Well tubing hanger sealing assembly
This patent describes a tubing hanger sealing system. It includes a substantially cylindrical tubing head having a flange at each end, a substantially vertical longitudinal bore therethrough and a groove in the upper portion of the inside diameter of the substantially vertical longitudinal bore; a substantially cylindrical tubing hanger with a longitudinal bore therethrough for communicating with a tubing string, the substantially cylindrical tubing hanger having a plurality of anti-rotational knobs on the exterior thereof; a substantially cylindrical drive sleeve having threads on the lower inside portion thereof, the drive sleeve constructed and arranged to engage, in a threaded relationship, with the tubing hanger, the substantially cylindrical drive sleeve further having a larger upper outside diameter and a smaller lower, outside diameter, the outside diameters being separated by an inwardly slopping shoulder; a substantially circular load ring having a smaller upper inside diameter and a larger lower inside diameter, the diameters separated by an inverted shoulder, the inverted shoulder having a plurality of slots on the underside thereof, the slots constructed and arranged to engage the anti-rotational knobs.
- Assignee:
- Cooper Industries, Inc., Houston, TX (United States)
- Patent Number(s):
- US 5070942; A
- Application Number:
- PPN: US 7-577666
- OSTI ID:
- 5651977
- Country of Publication:
- United States
- Language:
- English
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