Hydrocarbon detection in biogas exploration in Sanhu shallow

Hydrocarbon detection based on the theory of dual phase medium uses energy accumulation of sensitive frequency part or specific frequency (dynamic information) to study strata attributes and hydrocarbon bearing. In biogas areas of Quaternary formation of Sanhu, some phenomena such as "gas-bearing pulling-down", and "low frequency resonant, high frequency attenuated" exist in seismic sections. In this paper we analyze frequency distribution characteristics. Based on the maximum energy accumulation method (CM) and optimizing the parameters of hydrocarbon enrichment degree, the planar distribution of the biogas advantageous area is predicted. To obtain reliable results, seismic structural interpretation should be conducted with post-stack seismic attributes and gas testing data.