Subsea wellhead system
Patent
·
OSTI ID:5513506
A method is described of completing an underwater well comprising the steps of: (a) locating drilling means at an underwater well site; (b) installing conductor casing in the floor of a body of water with a wellhead, blowout preventer stack, and riser attached thereto at a point near the floor, the riser extending upwardly to the drilling means; (c) running a drill string and standard 17 1/2 inch drill bit through the wellhead and conductor casing; (d) drilling a hole for suspending another casing within the wellhead and conductor casing; (e) lowering a hanger seat into the well until the seat lands in the wellhead; (f) rotating the hanger seat less than 360/sup 0/ to connect the hanger seat within the wellhead; (g) latching the hanger seat within the wellhead; (h) running a casing hanger with the other casing through the riser and into the wellhead; and (i) landing the casing hanger on the hanger seat.
- Assignee:
- Smith International, Inc., Newport Beach, CA
- Patent Number(s):
- US 4597448
- OSTI ID:
- 5513506
- Country of Publication:
- United States
- Language:
- English
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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-)
BLOWOUT PREVENTERS
DRILL BITS
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
HOISTING
INSTALLATION
MARINE RISERS
MATERIALS HANDLING
MOTION
NATURAL GAS WELLS
OFFSHORE DRILLING
OFFSHORE PLATFORMS
OIL WELLS
PIPES
ROTATION
SEA BED
WELL CASINGS
WELL COMPLETION
WELLHEADS
WELLS
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-)
BLOWOUT PREVENTERS
DRILL BITS
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
HOISTING
INSTALLATION
MARINE RISERS
MATERIALS HANDLING
MOTION
NATURAL GAS WELLS
OFFSHORE DRILLING
OFFSHORE PLATFORMS
OIL WELLS
PIPES
ROTATION
SEA BED
WELL CASINGS
WELL COMPLETION
WELLHEADS
WELLS