí odkaz:
http://hdl.handle.net/2429/2472
Gas hydrates in near-mudline subsea sediments present significant challenges in the production of underlying hydrocarbons, impacting wellbore integrity and placement of subsea equipment. As the fluids of an underlying reservoir flow to the mudline, h
Externí odkaz:
http://hdl.handle.net/2429/2327