Characterization of Thin Gas Hydrate Reservoir in Ulleung Basin with Stepwise Seismic Inversion

Natural gas hydrates (GHs) filling sand layer pores are the most promising GHs that can be produced via conventional mechanisms in deep-sea environments. However, seismic tracking of such thin GH-bearing layers is subject to certain limitations. For example, because and sparsely interbedded with mud layers, data a maximum resolution ~10 m limited use for describing their spatial distribution. The 2010 Ulleung Basin drilling expedition identified relatively good GH reservoir at UBGH2-6 site. individual this site cannot therefore reliably tracked using techniques. This study presents new method stepwise inversion 3D datasets two different resolutions. high-resolution acoustic impedance volume obtained then used trace harnessed methods. Moreover, we estimate regional distribution based on saturation derived from UBGH2-6. previously viewed as single resolution, further subdivided, traced, characterized terms lateral variation.