Fluid sensor cable assembly, system, and method

A method comprising:

• conducting a distributed phase interrogation signal along one or more conductive bodies extending along an elongated core body of a fluid sensor cable assembly, wherein a coating is disposed around the elongated core body, and wherein one or more slots are formed in the coating;
• receiving distributed phase measurement signals along the one or more conductive bodies in response to conducting the interrogation signal, wherein the distributed phase measurement signals are reflected back along a conductive coil at different locations along a length of the fluid sensor cable assembly and represent an amount of one or more phases of a fluid flowing outside of the fluid sensor cable assembly;
• heating the fluid sensor cable assembly by conducting a heating current for a designated period of time along the one or more of the conductive bodies;
• and
• subsequent to heating the fluid sensor cable assembly, receiving temperature measurements from temperature sensitive elements in one or more optical fibers of the fluid sensor cable assembly at different locations along the length of the fluid sensor cable assembly, the temperature measurements representative of heat flux out of the fluid sensor cable assembly at the different locations, wherein the one or more optical fibers are disposed within the one or more slots, and wherein each of the one or more conductive bodies is configured to conduct the heating current and the distributed phase measurement signals.

A fluid sensor system comprising:

• one or more fluid sensor cable assemblies configured to be disposed in one or more subterranean wells, the one or more fluid sensor cable assemblies including an elongated internal core body, a coating disposed around the elongated internal core body, one or more slots formed in the coating, one or more optical fibers extending along a length of the one or more fluid sensor cable assemblies and having temperature sensitive elements, one or more conductive coils wrapped around the elongated internal core body along the length of the one or more fluid sensor cable assemblies, wherein the one or more optical fibers are disposed within the one or more slots;
• and
• a computer acquisition system configured to be operatively coupled with the one or more fluid sensor cable assemblies, the computer acquisition system configured to conduct, for at least one of the fluid sensor cable assemblies, a distributed phase interrogation signal along the one or more conductive coils and to receive distributed phase measurement signals conducted along the one or more conductive coils in response to conducting the interrogation signal, wherein the distributed phase measurement signals are reflected back along the one or more conductive coils at different locations along the length of the fluid sensor cable assembly and represent amounts of different phases of a fluid at the different locations,
• wherein the computer acquisition system also is configured to heat at least one fluid sensor cable assembly by conducting a heating current along at least one of the conductive coils and, subsequent to heating the at least one fluid sensor cable assembly, to receive temperature measurements from the temperature sensitive elements at the different locations along the length of the at least one fluid sensor cable assembly, the temperature measurements representative of heat flux out of the fluid sensor cable assembly, and wherein each of the one or more conductive coils is configured to conduct the heating current and the distributed phase measurement signals.