Chemicals and chemical preparations for use as additives for crude oil, and/or oilfield specialty chemicals and chemical preparations, namely, [ surfactants, degreasers, corrosion inhibitors, drag reducing agents, demulsifiers, ] chemical scavengers, hydrogen sulphide scavengers [, iron sulphide scavengers, pour point depressants, scale inhibitors, foaming agents, chemical preparations for use in the manufacture of biocides ]

'addit':8 'agent':26,42 'and/or':12 'biocid':51 'chemic':1,3,15,17,28,43 'corros':22 'crude':10 'degreas':21 'demulsifi':27 'depress':38 'drag':24 'foam':41 'hydrogen':30 'inhibitor':23,40 'iron':33 'manufactur':49 'name':19 'oil':11 'oilfield':13 'point':37 'pour':36 'prepar':4,18,44 'reduc':25 'scale':39 'scaveng':29,32,35 'specialti':14 'sulphid':31,34 'surfact':20 'use':6,46

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