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Degasification

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Junwen Li – One of the best experts on this subject based on the ideXlab platform.

  • application of ultrasonic treating to degassing of metal ingots
    Materials Letters, 2008
    Co-Authors: Junwen Li, Tadashi Momono, Yoshinori Tayu, Ying Fu
    Abstract:

    Abstract The relations between porosity in the ingot and the effecting factors such as the ultrasonic power and the time of ultrasonic vibration (UV) treating to melt were investigated. Moreover, the mechanism of the porosity formation and the prevention method was studied. The results indicate that the effect of Degasification was better when the intensity of UV is above threshold value. On the contrary, the intensity of UV below the value resulted in the increase of the gas content in the ingot and the decrease of density. It could be confirmed that there is an appropriate time on Degasification by UV treating. When treating time is over the time, the density of the ingot tended to decrease. By using UV to degas with constraint cooling in the bottom of the ingot, the value of porosity volume (PV) can be decreased below 0.1 cm3/100 g and the ηdeg is near to 97%.

Hero J Heeres – One of the best experts on this subject based on the ideXlab platform.

Ying Fu – One of the best experts on this subject based on the ideXlab platform.

  • application of ultrasonic treating to degassing of metal ingots
    Materials Letters, 2008
    Co-Authors: Junwen Li, Tadashi Momono, Yoshinori Tayu, Ying Fu
    Abstract:

    Abstract The relations between porosity in the ingot and the effecting factors such as the ultrasonic power and the time of ultrasonic vibration (UV) treating to melt were investigated. Moreover, the mechanism of the porosity formation and the prevention method was studied. The results indicate that the effect of Degasification was better when the intensity of UV is above threshold value. On the contrary, the intensity of UV below the value resulted in the increase of the gas content in the ingot and the decrease of density. It could be confirmed that there is an appropriate time on Degasification by UV treating. When treating time is over the time, the density of the ingot tended to decrease. By using UV to degas with constraint cooling in the bottom of the ingot, the value of porosity volume (PV) can be decreased below 0.1 cm3/100 g and the ηdeg is near to 97%.

Satoshi Okabe – One of the best experts on this subject based on the ideXlab platform.

Caiping Yuan – One of the best experts on this subject based on the ideXlab platform.

  • Resource potential of water-soluble gas in the Palaeogene Huizhou Sag, Pearl River Mouth Basin
    Petroleum Exploration and Development, 2012
    Co-Authors: Xu Si-huang, Caiping Yuan
    Abstract:

    Abstract Based on the formation mechanism of water-soluble gas, combined with the geological conditions of the Palaeogene Huizhou Sag, the resource potential and utilization of water-soluble gas in the Palaeogene source rock in the Huizhou Sag are analyzed quantitatively using grid calculation method. The Palaeogene Wenchang and Enping formations of the Huizhou Sag are major source rocks that generate significant quantities of gas and the sandstone reservoirs are weakly overpressured to overpressured on the whole. Calculated according to the thickness, sandstone content, porosity, water saturation, strata pressure, temperature, and mineralization of the Wenchang and Enping Formations, the resource volume of water-soluble gas is about 1 791.49×10 8 m 3 and 2 688.5×10 8 m 3 , 1.19 and 3.46 times that of the conventional gas, respectively. If the strata pressure is relieved to normal pressure, the Degasification volume is 80.84×10 8 m 3 and 97.04×10 8 m 3 . The water-soluble gas is an unconventional resource with great potential, and can provide substantial gas source for conventional pools through Degasification.

  • Resource potential of water-soluble gas in the Palaeogene Huizhou Sag, Pearl River Mouth Basin
    KeAi Communications Co. Ltd., 2012
    Co-Authors: Caiping Yuan
    Abstract:

    Based on the formation mechanism of water-soluble gas, combined with the geological conditions of the Palaeogene Huizhou Sag, the resource potential and utilization of water-soluble gas in the Palaeogene source rock in the Huizhou Sag are analyzed quantitatively using grid calculation method. The Palaeogene Wenchang and Enping formations of the Huizhou Sag are major source rocks that generate significant quantities of gas and the sandstone reservoirs are weakly overpressured to overpressured on the whole. Calculated according to the thickness, sandstone content, porosity, water saturation, strata pressure, temperature, and mineralization of the Wenchang and Enping Formations, the resource volume of water-soluble gas is about 1 791.49×108 m3 and 2 688.5×108 m3, 1.19 and 3.46 times that of the conventional gas, respectively. If the strata pressure is relieved to normal pressure, the Degasification volume is 80.84×108 m3 and 97.04×108 m3. The water-soluble gas is an unconventional resource with great potential, and can provide substantial gas source for conventional pools through Degasification. Key words: water-soluble gas, unconventional resources, Degasification, resource potential, Palaeogene, Huizhou Sa