TY  - DATA
AU  - Ochiai,Koji
ED  - International Gas Union, IGU
ED  - World Gas Conference (22nd. : 2003 jun 1-5 : Tokyo)
ED  - International Gas Union, IGU
TI  - The estimation for the resources of methane hydrate in the Nankai Trough, offshore Japan
U1  - CD I249 1 0013788 
N1  - Disponible en CD en formato PDF
N2  - Transcripción del abstract original del autor: The authors describe the history of exploration for the Methane hydrate in the Nankai Trough, offshore Japan and the latest result of seismic interpretation is introduced. 2D and 3D seismic survey have revealed that BSR recognized in the particular area has many characteristics in the intensity of amplitude and its continuity from area to area. Based on the pattern of appearance in the seismic section, it is proposed that BSR has three types such as Clear, Possible and Masked in the region. The variety is considered to be related to occurrences and distribution of methane hydrate directly, therefore, confirmation of the methane hydrates through drilling of wells to BSR is necessary to delineate the relationship between the types of BSR and occurrences of methane hydrates. It is also important to identify the thickness of methane hydrate bearing zone by analyzing seismic velocity in very detailed scale. The forthcoming project of multi well drilling down to methane hydrate in the Nankai Trough by JNOC will bring valuable geological information to calibrate the said seismic velocity data with velocity of methane hydrate in subsurface. The integration of these data will make it possible to calculate resources in reliable degree, which is essential for the decision of commercial development of methane hydrates in the very near future
ER  -