System and method for the detection and transmission of downhole fluid status

A system for signaling the detection of a fluid change in a reverse cementing operation, the system comprising:

• a plurality of burst discs located in a series in a central bore of a casing in a wellbore, each burst disc of the plurality of burst discs having a first position allowing fluid flow through the central bore and a second position preventing fluid flow through the central bore;
• wherein, when the burst disc is in the second position, the burst disc ruptures due to pressure from a fluid downhole from the burst disc when the pressure reaches a predetermined pressure and the rupturing creates a pressure pulse such that a series of pressure pulses is created by activating and rupturing one burst disc after another;
• a plurality of sensors associated with the plurality of burst discs, such that each burst disc has one sensor of the plurality of sensors associated with the burst disc, and wherein the sensor that detects at least one property that is different between a first fluid and a cement, wherein the cement is introduced into an annulus formed between the casing and wellbore and flows downhole thereby displacing the first fluid to flow uphole through the central bore, and wherein the sensor detects a change in the property when the cement flows past the sensor;
• a receiver located at a pipe's uphole end and configured to detect the pressure pulse.