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US 4,566,494 AGranted
Vent line system
AssigneeHydril Company
InventorJoseph R. Roche
Life of this patent
Estimating the term…
Abstract
A vent line system is disclosed which is adapted for connection to a flow diverter attached to a drilling rig. The system assures that the vent line is always open for discharge of pressurized drilling fluid away from the drilling rig in one of two directions.
Claims8
A diverting system for directing drilling fluid away from a drilling rig in the event of a kick while drilling a well, the system comprising,
- a drilling conduit through which the drilling fluid returns to the drilling rig,
- an uninterruptible vent line,
- a flow diverter means connected to said drilling conduit and to one end of said vent line for directing drilling fluid to said vent line in the event of a kick in the well,
- two uninterruptible deflect lines directed in different directions away from the drilling rig, and
- deflecting means connected to one end of each of said two deflect lines and to the other end of said vent line for directing fluid in said vent line to at least one of said two deflect lines while assuring against inadvertent simultaneous closure of said two deflect lines.
2 more elements
A diverting system for directing drilling fluid away from a drilling rig in the event of a kick while drilling a well, the system comprising,
- a drilling conduit through which the drilling fluid returns to the drilling rig,
- an uninterruptible vent line,
- a flow diverter means connected to said drilling conduit and to one end of said vent line for directing drilling fluid to said vent line in the event of a kick in the well, said flow diverter means having a means for controlling flow of fluid through said vent line,
- two uninterruptible deflect lines directed away from the drilling rig, and
- deflecting means connected to one end of each of said two deflect lines and to the other end of said vent line for directing fluid in said vent line to at least one of said two deflect lines while assuring against inadvertent simultaneous closure of said two deflect lines.
2 more elements
Dependencies are inferred from the claim text.