Systems and methods for real-time spectrophotometric quantification of crude oil

A computer-implemented method of determining amount of crude oil in an effluent from a coreflooding apparatus, the method comprising the steps of:

• supplying an effluent stream obtained from a coreflooding apparatus to a mixing device, the effluent stream containing crude oil and water;
• blending the effluent stream with a solvent stream in the mixing device to produce a mixed stream;
• supplying the mixed stream to an in-line phase separator to produce a first stream containing the solvent and the crude oil from the effluent stream and a second stream containing water and water-miscible components from the effluent stream;
• passing the first stream to a continuous flow spectrophotometer to determine a plurality of absorption values corresponding to the crude oil content in the first stream;
• and
• transmitting the plurality of absorption values to a data analysis engine to determine the amount of crude oil in the effluent stream.