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Petroleum Engineering 406 Offshore Drilling Special Problems Rigs

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Title: Petroleum Engineering 406 Offshore Drilling Special Problems Rigs


1
Petroleum Engineering 406 Offshore Drilling -
Special Problems - Rigs
2
Drillship R.F. Bauer Global Marine WD 2000'
3
NOTE API RP 2P has different force equations
Fig. 11 - Example Analysis Wind Areas
4
Vessel
Hydrophone signal
Hydrophones
Beacon- signal transmission
Wellhead position
Ship position
Wellhead assembly
Position Indicating Display
Short base Line phase comparison system
Sea bottom
Acoustic Position Reference System. Source
Honeywell
5
Tilt Indicator for Guide Structures
May be mounted on temporary guide base. View with
camera. Start hole within 1/2 deg. of vertical.
6
Offshore Drilling Structures
  • Offshore Drilling Structures
  • Fixed
  • Floating
  • Tension Leg

7
Can be up to 10 miles 20 miles 200 ft
Ice Floes in the Beaufort Sea
It is a good idea to get out of the way when one
of these babies comes along! Glory Hole may be
needed
8
WL
ML
Spud Cans
Platform Piles
Typical Jack-up Platform layout
9
(No Transcript)
10
Noble Drillings Cecil Forbes A Jack-Up Rig
11
Shells Cognac Conventional 20-well
Platform Wells are directionally drilled
12
Shells Bullwinkle Worlds tallest offshore
structure 1,353 water depth Production began
in 1989 45,000 b/d 80MM scf/d
13
Small concrete monotower concept
Concrete Monotower Concept Gravity Structure
14
Several guy wires and clump weights support a
compliant platform.
Guy wires
15
Main Deck
Column
A semisubmersible floats below the waterline when
drilling
16
(No Transcript)
17
Sonats George Washington
A Semi-Submersible Rig
18
Zapatas Trader A Drillship
19
Joides Resolution Ocean Drilling Program
20
Production Platform
Several tensioned tubes hold a tension-leg
platform on station.
Steel Tubes
21
(No Transcript)
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