Home > Term: Kelly cock
Kelly cock
A valve installed at one or both ends of the kelly. When a high-pressure backflow occurs inside the drill stem, the valve is closed to keep pressure off the swivel and rotary hose.
- Jenis Kata: noun
- Industri / Domain: Minyak & gas
- Kategori: Pengeboran
- Company: PETEX
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- Harry8L
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