Reduced cavitation oilfield choke
First Claim
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1. A choke with reduced cavitation and/or flashing due to high pressure fluids passing through the choke, comprising:
- a housing having a high pressure inlet port and a low pressure outlet port;
one or more cages positioned within the housing and having one or more inlet ports to receive fluid into the cages and one or more outlet ports to allow fluid to exit the cages, wherein one of the cages comprises a bead cage;
an actuator;
a flow controller coupled to the actuator and configured to at least partially block the inlet ports into at least one of the cages; and
a plurality of beads positioned within the bead cage, such that fluid flows between the bead cage and the plurality of beads and between the beads when passing through the bead cage, and fluid pressure is reduced while fluid passes through the bead cage,wherein the one or more outlet ports of the bead cage are formed in a lid removable secured to the bead cage, andwherein at least a portion of a length of the bead cage inner diameter is threaded and the lid is formed with mating threads.
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Abstract
A choke with reduced cavitation and/or flashing due to a high pressure fluids passing through the choke includes a housing having a high pressure inlet port and a low pressure outlet port, and a cage positioned within the housing and having a passage for passing fluid therethrough. A plurality of beads are each positioned in the cage, such that fluid flows between the cage and the beads and between the beads when passing through the cage. Fluid pressure is reduced by the fluid passing through the cage, thereby reducing cavitation.
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Citations
20 Claims
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1. A choke with reduced cavitation and/or flashing due to high pressure fluids passing through the choke, comprising:
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a housing having a high pressure inlet port and a low pressure outlet port; one or more cages positioned within the housing and having one or more inlet ports to receive fluid into the cages and one or more outlet ports to allow fluid to exit the cages, wherein one of the cages comprises a bead cage; an actuator; a flow controller coupled to the actuator and configured to at least partially block the inlet ports into at least one of the cages; and a plurality of beads positioned within the bead cage, such that fluid flows between the bead cage and the plurality of beads and between the beads when passing through the bead cage, and fluid pressure is reduced while fluid passes through the bead cage, wherein the one or more outlet ports of the bead cage are formed in a lid removable secured to the bead cage, and wherein at least a portion of a length of the bead cage inner diameter is threaded and the lid is formed with mating threads. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A choke, comprising:
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a housing having a high pressure inlet port and a low pressure outlet port; one or more cages positioned within the housing and having one or more inlet ports to receive fluid into the cages and one or more outlet ports to allow fluid to exit the cages, wherein a first one of the cages comprises a bead cage; an actuator; a flow controller coupled to the actuator and configured to at least partially block the inlet ports into at least one of the cages; and a plurality of beads positioned within the bead cage, such that fluid is permitted to flow between the bead cage and the plurality of beads and between the beads when passing through the bead cage, wherein the plurality of beads are bonded to each other and to the cage. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A choke with reduced cavitation and/or flashing due to high pressure fluids passing through the choke, comprising:
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a housing having a high pressure inlet port and a low pressure outlet port; one or more cages positioned within the housing and having one or more inlet ports to receive fluid into the cages and one or more outlet ports to allow fluid to exit the cages, wherein one of the cages comprises a bead cage; an actuator; a flow controller coupled to the actuator and configured to at least partially block the inlet ports into at least one of the cages; and a plurality of beads positioned within the bead cage, such that fluid flows between the bead cage and the plurality of beads and between the beads when passing through the bead cage, and fluid pressure is reduced while fluid passes through the bead cage, wherein the one or more outlet ports of the bead cage are formed in a lid removable secured to the bead cage; wherein the lid is configured to retain the plurality of beads in the cage; and wherein the lid is adjustably engaged with the bead cage to compress a variety of quantities of beads loaded into the bead cage for different flow ranges of the choke.
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Specification