Study of Gas Hydrate Stability
Presented by Mr. SUNJAY SUNJAY on 23 Sep 2013 from 17:15 to 19:15
Type: Poster presentation
Session: Poster session
Track: Poster presentations
Methane hydrate (white gold) is a crystal fuel which releases 164 unit volume of methane gas from one unit volume of gashydrate.Hydrate dissociation could be critical in inciting slope failures for low permeability sediments in shallower water depths. Since gas hydrates are located on the continental slope and – if present in sufficient amounts – may increase sediment strength, their dissociation possibly influences slope stability. The boundary of the gas hydrate stability zone (GHSZ) can be affected by hydrostatic pore pressure changes due to a sea-level decrease, tectonic uplift, rapid sedimentation or erosion, or changes in sea bottom temperatures. Gas hydrates are linked to large submarine slides, in part because hydrate dissociation results in loss of solid material, production of free gas, and increased fluid pressures; all which have the effect of reducing sediment strength. Gas hydrates and submarine slope stability, exploring the role of gas hydrates in triggering and/or propagating submarine mass movements is pertinent task before geoscientist . Biochemical study reveals the impact on the stability, structure, and gas composition of the gas hydrate .In fact, methanogenesis is indirectly involved in the formation of a highly abundant form of gas hydrates on earth- biogenic methane hydrate. Biochemical reaction and diffusion in seafloor gas hydrate capillaries affects gas hydrate stability. Biochemical reactions occurring within gas hydrate accumulations provide a driving force for diffusion of organic and inorganic components into and out of gas hydrate interior. Study of GHSZ show transport phenomenon can affect gas hydrate stability in multiple ways, depending on the biochemical reactions occurring. Seismic imaging by wavelet transform provides precise causes of slope stability. Gas Authority of India Limited research & development projects on "Slope instability due to gas hydrate dissociation in continental margins of India". The Methane Hydrate monitoring station consists of three types of observing systems: Geochemical, Microbial And Seismo-Acoustic. CeNSE :Central Nervous System for the Earth can be used for our purpose.