Power-operated downhole tools, namely, a rotating control device and valve used to automatically manage wellbore pressure and fluid circulation during oil and gas drilling operations

'automat':15 'circul':21 'control':9 'devic':10 'downhol':4 'drill':26 'fluid':20 'gas':25 'manag':16 'name':6 'oil':23 'oper':3,27 'power':2 'power-oper':1 'pressur':18 'rotat':8 'tool':5 'use':13 'valv':12 'wellbor':17

Flow control machines and apparatus, namely, an electrically controlled valve and rotating control device used to automatically manage wellbore pressures and fluid circulation during oil and gas drilling

'apparatus':5 'automat':17 'circul':23 'control':2,9,13 'devic':14 'drill':28 'electr':8 'flow':1 'fluid':22 'gas':27 'machin':3 'manag':18 'name':6 'oil':25 'pressur':20 'rotat':12 'use':15 'valv':10 'wellbor':19

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