| drilling | the act of drilling a hole in the earth in the hope of producing petroleum |
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| drilling | the act of drilling |
| drilling | a bit used in drilling for oil |
| drilling | a mixture of clays and chemicals and water |
| drilling | a mixture of clays and chemicals and water |
| drilling | a series of tube (joined by screwed collars) that connects a drilling platform to the drilling bit |
| drilling | drilling rig consisting of an offshore platform (floating or fixed to the sea bed) from which many oil wells can be bored radially |
| drilling | rig used in drilling for oil or gas |