Rathole rig

Rathole rig

A small, usually truck-mounted rig, the purpose of which is to drill ratholes for regular drilling rigs that will be moved in later. A rathole rig may also drill the top part of the hole, the conductor hole, before the main rig arrives on location.

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Part of Speech: noun
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Industry/Domain: Oil & gas
Category: Drilling
Company: PETEX
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