Palaeochannle Interpretation and Significancein Oil& Gas Expleration

Key words: 
• palaeochannel /
• channel sandstone /
• seismic facies /
• lithologic trap

Abstract: Palaeochannel deposits are a type of special lithosomic body with various forms on seismic profile. I-dentification of the lithosomic body is of difficulty and needs careful observation and detalled analysis.The channel sedimentation is of its own speciality and can form several types of sedimentary sandstoneswhich may be highly productive hydrocarbon reservoirs if they approach source rocks. Channle depositshave been found in many fields in China, and in some of them commercial oil and gas flow of high produc-tion has been discovered by drilling. Therefore, identification of palaeochannel deposition from seismicdata has been an important research subject concerned by many geologists. This paper gave a detaileddiscussion on sedimentary features and seismic facies as well as reflectional characteristics of seismic pro-files of the palaeochannel sedimentation.