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Dual-Action Bypass Sub
The DABS* (Dual-Action Bypass Sub) WELLBORE PRODUCTIVITY* tool from M-I SWACO* is designed to run in the cleanup string when it is desirable to jet the riser and Blowout Preventer (BOP) while Running In Hole (RIH) and/or when Pulling Out Of Hole (POOH). It can also be used nearer the bottom of the string as a bypass valve above a drilling motor or small-diameter tail pipe.
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Features
- One-piece, full-strength mandrel
- Two sets of ports and two internal ball seats that can be moved to open/close ports
- Available in 43⁄4- and 61⁄2-in. OD
- Also available as 11- and 16-in. (279- and 406-mm) jetting tools
Benefits
- Used to jet BOPs and risers
- Can be used to bypass drilling motors
- Can be run above small, non-draining pipe
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Dual-Action Bypass Sub (DABS) |
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