Analysis for oil field exploitation; Oil well testing; Conducting geological surveys; Oil-field surveys; Oil prospecting; Geological prospecting; Geological research; Calibration services; Surveying

'analysi':1 'calibr':22 'conduct':9 'exploit':5 'field':4,14 'geolog':10,18,20 'oil':3,6,13,16 'oil-field':12 'prospect':17,19 'research':21 'servic':23 'survey':11,15,24 'test':8 'well':7

Mining extraction; Quarrying services; Drilling of wells; Drilling of deep oil or gas wells

'deep':10 'drill':5,8 'extract':2 'gas':13 'mine':1 'oil':11 'quarri':3 'servic':4 'well':7,14

Oil field equipment, namely, drilling rig mechanization machines and devices; Oil refining machines; Sludge pumps; Oil-well pumping machines; Vacuum pumps; Sump pumps; Vertical turbine pumps; Sewage pumps; Pumps as parts of machines, motors and engines; Mine borers; Drilling machines

'borer':39 'devic':10 'drill':5,40 'engin':37 'equip':3 'field':2 'machin':8,13,20,34,41 'mechan':7 'mine':38 'motor':35 'name':4 'oil':1,11,17 'oil-wel':16 'part':32 'pump':15,19,22,24,27,29,30 'refin':12 'rig':6 'sewag':28 'sludg':14 'sump':23 'turbin':26 'vacuum':21 'vertic':25 'well':18

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