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1. A rotary drill bit, comprising: a toothed rotating element rotatably mounted, through a b Oil wells and gas wells are drilled by a process of rotary drilling. In a conventional drill rig

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ANTI-STALL TOOL FOR DOWNHOLE DRILLING ASSEMBLIES -

An anti-stall tool in an oil well drilling assembly that controls reciprocation of the drill bit by a controller that alters weight-on-bit (WOB) depending upon measured downhole pressur

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