Multi-well chemical injection manifold and system

A fluid handling system suitable for injecting a pressurized fluid from a pump that is driven by a motor into an oilfield network, the system comprising:

• a pump having a motor;
• a manifold fluidly connected to the pump, the manifold comprising:
• an inlet for receiving the fluid from the pump;
• a plurality of outlets downstream of and fluidly connected to the inlet;
• and
• a plurality of electric valves downstream of and fluidly connected, respectively, to the plurality of outlets, each of the plurality of electric valves configured to selectively open and close to regulate a flow of the fluid from the plurality of outlets to a plurality of wells fluidly connected, respectively, to the plurality of electric valves;
• and
• a controller configured to:
• receive a plurality of flow rate values of the plurality of wells;
• determine a plurality of duty cycles for the plurality of electric valves based on the plurality of flow rate values;
• determine a schedule for the plurality of duty cycles so that only one of the plurality of electric valves is controlled open at a given time;
• and
• detect a failed one of the plurality of electric valves based on an increase of a parameter.

A manifold for use in a fluid handling system suitable for injecting a pressurized fluid from a pump that is driven by a motor into an oilfield network, the manifold comprising:

• a manifold block having an inlet for receiving the fluid from the pump;
• a plurality of outlets downstream of and fluidly connected to the inlet;
• and
• a plurality of electric valves downstream of and fluidly connected, respectively, to the plurality of outlets.