Systems and methods for volume concentration determination with diffraction of electromagnetic radiation

A method of determining a volume concentration of a fluid in a sample, comprising:

• generating a standing acoustic wave through the sample using a transducer;
• emitting electromagnetic (EM) radiation into the sample using a transmitter such that the EM radiation is diffracted by the sample;
• receiving the diffracted EM radiation with a detector;
• generating a signal indicative of a wavelength of an acoustic wave corresponding to the standing acoustic wave in response to receiving the diffracted EM radiation using the detector;
• and
• analyzing the signal to determine the volume concentration of the fluid in the sample using a velocity of the acoustic wave corresponding to the standing acoustic wave in the sample and at least one of a Bulk modulus of the sample and a density of the sample.

A system for determining a volume concentration of a fluid in a sample, comprising:

• a downhole tool positionable in a wellbore intersecting a subterranean earth formation, comprising:
• a transducer configured to generate a standing acoustic wave through the sample;
• a transmitter configured to emit electromagnetic (EM) radiation into the sample such that the EM radiation is diffracted by the sample;
• and
• a detector responsive to the diffracted EM radiation and configured to generate a signal indicative of a wavelength of an acoustic wave corresponding to the standing acoustic wave;
• and
• a processor configured to analyze the signal to determine the volume concentration of the fluid in the sample using a velocity of the acoustic wave corresponding to the standing acoustic wave in the sample and at least one of a Bulk modulus of the sample and a density of the sample.