Drilling and industrial lubricants; drilling lubricants, industrial lubricants and non-chemical lubricant additives for wellbore drilling and well servicing in the petroleum and gas industries

'addit':14 'chemic':12 'drill':1,5,17 'gas':25 'industri':3,7,26 'lubric':4,6,8,13 'non':11 'non-chem':10 'petroleum':23 'servic':20 'well':19 'wellbor':16

Chemical additives for oil well drilling fluids; Chemical fracturing fluids for use in the oil and gas industry; Drilling completion fluids for wellbore drilling and well servicing in the petroleum and gas industries, namely, an oil based drilling mud for use in drilling engineering of a wellbore; Chemical additives for lubricants for wellbore drilling and well servicing in the petroleum and gas industries

'addit':2,49 'base':37 'chemic':1,8,48 'complet':20 'drill':6,19,24,38,43,54 'engin':44 'fluid':7,10,21 'fractur':9 'gas':17,32,62 'industri':18,33,63 'lubric':51 'mud':39 'name':34 'oil':4,15,36 'petroleum':30,60 'servic':27,57 'use':12,41 'well':5,26,56 'wellbor':23,47,53

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