Generating a soft sensor for crude stabilization in the petroleum industry

A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:

• generating a global theoretical graphical representation of a soft sensor based on a cursory model;
• generating a plurality of local real-life graphical representations for the soft sensor based on the global theoretical graphical representation of the soft sensor, each of the plurality of local real-life graphical representations corresponding to a respective local regime;
• generating a global real-life graphical representation for the soft sensor by combining the plurality of local real-life graphical representations;
• generating a set of numerical values for the soft sensor based on the global real-life graphical representation;
• updating the soft sensor based on lab results and the set of numerical values;
• and
• using the updated soft sensor to control at least one of a stabilizer bottom temperature or a steam injection ratio in a crude production process.

A computer-implemented system, comprising:

• a computer memory;
• and
• a hardware processor interoperably coupled with the computer memory and configured to perform operations comprising:
• generating a global theoretical graphical representation of a soft sensor based on a cursory model;
• generating a plurality of local real-life graphical representations for the soft sensor based on the global theoretical graphical representation of the soft sensor, each of the plurality of local real-life graphical representations corresponding to a respective local regime;
• generating a global real-life graphical representation for the soft sensor by combining the plurality of local real-life graphical representations;
• generating a set of numerical values for the soft sensor based on the global real-life graphical representation;
• updating the soft sensor based on lab results and the set of numerical values;
• and
• using the updated soft sensor to control at least one of a stabilizer bottom temperature or a steam injection ratio in a crude production process.