GeolOil is a software company providing solutions for oil and gas reservoir modelling, specialized on petrophysics, mapping and 3D geocellular model for the Windows and MAC platforms. GeolOil offers a free tool to open, view .LAS files and compute petrophysical curves, bundled with a special script programming language GLS is distributed for free. Currently the following modules are available: .LAS viewer and plotter, GLS scripting, mapping, map digitization, reservoir screening, volumetrics and 3D corner point geometry gridding. Large sets of digital maps and petrophysical summaries for each reservoir under study can be produced. The premium, user friendly LAS well log reader and viewer allows to plot curves immediately, achieving a top quality display and the easiest to use in the market.