Apparatus and equipment for use in the construction of oil and gas wells and downhole tools for sealing oil and gas wells, namely, packers for use in oil and gas wells to block or control the flow of fluids and anchors and wellbore centralizers and parts and fittings for the aforesaid goods

'aforesaid':51 'anchor':41 'apparatus':1 'block':33 'central':44 'construct':8 'control':35 'downhol':15 'equip':3 'fit':48 'flow':37 'fluid':39 'gas':12,21,30 'good':52 'name':23 'oil':10,19,28 'packer':24 'part':46 'seal':18 'tool':16 'use':5,26 'well':13,22,31 'wellbor':43

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