6 a multi level single pulse generator hydrodynamic pulse tool 40 is illustrated as shown multi level single pulse generator tool 40 comprises a resonance chamber 41 with two opposing upper pulse emitting outlets 42 one shown in fig6 and two opposing lower pulse emitting outlets 43 both shown in fig5 opposing pairs of pulse emitting outlets 42 and 43 are out of phase by 90 u00b0 so in combination the illustrated u201c double deck u201d multi level single pulse generator tool 40 comprises a single pulse emitting outlet at roughly every 90 u00b0 about the longitudinal axis of the tool 40 as best seen in fig5 tool 40 further comprises pulse generator 44 with three upper tangential jets 45 and three lower tangential jets 46 each of the three upper tangential jets 45 and each of the three lower tangential jets 46 are spaced apart at roughly 120 u00b0 intervals relative to the longitudinal axis of the pulse generator 40 and the upper and lower sets of tangential jets 45 46 are out of phase by roughly 60 u00b0 such that in combination the pulse generator 44 comprises a tangential jet at roughly every 60 u00b0 about the longitudinal axis of the pulse generator 44 accordingly as the pulse generator 44 is driven by the pressurized fluid in use the tool 40 will sequentially propagate pressure waves radially outward along 0 u00b0 90 u00b0 180 u00b0 and 270 u00b0 vectors relative to the longitudinal axis of the tool 40 fig9 illustrates a schematic perspective view of a representative downhole assembly comprising a hydrodynamic pulse tool in accordance with embodiments of the presently disclosed subject matter downhole assembly 60 comprises.