examples of how the inventions can be made and used in these drawings reference characters are used throughout the several views to indicate like or corresponding parts in fig1 there is an abrasive slurry delivery apparatus 10 which embodies principles of the present invention as illustrated the top of the drawing is intended to be toward the surface and the bottom of the drawing page toward the well bottom while wells commonly are laid out in a vertical direction it is understood that inclined and horizontal configurations exist when the descriptive terms u201c up and down u201d are used in reference to a drawing they are intended to indicate location on the drawing page and not necessarily orientation in the ground as the present inventions have utility no matter how the well bore is orientated apparatus 10 as representatively illustrated in fig1 is specially adapted for use within a tool string known to those skilled in the art as a service tool string not shown which is suspended from tubing extending to the earth 39 s surface the tubing being longitudinally disposed within protective casing in a subterranean wellbore the service tool string is typically inserted through a packer not shown during a fracturing job a pressurized abrasive slurry is then pumped through the tubing and into the service tool string tubular upper connector 12 and lower connector 14 permit interconnection of the apparatus 10 into the service tool string accordingly upper portion 16 of upper connector 12 is connected to the service tool string above the apparatus 10 and.