Patent Document ID: 9535187
Application ID: 13225298
Patent Flag: 1

Claim One:
1. A method for characterizing one or more properties of a geological formation, the method comprising: in an electrical control system, inputting at least one first property of the geological formation into an equation of state (EOS) model accounting for a high pressure effect on a reservoir fluid that results in changes in one or more properties of the reservoir fluid as a function of pressure that include deviations from an ideal behavior; wherein the EOS model uses a first equation for the one or more properties, when the pressure is less than a threshold pressure at which the high pressure effect is present; wherein the EOS model uses a second equation different from the first equation for the one or more properties, when the pressure is at least the threshold pressure; in the electrical control system, using the at least one first property to solve the EOS model to determine at least one second property of the geological formation; outputting the at least one second property to a display device.