Determination of downhole formation fluid contamination and certain component concentrations

A system for determining nonnative a fluid contamination of a formation fluid, the system comprising:

• one or more sensors to be positioned in a wellbore formed in a subsurface formation and configured to obtain measurements at a plurality of times;
• memory storing program code;
• and
• one or more processors configured to execute the program code, the program code comprising:
• instructions to obtain, via the one or more sensors, real-time measurements of a concentration of an interactive component and a concentration of a non-interactive component in a first fluid comprising at least the formation fluid from the subsurface formation, wherein the non-interactive component and the interactive component comprise a component in the formation fluid that is chemically non-interactive and chemically interactive, respectively, with respect to, at least in part, at least one component of a second fluid that is non-native to the subsurface formation;
• instructions to determine at least one of a level of contamination from the second fluid that contaminates the formation fluid at a time of interest based, at least in part, on the concentration of the non-interactive component in the formation fluid and the concentration of the interactive component in the formation fluid, wherein the time of interest is a time after a release of a free form of the interactive component begins in the wellbore;
• and
• instructions to alter an operation in the wellbore based, at least in part, on the level of contamination from the second fluid.

One or more non-transitory machine-readable media comprising program code configured to determine a contamination of a formation fluid, the program code executable on one or more processors, the program code comprising:

• instructions to receive, via one or more sensors to be positioned in a wellbore formed in a subsurface formation, real-time measurements of a concentration of an interactive component and a concentration of a non-interactive component in a first fluid comprising at least the formation fluid from the subsurface formation, wherein the non-interactive component and the interactive component comprise a component in the formation fluid that is chemically non-interactive and chemically interactive, respectively, with respect to, at least in part, at least one component of a second fluid that is non-native to the subsurface formation;
• instructions to determine at least one of a level of contamination from the second fluid that contaminates the formation fluid at a time of interest based, at least in part, on the concentration of the non-interactive component in the formation fluid and the concentration of the interactive component in the formation fluid, wherein the time of interest is a time after a release of a free form of the interactive component begins in the wellbore;
• and
• instructions to alter an operation in the wellbore based, at least in part, on the level of contamination from the second fluid.