Polymers, biopolymers, polymeric additives and biopolymeric additives for use as components of drilling fluids; Polymers, biopolymers, polymeric additives and biopolymeric additives for use as ready mixes for drilling fluids; chemicals and chemical additives for use as components of drilling fluids; chemicals and chemical additives for use as ready mixes for drilling fluids; chemicals for use in industry, namely, drilling fluids and drilling fluid ready mixes; drilling fluid components, namely, filtration reducers, thinners, dispersants, viscosifiers, flocculants, surfactants, emulsifiers, temperature stabilizers, fluid-loss control and lost-circulation materials

'addit':4,7,18,21,33,44 'biopolym':2,16 'biopolymer':6,20 'chemic':30,32,41,43,53 'circul':87 'compon':11,37,68 'control':83 'dispers':73 'drill':13,28,39,51,59,62,66 'emulsifi':77 'filtrat':70 'floccul':75 'fluid':14,29,40,52,60,63,67,81 'fluid-loss':80 'industri':57 'loss':82 'lost':86 'lost-circul':85 'materi':88 'mix':26,49,65 'name':58,69 'polym':1,15 'polymer':3,17 'readi':25,48,64 'reduc':71 'stabil':79 'surfact':76 'temperatur':78 'thinner':72 'use':9,23,35,46,55 'viscosifi':74

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