Choke restrictor devices and methods
AssigneeWood Group Pressure Control Limited
InventorStephen McCulloch
Life of this patent
Estimating the term…
Abstract
Flow enhancing restrictors are located within a fluid conduit to provide pressure reduction and flow enhancement. The restrictors may be used in combination with a conventional choke valve or as a stand-alone pressure reduction means. Alternative exemplary embodiments for flow enhancers are described. Each of the flow enhancers has a generally cylindrical base with at least one fluid passage disposed therethrough. Each of the flow enhancers also provides a dome that projects upwardly from the center of the base to assist in directing fluid flow and receiving the abrasive forces associated with the fluid.
Claims16
A choke valve assembly for controlling and reducing fluid pressure within a fluid conduit, the fluid flow choke valve assembly comprising:
- a fluid conduit;
- a choke mechanism within the fluid conduit for modulating fluid flow and creating a first fluid pressure reduction within the fluid conduit, the choke mechanism comprising:
- a flow cage having a plurality of fluid openings therein;
- and
- a tip member mounted for linear movement within the flow cage and also having
- a plurality of fluid openings therein that can be selectively aligned with the fluid openings in the flow cage to create opposing fluid jets within the choke mechanism;
- and
- a flow restrictor located within the fluid conduit downstream of the choke mechanism for creating a fluid pressure drop within the fluid conduit, the flow restrictor having a generally cylindrical base and a dome projecting upwardly from a central portion of the base.
A method of reducing fluid pressure within a fluid conduit comprising:
- disposing a first fluid restricting flow enhancer within a fluid conduit, the flow enhancer having a generally cylindrical base with a plurality of fluid passages disposed therethrough and a dome projecting upwardly from the base;
- flowing fluid through the fluid conduit and the flow enhancer to effect a pressure drop within the conduit across the enhancer;
- and
- receiving abrasives within the fluid conduit upon an upper wear surface of the dome.
A choke valve assembly for controlling and reducing fluid pressure within a fluid conduit, the fluid flow choke valve assembly comprising:
- a fluid conduit;
- a choke mechanism within the fluid conduit for modulating fluid flow and creating a first fluid pressure reduction within the fluid conduit;
- and
- a flow restrictor located within the fluid conduit downstream of the choke mechanism for creating a fluid pressure drop within the fluid conduit, the flow restrictor having a generally cylindrical base and a dome projecting upwardly from a central portion of the base.
Dependencies are inferred from the claim text.