Guidelineless reentry system with nonrotating funnel

Patent · Tue Apr 25 04:00:00 EDT 1989

OSTI ID:5789399

Brammer, N; Jennings, C E

An apparatus is described for connecting a riser extending from a floating vessel to a subsea well assembly of the type having an upward extending tubular mandrel, comprising in combination: a guide frame mounted to the mandrel; a guide ring mounted to the guide frame, encircling the mandrel and extending upward from the guide frame; a mandrel connector mounted to the lower end of the riser for landing of the top of the mandrel to communicate the interior of the mandrel with the interior of the riser; connector means carried by the mandrel connector for engaging the sidewall of the mandrel to secure the mandrel connector to the mandrel; a downward facing guide funnel carried by the riser for insertion over the mandrel into engagement with the guide ring, the riser and mandrel connector being rotatable relative to the funnel; a plurality of latches mounted to the funnel for movement between a locked position locking the funnel to the guide ring and a retracted position; and cam means carried by the funnel for moving the latches between the retracted and locked positions, the cam means being vertically movable relative to the funnel and in unison with the mandrel connector, the mandrel connector being rotatable relative to the cam means and to the funnel.

• Assignee: Vetco Gray, Inc., Houston, TX
• Patent Number(s): US 4823829
• OSTI ID: 5789399
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
423000 -- Engineering-- Marine Engineering-- (1980-)
EQUIPMENT
MARINE RISERS
MATERIALS HANDLING
MATERIALS HANDLING EQUIPMENT
MECHANICAL STRUCTURES
NATURAL GAS WELLS
OFFSHORE PLATFORMS
OIL WELLS
PIPES
SLEEVES
SUPPORTS
TOOLS
WELLS