types of platforms used in offshore rigs , their functions, cost associated,advantage and disadvantage

1. TYPES OF PLATFORM USED IN
OFFSHORE RIGS

2. FLOATING VESSEL

3. DRILL SHIPS

4. DRILL SHIPS
• The drillship can be used as a platform to
carry out well maintenance or completion
work such as casing and tubing installation,
subsea tree installations and well capping.
Drill ships are often built to the design
specification to meet the requirements set by
the oil production company
• Drill ships have the functional ability of
semi-submersible drilling rigs and also have a
few unique features that separate them from
all others.
• First being the ship-shaped design. A drillship
has greater mobility and can move quickly
under its own propulsion from drill site to
drill site in contrast to semi-submersibles and
jack up barges and platforms.
Transocean Pride International Seadrill Noble
Corporation Atwood Oceanics Opus Offshore and
Pacific Drilling are a few of the companies that own
and operate drill ships globally.

6. JACK UPS

7. CONVENTIONAL FIXED PLATFORMS

8. COMPLAINT TOWER

9. COMPLAINT TOWER PLATFORM

10. GRAVITY BASED STRUCTURE

12. DRILLING BARGES