GREAT® software provides easy-to-use, full-featured reservoir engineering tools without the complexity or expense of other reservoir simulators.


  • Gas reservoir simulator for single-phase flow in spatially variable properties on a fixed grid
  • Efficient well recurrent data input
  • View well rates and pressure output
  • Easy to use framework
  • Fully implicit formulation
  • Fluid property calculation, flash calculation, decline curves, isochronal testing,
    gas pressure transient analysis, p/z analysis, volumetric calculation, and z-factor calculation
Contact Us

The SiteLark team is devoted to making our products and service a valuable component of your business success. Contact us for access to product samples, white papers, and to learn more about our products and services.

SiteLark Headquaters

2121 W Spring Creek Pkwy # 106
Plano, TX 75023

Telephone: 469-222-5436