It is obvious that the reservoir heterogeneity of the second submember of the second member of the Jialingjiang Formation in Tieshan and Leiyinpu structures in east Sichuan differs greatly.The reservoir porosity of the Tieshan structure isn't distributed evenly

reservoir density and stratification coefficient are high

the pores are in zonal distribution

the confining bed of the reservoir is not stable.As for the reservoir of the Leiyinpu structure

the pore layer is in lensing distribution

reservoir density and stratification coefficient are lower than that of Tieshan structure

its confining bed is stable.Pore sections of the both reservoirs are in the upper parts with good lateral connection

the confining beds are gypsodolomits.The meshed heterogenous models of the reservoirs indicate that they match well with the actural reservoirs.