apparatus for use in drilling subterranean oil and gas wells, namely, an apparatus that is placed at the bottom of a drillstring for measuring-while-drilling parameters such as direction, pressure, weight, temperature and angle, with the capability to adjust the direction of the drillstring in response to such measurements

'adjust':41 'angl':36 'apparatus':1,13 'bottom':19 'capabl':39 'direct':31,43 'drill':5,27 'drillstr':22,46 'gas':9 'measur':25,51 'measuring-while-dril':24 'name':11 'oil':7 'paramet':28 'place':16 'pressur':32 'respons':48 'subterranean':6 'temperatur':34 'use':3 'weight':33 'well':10

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