Upper marine riser package

Patent · Tue Dec 15 04:00:00 EST 1987

OSTI ID:5451844

Lim, J S; Jones, D L

An upper marine riser package, operable from a relatively moveable structure, such as on a floating vessel which is subject to movement by wave action and the like, and adapted to be connected and lowered through a confined opening such as a rotary table in the vessel and supportable on a diverter housing on the vessel is described comprising: a diverter for diverting drilling fluid and gas from a subsea, well, a tilting means connected to the diverter to allow tilting movement between the diverter, diverter housing, vessel and the remainder of the package, a slip joint with riser tensioning means forming part thereof connected to the tilting means to compensate for vertical movement between the well and the vessel. The slip joint comprises an inner barrel and an outer barrel. The inner barrel being sized to telescope within the outer barrel and further including means supporting the inner barrel with respect to the diverter housing, and cylinder assemblies connected to the support means and to the outer barrel and subject to the fluid pressure within the cylinder assemblies to compensate for vertical motion of the vessel. A rotation bearing is connected to part of the slip joint to allow rotational movement between the well and the part. The package is connectable to a string of risers and lowered through the confined opening and the diverter housing and to a source of air and fluid under pressure for operating the package.

• Assignee: Vetco Gray Inc., Houston, TX
• Patent Number(s): US 4712620
• OSTI ID: 5451844
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
DEGASSING
DESIGN
DRILLING FLUIDS
FLUID MECHANICS
FLUIDS
HYDRAULICS
JOINTS
MARINE RISERS
MECHANICS
NATURAL GAS WELLS
OFFSHORE PLATFORMS
OIL WELLS
OPERATION
PIPES
SHIPS
TELESCOPES
WELLS