Gas Hydrates Qualitative Seismic Attributes Mapping in Deep Water Sabah

Methane gas hydrates as unconventional hydrocarbon exploitation has been discussed for more than a decade as energy-dense gas resource. Their abundance in nature means that methane hydrates represent one of the largest known unconventional energy sources, and a much cleaner alternative to crude oil or coal ( You et al., 2020 ). However, exploitation of this resource is highly debated as high drilling risk due to seafloor stability and unstable composition at different pressure. Mechanism of methane hydrates formation in Geological Systems studied by You, et al (2019) has categorize natural gas hydrates occurrences into five types based on their physical and geological environments ( Fig.1 ). Lee, et al (2001) performed quantitative analysis of concentration gas hydrate with well elastic logs has shown reduction of porosity with increase of gas hydrates concentration can be correlates with seismic amplitude response. Surface geochemistry study result in Deep Water Sabah confirmed presence of Methane gas hydrates from soil sample and gas chromograph correspond to amplitude seismic at several prospect locations. Study of their physical occurrence intent to assist on understanding of their presence as drilling hazard and/or as potential hydrocarbon seal.