Title:
CEMENTING HEAD
Document Type and Number:
WIPO Patent Application WO2006014939
Kind Code:
A3
Abstract:
A tool for dropping one or more balls and then one or more darts features a closable ball drop opening that works automatically after the ball release to minimize damage to the subsequently released dart. A retainer keeps the darts from coming back up above the dart launcher in the event of a pressure surge in the well. The dart launcher features a dedicated movable barrel for each dart that can be locked in a fully misaligned and fully aligned position with the casing or tubular. A handle (14) is retained to the dart housing and can be manipulated to defeat the lock and rotate a given barrel. The darts may be inspected in their respective barrels before launch and the launch order is variable.
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Inventors:
ARCE DAVID A (US)
BAUGH JOHN L (US)
SMITH SIDNEY K (US)
BAUGH JOHN L (US)
SMITH SIDNEY K (US)
Application Number:
PCT/US2005/026462
Publication Date:
July 06, 2006
Filing Date:
July 26, 2005
Export Citation:
Assignee:
BAKER HUGHES INC (US)
International Classes:
E21B33/05
Foreign References:
| US4491177A | 1985-01-01 | |||
| EP0837216A2 | 1998-04-22 | |||
| US20030155114A1 | 2003-08-21 |
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