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Oilfield Glossary
Oilfield Glossary
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Tools

pilot mill

1. n. [Well Workover and Intervention]
A downhole milling tool designed with an extended pilot or central stinger section that is inserted in the bore of the packer, tubular or equipment being milled. This design helps ensure that the mill follows the desired path and does not damage the casing or liner wall as the milling operation progresses.