the act of drilling

the act of drilling a hole in the earth in the hope of producing petroleum

a bit used in drilling for oil

a mixture of clays and chemicals and water; pumped down the drill pipe to lubricate and cool the drilling bit and to flush out the cuttings and to strengthen the sides of the hole

a mixture of clays and chemicals and water; pumped down the drill pipe to lubricate and cool the drilling bit and to flush out the cuttings and to strengthen the sides of the hole

a series of tubes (joined by screwed collars) that connect a drilling platform to the drilling bit; rotates the bit and supplies drilling mud

drilling rig consisting of an offshore platform (floating or fixed to the sea bed) from which many oil wells can be bored radially

rig used in drilling for oil or gas