Method and apparatus for performing wireline operations in a well
Patent
·
OSTI ID:5534402
This patent describes an apparatus for performing wireline operations in a well near the surface of which is a blowout preventer stack, the apparatus comprising: a bell nipple assembly extending upwardly from the blowout preventer stack including an annular flange member by which the bell nipple assembly is attached to the blowout preventer stack and a tubular member extending upwardly from the flange member, the flange member having a central bore therein through which fluid communication may be established between the blowout preventer stack and the tubular member, the bore being provided with an upwardly facing annular support shoulder; and a wireline lubricator assembly for central disposition within the bell nipple assembly including a centrally bore tubular mandrel the exterior of which is provided with a downwardly facing annular support surface engageable with the upwardly facing shoulder of the bell nipple flange member to support the lubricator assembly, a lower tubular extension attached to the mandrel and extending into the blowout preventer stack and an upper tubular extension attached to the mandrel and extending upwardly through the bell nipple tubular member for connection with a wireline lubricator, fluid communication being established between the interiors of the upper and lower tubular extensions through the bore of the mandrel, the mandrel also being provided with at least one passageway through the body thereof to establish fluid communication between annular spaces surrounding the upper and lower tubular extensions.
- Assignee:
- Southland Rentals Inc., Houma, LA
- Patent Number(s):
- US 4836289
- OSTI ID:
- 5534402
- Country of Publication:
- United States
- Language:
- English
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