GeoGrid3D: a program to insert faults in 3D geological model for fluid simulation

Abstract

This paper has reported the use of geological and geophysical data into a 3D flow simulation model (gas). To adopt freeware software in flow simulation, we produced a program called GeoGrid3D. Our program is available with fault insertion features into ASCII 3D models. Also, it has other codification functions that change data for boast recognition (boast is the flow simulation freeware issued by the United States Department of Energy). We have developed the 3D reservoir grid and the structural framework model with data from outcrops of Permian sedimentary rocks and shallow seismic reflection. Analysis of geological facies in outcrops and their correlation with the stratigraphy are the methods used in 3D grid geological modeling and petrophysical properties. To demonstrate GeoGrid3D functions, we elaborated a main petrophysical model with supplementary three hypothetical tectonic faults playing. The gas saturation, after flow simulation, confirms that changing faults permeability inside the reservoir will change gas production in this model.