lift and surfactant lift fig3 is a partial cross sectional view of a flow interruption pulse generator 40 of the present invention pulse generator 40 includes a valve body 62 forming a fluid channel 64 a cross bore 66 intersecting channel 64 and a piston 68 electromagnetic solenoids 70 and 72 are connected to the first and second ends 66 a and 66 b of bore 66 respectively solenoids 70 and 72 are functionally connected to controller 44 fig1 and 2 for selectively venting bore 66 and motivating movement of piston 68 operation of solenoids 70 and 72 moves piston head 74 from the second end 66 b of bore 66 into channel 64 and then back into bore 66 operation of pulse generator 40 to create a pressure pulse is described with reference to fig1 through 3 pulse generator 40 is connected within flowline 31 through channel 64 controller sends a signal to solenoid 70 to vent motivating piston 68 and moving piston head 74 into channel 64 controller 44 then sends a signal to solenoid 72 to vent motivating piston 68 and moving piston head 74 from channel 64 and toward second bore end 66 b this fast acting movement of piston head 74 into flow channel 64 creates a pressure pulse that travels through the fluid in flowline 31 and tubing 22 fig4 is a view of another embodiment of a flow interruption pulse generator 40 of the present invention pulse generator 40 includes a fast acting motor driven valve 76 in fluid connection with flowline 31 motor driven valve 76 is in operational connection with controller 44 to create a pressure pulse in flowline 31 and tubing 22 controller 44 substantially instantaneously opens and closes valve 76 releasing gas from flowline 31 pulse generator.