having substantially closed upper and lower ends 27 and 28 respectively and a cylindrical side wall 29 in downwardly spaced adjacent relation to the upper end 27 the side wall is longitudinally slotted at 30 for the admission of the fluid of the well which in many instances is a three phase system consisting of water sand particles and gas as evident in fig4 the slots are extended inwardly in tangential relation to a circle concentric to the chamber 26 to cause a swirling action of the fluid as it is admitted a cylindrical conduit 33 or vortex finder is extended through the upper end 27 of the vortexing chamber 26 and provides a downwardly extended open end 34 below the sots 30 and in downwardly spaced relation to said upper end of the chamber for reasons which will be apparent the vortex finder is disposed concentrically of the vortexing chamber a flat annular partition 37 circumscribes the vortex finder 33 in downwardly spaced relation to the upper end 27 of the vortexing chamber 26 and with the side wall 29 and closed upper end 27 forms an annular gas receiving compartment 38 in circumscribing relation to the vortex finder 33 openings 39 are provided through the partition 37 adjacent to the vortex finder.