Systems and methods for analyzing a multiphase fluid

A device, comprising:

• a primary coupling device coupled to an optical fiber, wherein the primary coupling device:
• splits electromagnetic radiation into a first electromagnetic radiation part and a second electromagnetic radiation part, and
• directs the first electromagnetic radiation part through the optical fiber to irradiate a reflector immersed in a multiphase fluid, wherein the reflector reflects a portion of the first electromagnetic radiation part to generate reflected portion of the first electromagnetic radiation part;
• and
• a processing subsystem that determines the concentration of a fluid of interest, a gas to liquid phase fraction, or a combination thereof in the multiphase fluid based upon the intensity of at least a portion of the reflected portion of the first electromagnetic radiation part and the intensity of the second electromagnetic radiation part,
• wherein a principal optical axis of the reflector is aligned with a principal optical axis of the optical fiber, and an end of the optical fiber is in physical contact with the reflector.

A system, comprising:

• a subsystem immersed in a multiphase fluid in a reservoir, wherein the subsystem comprises one or more devices mounted on respective bow string, wherein at least one of the one or more devices comprise:
• a primary coupling device coupled to a first electromagnetic guiding device and a second electromagnetic guiding device, wherein the primary coupling device:
• splits electromagnetic radiation into a first electromagnetic radiation part and a second electromagnetic radiation part,
• directs the first electromagnetic radiation part through the first electromagnetic guiding device to irradiate a reflector immersed in a multiphase fluid, wherein the reflector reflects a portion of the first electromagnetic radiation part to generate reflected portion of the first electromagnetic radiation part;
• a processing subsystem that analyze the multiphase fluid based upon the intensity of at least a portion of the reflected portion of the first electromagnetic radiation part and the intensity of the second electromagnetic radiation part,
• wherein a principal optical axis of the reflector is substantially aligned with a principal optical axis of the first electromagnetic guiding device;
• and
• a computing and display device located outside the reservoir, and communicatively coupled to the subsystem to receive signals representative of analysis results of the multiphase fluid.

A method, comprising:

• splitting electromagnetic radiation into a first electromagnetic radiation part and a second electromagnetic radiation part;
• directing the first electromagnetic radiation part to irradiate a reflector immersed in a multiphase fluid;
• generating a reflected portion of the first electromagnetic radiation part by reflecting a portion of the first electromagnetic radiation part by the reflector;
• splitting the reflected portion of the first electromagnetic radiation part into a first split reflected portion and a second split reflected portion;
• and
• analyzing the multiphase fluid based upon the first split reflected portion and the second electromagnetic radiation part.