Abstract:

Underground water solution is the medium of deep oil gas information.The occurrence of pressure difference and temperature difference is the dynamics for the transission of deep seated information.The analyses made in hydrocarbon geochemics and water content show that remote sensing information of the alteration halo of oil gas microseepage could be considered as the comprehensive reflector of both organic and inorganic components.It is common that water content in alteration halo is considerably higher than background value.Structures of oil and gas passages are mainly closed extensional structures which appear to be light colour zones with low water content in remote sensing images;oil gas bearing structures sealed by compressional or transpressional structures and clay beds appeared to be dark zones with high content of water in the images.It is suggested that to extract oil gas information,one should choose suitable humidity and also consider mteorologic factor.