Coalbed methane prediction in Huhehu Depression, Hailar Basin

Huhehu Depression in Hailar Basin is characterized by thick coal seams at moderate depth, which shows good conditions for coalbed methane reservoir forming. However, coal seam characteristics on seismic sections are not clear. In this paper we propose approaches to predict coal seams and coalbed methane distribution on seismic data. First we analyze petrophysical characteristics of coal seams and coalbed methane, and then we apply impedance inversion to predict coal seam thickness. We also analyze AVO characteristics of coal seams in this area and predict coalbed methane distribution by AVO inversion. Hopefully these approaches will provide necessary preparations for coalbed methane exploration in Huhehu Depression, Hailar Basin.