STUDY OF GEOLOGICAL MODEL OF GAS RESERVOIRS IN CHUANXI DEPRESSION OF SICHUAN BASIN

The Chuanxi Depression is located in the eastern slope of Longmen mountain nappe belt, the west of Sichuan Basin.Gas reservoirs were mainly developed in Upper Triassic to Lower Cretaceous clastic sequences.Aanalysis of attributes of seismic reflection, correlated well interpretation, 3D reservoir visualization, constrained sparse spike inversion and stadmod inversion played an important role in reservoir characterization.Application of above technologies gained good result in construction of geological model of gas reservoirs in Chuanxi Depression.