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AssigneeWeatherford Technology Holdings, LLC
InventorTuong T. LE
Estimating the term…
Conveying a replaceable assembly between latched and unlatched configurations with an outer housing can include connecting the replaceable assembly to a running tool, so the assembly can be conveyed with the running tool, and disconnecting the assembly from the running tool. At least one of the connecting and disconnecting steps can include actuating an iris mechanism. A pressure control device can include an annular seal and a latch that releasably secures the annular seal relative to an outer housing, the latch including a grip member that grips a surface and prevents relative rotation. Another pressure control device can include an annular seal connected to and rotatable with an inner mandrel, and a bearing that permits relative rotation between the annular seal and the outer housing. A structure rotates with the inner mandrel, the structure including a flow inductive profile exposed to a bearing lubricant flow path.
1-6. (canceled)
A pressure control device, comprising:
A pressure control device, comprising:
The pressure control device of claim 21, wherein the flow inductive profile comprises vanes on the inner mandrel.
The pressure control device of claim 21, wherein the flow inductive profile comprises a helical profile disposed in an annular section of the lubricant flow path.
The pressure control device of claim 21, wherein the lubricant flow path is in communication with a lubricant chamber in which pressure is maintained greater than pressure in the longitudinal passage.
The pressure control device of claim 21, further comprising an iris mechanism that selectively permits and prevents relative longitudinal displacement in at least one direction between the annular seal and a running tool.
(canceled)
Dependencies are inferred from the claim text.