An improved drill string safety valve device
AssigneeMoonshine Solutions, A.S.
InventorsJan Georg TVEITERÅS, Helge HOPE, Alf BREIVIK
Life of this patent
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Abstract
A drill string safety valve device (1) has a body (2) with a through-going flow bore (25) and connectors (3, 4) at respective ends (19, 18) for connection to tubulars, such as pipe joints. A valve member (7; 29) is movably arranged in said flow bore (25) and configured for being set in one of two states: a first state of the valve member allows fluid to flow in both directions though the flow bore, and a second state of the valve member allows fluid flow through the flow bore in only one direction. The valve member may be a rotatable ball valve (7) with a through-going flow bore (21).
Claims10
A drill string safety valve device, comprising a body with a through-going flow bore and connectors at respective ends of the flow bore for connection to tubulars, characterized by:
- a valve member movably arranged in said flow bore and configured for being set in one of two states, wherein a first state of the valve member allows fluid to flow in both directions though the flow bore, and wherein a second state of the valve member allows fluid flow through the flow bore in only one direction.
Dependencies are inferred from the claim text.