Choke valve for high pressure drop
AssigneeCameron International Corporation
InventorsDavid Quin, Declan Elliott, Michael McKeon, Abinesh Gnanavelu
Life of this patent
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Abstract
An orifice valve as disclosed herein produces a high pressure drop in a flowing fluid. A valve body includes a flow restrictor with multiple flow orifices or ports. The flow ports produce fluid jets. The flow ports may be angled relative to the axial centerline of the valve body.
Claims20
An orifice valve for reducing the pressure of a fluid flowing from an oil well, the valve comprising:
- a valve body including a body centerline and a through-bore having a fluid inlet section;
- a flow restrictor disposed within the through-bore adjacent the fluid inlet section, the flow restrictor including a non-rotating body, an outer surface, and a plurality of elongate, fluidly parallel ports extending through the body, wherein the ports are configured with fixed dimensions;
- and
- a wear sleeve disposed within the through-bore adjacent the flow restrictor and including an annular body, a flow channel extending through the body and including a straight section and an expanding section, wherein the flow channel is in fluid communication with the fluidly parallel ports;
- wherein a flow path extends from the fluid inlet section, is divided by the fixed-dimension ports, and recombines in the flow channel;
- and
- wherein the fixed-dimension ports extend from the fluid inlet section to the flow channel.
An orifice valve for reducing the pressure of a fluid flowing from an oil well, the valve comprising:
- a valve body including a body centerline and a flow path passing through the valve body, the flow path comprising:
- an inlet section;
- a plurality of elongate flow ports disposed within the valve body, each port including a port inlet and a port exit and extending from the inlet section in the direction of the body centerline, the flow ports being continuous and configured with fixed diameters from the port inlet to the port exit;
- and
- a downstream flow channel located beyond the flow ports in the direction of fluid flow and having an inner surface and a straight section with a straight section diameter;
- wherein from the inlet section, the flow path divides among the fixed-diameter flow ports, and from the flow ports, the flow path recombines within the downstream flow channel;
- wherein the port exits are arranged within a diametral extent that is less than the straight section diameter.
An orifice valve for reducing the pressure of a fluid flowing from an oil well, the valve comprising:
- a valve body;
- and
- a flow path extending through the valve body and comprising:
- an inlet section;
- a plurality of elongate flow ports disposed within the valve body, each port including a port inlet located to receive fluid from the inlet section and a port exit, the flow ports being continuous and configured with fixed diameters from the port inlet to the port exit;
- and
- a downstream flow channel located to receive fluid from the plurality of port exits and including an expanding section;
- wherein from the inlet section, the flow path divides among the fixed-diameter flow ports, and from the flow ports, the flow path recombines within the downstream flow channel.
Dependencies are inferred from the claim text.