Market Sizing for Subsurface Visualization

We are looking to do a market sizing project associated with the available market for software for subsurface analysis. My organization is a software provider for upstream oil and gas companies. Today we sell software in the $3-$4B software market associated with G&G software. However, our software has applications in adjacent markets that require rich visualization of the subsurface including the mining field, defense and national security being the 2 of interest. I would like to build out a sizing of our core G&G space over the next 3 years with a view on the size and options for growth into some of these adjacent spaces. This material will be made available as part of an investor presentation.