Abstract: Disclosed herein is a method and related system for controlling the injection of fluid into a plurality of spaced wellbores using a fluid distribution system to direct fluid from a fluid source to each of the spaced wellbores. In the method, high/low fluid flow rate limits and high/low fluid pressure limits for each wellbore are determined and inputted into an RTU. The fluid flow rate and fluid pressure for each wellbore are measured at the fluid distribution system and the measured fluid flow rate and the fluid pressure for each wellbore are compared to the determined limits. Thereafter, the flow of fluid to each wellbore is adjusted at the fluid distribution system for those wellbores that have a measured fluid flow rate and/or fluid pressure outside of the determined limits and the adjustment is continued until the measured flow rate and fluid pressure are within the determined limits.