Apparatus and methods are disclosed for actively controlling the flow of hydrocarbon fluids from a producing formation at the downhole sand screen. The compressor assembly includes a rotating impeller including an inlet, an outlet, and a body extending therebetween. The void includes a bottom portion located between the upper surface and the bottom surface of the second barrier metal layer. The support layer includes discrete portions of support material corresponding generally to the discrete locations of the valve stations and the valve actuators. The self-clocking delay unit may use edge-dependent delay units in a feedback loop to generate the clock signal.