This invention relates to a method and means to control an irrigation system and an apparatus for chemical input. Step may include flaring the embossment and a leading portion of the end portion of the exhaust pipe. The system also includes a selected first plurality of actuators, with each actuator connected to the first HSD and connected to a respective one of the first LSDs to operate in a first operational mode. The combination of injected fluids and cyclical pressure drive profiles beneficially enhances hydrocarbon recovery from the reservoir.