Downhole telemetry during fluid injection operations

A method comprising:

• injecting a treatment fluid into a wellbore as part of a stimulation procedure being performed on the wellbore, the wellbore comprising a plug apparatus positioned within the wellbore, the plug apparatus including a seat and a first fluid passageway extending through the seat, the seat having received a drop device forming a fluid seal with the seat and thereby forming a wellbore fluid seal between a first section of the wellbore positioned uphole from the plug apparatus and a second section of the wellbore positioned downhole from the plug apparatus, the wellbore fluid seal providing the fluid seal against a fluid pressure applied by the treatment fluid to the first section of the wellbore while isolating the second section of the wellbore from the fluid pressure, wherein the first section of the wellbore includes a first set of perforation clusters providing fluid communication between the fluid pressure applied by the treatment fluid to the first section of the wellbore and a formation material that is proximate the perforation clusters, and wherein the second section of the wellbore includes a second set of perforation clusters providing fluid communication between a column of the treatment fluid injected into the first section of the wellbore and passing through the first passage of the plug apparatus prior to the drop device being received at the seat of the plug apparatus;
• receiving, at a plug apparatus controller, one or more output signals from one or more downhole sensor located within the wellbore and positioned proximate to the plug apparatus;
• processing, using the plug apparatus controller, the one or more output signals to produce data;
• and
• actuating, using the plug apparatus controller, a fluid signal generator to produce a fluid pulse signal in the treatment fluid, the fluid pulse signal including data produced based on the output signals, wherein the fluid signal generator is positioned in a second fluid passageway extending within and through the plug apparatus, the second fluid passageway extending around the seat of the plug apparatus.

A system comprising:

• a plug apparatus positionable within a wellbore, the plug apparatus including a seat and a first fluid passageway extending though the seat, the seat configured to receive a drop device configured to form a fluid seal with the seat and thereby form a wellbore fluid seal between a first section of the wellbore positioned uphole from the plug apparatus and a second section of the wellbore positioned downhole of the plug apparatus when the drop device has been received at the seat, the first fluid passageway configured to allow a fluid applied at a fluid pressure to the first section of the wellbore to pass through the first fluid passageway and be communicated to the second section of the wellbore when the drop device is not received at the seat, and wherein the seat and the drop device are configured to provide the wellbore fluid seal against a fluid pressure applied to the first section of the wellbore while isolating the second section of the wellbore from the fluid pressure when the drop device has been received at the seat;
• a fluid pulse generator positioned in a second fluid passageway extending within and through the plug apparatus, the second fluid passageway extending around the seat of the plug apparatus, wherein the fluid pulse generator is configured to controllably allow and block a flow of the fluid through the second fluid passageway to thereby generate a fluid pulse signal in a column of the fluid that is injected into the first section of the wellbore as part of a stimulation procedure being performed on the first section of wellbore following sealing of the first fluid passageway through the plug apparatus using the drop device and the seat, wherein the first section of the wellbore includes a first set of perforation clusters providing fluid communication between the column of fluid that is injected into the first section of the wellbore and a formation material that is proximate the first set of perforation clusters, and wherein the second section of the wellbore includes a second set of perforation clusters providing fluid communication between the column of fluid injected into the first section of the wellbore and passing through the first passage of the plug apparatus prior to the drop device being received at the seat of the plug apparatus;
• and
• a receiver positioned uphole from the fluid pulse generator, the receiver configured to detect the fluid pulse signal that has been transmitted through the column of the fluid that is injected into the first section of the wellbore, and to generate an output signal based in the detected fluid pulse signal.