Patent ID: 9488044
Filing Date: 2016-11-08
CPC Classification: E21B,G06N

Claim Text:
1. A method of performing an oilfield operation within an oilfield comprising: a. inputting in a computer system at least two possible options to perform the oilfield operation; b. inputting in the computer system a first variable related to the oilfield; said first variable being able to fall within a first range of values; c. inputting in the computer system a second variable related to the oilfield; said second variable being able to fall within a second range of values; d. generating with the computer system a decision tree comprising an uncertainty node for each one of the at least two possible options to perform the oilfield operation, wherein the uncertainty node is linked to an uncertainty description for at least one of the first or second variable and the uncertainty description comprises a probability density function when the first or the second variable are continuous random variables and the uncertainty description comprise discrete probabilities when the first or the second variable are discrete random variables; e. generating with the computer system a figure of merit for each uncertainty node; f. performing the oilfield operation by selecting one of the at least two possible options based on the value of their respective figure of merit.