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Oil Authority›Glossary›U›ultrafine

ultrafine

Referring to any particle in the size range 2 to 44 microns.

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Related Terms

U-tube effect

The U-tube effect in well drilling refers to the hydrosta

ULCC

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A valve installed above the kelly that can be closed manually to protect the rotary hose from high pressure in the drill

ultra heavy oil

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ultra-long spaced electrical log

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A supertanker with 500,000 deadweight tons of capacity or more. The term is commonly abbreviated as ULCC.

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Edited by Adam Humphreys

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