fluid products for use in drilling applications, namely, oil well drilling fluids, water well drilling fluids, exploration drilling fluids, geotechnical drilling fluids, and underground utility drilling fluids, chemical additives and chemicals for use in the geo environmental, water well, mineral exploration, oil and gas exploration, mining, geotechnical, geothermal, horizontal directional drilling and construction industries

'addit':29 'applic':7 'chemic':28,31 'construct':53 'direct':50 'drill':6,11,15,18,21,26,51 'environment':37 'explor':17,41,45 'fluid':1,12,16,19,22,27 'gas':44 'geo':36 'geotechn':20,47 'geotherm':48 'horizont':49 'industri':54 'mine':46 'miner':40 'name':8 'oil':9,42 'product':2 'underground':24 'use':4,33 'util':25 'water':13,38 'well':10,14,39

(Based on 44(e)) cement for use in drilling applications

'44':3 'applic':10 'base':1 'cement':5 'drill':9 'e':4 'use':7

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