Research Progress on Global Marine Gas Hydrate Resistivity Logging and Electrical Property Experiments

Natural gas hydrate is widely spread in marine environments around the world. It has great energy potential due to its high methane content. High-precision exploration and evaluation of still face challenges as it affected by complex reservoir control mechanisms distribution characteristics. Resistivity used geophysical logging theoretical research on hydrate-bearing reservoirs utilizing sensitivity electrical response. In this paper, based examination global occurrences, resistivity results are summarized. Then key remaining experimental concerns reviewed. summary, properties a reliable means derive characteristics, despite effect induced anisotropic drilling technology. The overall change associated with occurrence pore filling relatively small, specific value sediment lithology saturation. On other hand, fracture have strong anisotropy, massive occurrences (i.e., layers no sediment) section shows very variation. Clay minerals an important factor restricting accurate estimation saturations from situ measurements. Many studies proposed correction Archie empirical formula, but representative models not yet been developed. worth noting that more measurements may be able provide additional response information various systems.