Downhole autonomous inflow control device

A method for a downhole autonomous inflow control device (D-AICD) disposed in a tubing string within a wellbore, the D-AICD comprising:

• a chamber in fluid communication with a reservoir;
• a galvanic inflow control valve (GICV) comprising a housing, a disengaged position, and an engaged position, the GICV configured to regulate a flow of well fluids entering the tubing string via the disengaged position and the engaged position, the housing comprising:
• a fluid inlet hydraulically connecting a cavity disposed inside the housing to the chamber;
• at least two outlets hydraulically connecting the cavity to the tubing string;
• in the disengaged position of the GICV, at least two copper spheres are disposed inside the housing, wherein each of the at least two copper spheres is disposed on a distinct seat on a steel base disposed on a central axis inside the housing;
• and
• in the engaged position of the GICV, the at least two copper spheres are configured to move inside the at least two outlets based on a reaction between the at least two copper spheres, the distinct seats, and the steel base due to saltwater exposure,
• wherein the distinct seats comprise spot tin solder bonds, and
• wherein a diameter of the at least two copper spheres is larger than a diameter of the at least two outlets,
• the method comprising:
• receiving well fluids produced from the reservoir into the chamber disposed in the D-AICD and into the cavity in the housing via the fluid inlet;
• measuring a water content and a water arrival within the chamber via a dielectric sensor coupled to the GICV;
• and
• regulating flow of the received well fluids entering the tubing string, via the at least two outlets in the housing, through the disengaged position and the engaged position of the GICV
• engaging the GICV into the engaged position by moving the at least two copper spheres to sit inside the at least two outlets based on the reaction between the at least two copper spheres, the seat, and the steel base due to saltwater exposure.