Trabajo presentado en el 24 WGC. Disponible en CD en la biblioteca. Solicite este trabajo por email a biblio@iapg.org.ar

Gas hydrate is anticipated worldwide as a major future energy resource, due to its extensive deposits and environmentally friendly trait. Many countries such as U.S. and Japan have been conducting geophysical surveys and drillings through national science programs in order to investigate the distribution and resource quantities. In the case of South Korea, seismic surveys and drilling have been carried out from 2005 to 2007 in the Korean offshore to identify gas hydrate resources. This study classifies various gas hydrate bearing zones using information acquired through analysis of LWD (Logging While Drilling) data obtained from the Ulleung Basin Area. Results from analyzing the acoustic velocity and resistivity log data show that gas hydrate bearing zone clearly exists. Porosity value have been computed using the data from density log and sonic log and using the Archie’s Equation, gas hydrate saturation has been computed. Deducted saturations from two target areas, UBGH-09 and UBGH-10, are found to be 11.6% and 59.7% of the pore volumes respectively