Metal casings used to stabilize the wellbore in oil and gas wells; Metal clad pipes; Metallic pipes; Metal pipes and metal fittings therefor; Metal pipes and tubes; Metal pipes for liquid and gas transfer; Pipe connectors of metal; Pipes of metal; Tubes of metal for industrial use

'case':2 'clad':14 'connector':36 'fit':22 'gas':11,33 'industri':46 'liquid':31 'metal':1,13,16,18,21,24,28,38,41,44 'oil':9 'pipe':15,17,19,25,29,35,39 'stabil':5 'therefor':23 'transfer':34 'tube':27,42 'use':3,47 'well':12 'wellbor':7

Drilling machines; Oil field equipment, namely, drilling rig mechanical handling machines and devices; Oil field equipment, namely, drilling rig mechanization machines and devices; Oilfield production machines for extracting oil from geological layers and processing hydrocarbons; Oil-well pumping machines; Parts of oilfield wellhead machines, namely, gate valves, ball valves, check valves, plug valves, globe valves, choke and manifold industrial pumps, pump and valve parts, pipe fittings and flanges; Well drilling machines

'ball':49 'check':51 'choke':57 'devic':13,23 'drill':1,7,18,71 'equip':5,16 'extract':28 'field':4,15 'fit':67 'flang':69 'gate':47 'geolog':31 'globe':55 'handl':10 'hydrocarbon':35 'industri':60 'layer':32 'machin':2,11,21,26,40,45,72 'manifold':59 'mechan':9,20 'name':6,17,46 'oil':3,14,29,37 'oil-wel':36 'oilfield':24,43 'part':41,65 'pipe':66 'plug':53 'process':34 'product':25 'pump':39,61,62 'rig':8,19 'valv':48,50,52,54,56,64 'well':38,70 'wellhead':44

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