Abstract: The present study deals with experimental mathematical equations that link density and porosity withdepth. After obtaining density and porosity information from three well logs scattered in the East Baghdad oil field,new empirical polynomial equations (porosity-depth, density-depth) were produced for all the geological formationsbetween the Fatha and Hartha formations. The coefficient of determination (R2) of the equations derived for eachformation ranged from 0.11 to 0.93, which was attributed to variable lithological and compaction effects. The depthinformation of (131) velocity analyses situated on the seismic lines grid covering the field was used for applying thenew equations. After the new empirical polynomial equations were applied to the whole field, porosity and densitycontour maps for the Fatha-Hartha interval were produced. The location of high porosity zones was identified andrelated to the compaction and petroleum distribution in the field.