formed u201c on the fly u201d while drilling a water sensitive shale prone to balling bits and stabilizers by addition of the original pumpable emulsion to the suction pit of the water based drilling fluid prior to pumping the fluid downhole the concentrated aquacol in the phase 1 droplets would be isolated from the miscible phase 3 by the hydrophobic phase 2 film and would be transported to the bottom of the hole during pumping the multiple emulsion droplets would be designed to survive the high shear environment of the drill pipe but not the extreme high shear environment below the bit nozzles the extreme high shear environment at the borehole wall surface under the bit nozzles as the nozzles blast fluid at the borehole surface would induce rupture of the hydrophobic film separating phase 1 and phase 3 to expose the borehole to phase 1 the localized concentration of the aquacol shale stabilizer near the exposed borehole wall would be greater than the gross concentration of the aquacol 20 u00d7 50 u00d7 5 0 5 which would increase the efficiency of the aquacol over that achievable by simply adding the aquacol to the drilling fluid at a uniform 0 5 vol in the foregoing specification the invention has been described with reference to specific embodiments thereof and has been suggested as effective in providing pumpable multiple phase compositions which can effectively carry agents and components downhole for controlled release in space and time however it will be evident that various modifications and changes can be made thereto without.