Lubricants for aiding in the drilling of holes in the ground in the oil and gas industry, namely, mechanical lubricating beads, including dual density beads which consist of high density, spherical glass beads and low density, spherical co-polymer beads; drilling lubricants in the nature of polystyrene beads; drilling lubricants in the nature of fused silicon dioxide beads; drilling lubricants in the nature of polystyrene/silicon dioxide beads; and polyether polyol industrial lubricants

'aid':3 'bead':21,25,33,41,49,59,68 'co':39 'co-polym':38 'consist':27 'densiti':24,30,36 'dioxid':58,67 'drill':6,42,50,60 'dual':23 'fuse':56 'gas':16 'glass':32 'ground':11 'high':29 'hole':8 'includ':22 'industri':17,72 'low':35 'lubric':1,20,43,51,61,73 'mechan':19 'name':18 'natur':46,54,64 'oil':14 'polyeth':70 'polym':40 'polyol':71 'polystyren':48 'polystyrene/silicon':66 'silicon':57 'spheric':31,37

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