EXTREME OIL RIG
• An oil rig, is a large structure with facilities to
drill wells, to extract and process oil and
natural gas, and to temporarily store product
until it can be brought to shore for refining
• Depending on the circumstances, the platform
may be fixed to the ocean floor, may consist of
an artificial island, or may float.
Types of Off Shore Oil Rig
• Jack up
• Fixed rig
• Drill ships
• Hull built in Dalian China.
• First stage outfitting in Pascagoula, Mississippi.
• Final outfitting: Halifax Shipyard, Nova Scotia, Canada
• Upgraded in Ølen Norway.
• Dimension : length 119.38m , width 85.50m.
• Additional winterization.
• Eirik Raude has drilled 28 deepwater wells, 9 of these
in harsh environment.
• Torbrook C – 15, Canada , water depth 1674m.
OVERALL CONFIGURATION OF
• EIRIK RAUDE is the latest 5th generation semi-submersible
floating rig, which capable to drill well not just in deep water
but ultra deep water.
• Its name is based on the person named ‘EIRIK THE RED’ who
discovered ICE LAND.
• First voyage starts from ‘HALIFAX HARBOUR’,CANADA and drill
its first well at east cost of Canada at Nova Scotia.
• Normal oil rigs can drill about 4000 feet but EIRIK can drill
• From sea bed EIRIK can drill 20,000 feet through the earth.
• Not fixed to ocean floor but float on two massive submerged
• The system of 6 giant thruster hold the rig while drilling using
special system called DYNAMIC POSITIONING (DP).
• For monster rig like EIRIK has a four 22 ton
• So, need a tug to release each anchor from a
• It’s a slow process takes nearly 2hrs to lift each
• It is design to survive worst kind of weather.
• A hurricane force 12.
• Winds over 80 miles/hr.
• Wave up to 70 feet.
REASON BEHIND THIS INVENTION
• As we burn away more of the fossil fuel,
exploration of oiling gas is moved from land to
• Insecurity feel by oil company to fill
• Due to limited length of leg of short oil rig
unable to fixed in deep water.
• 6 thruster each driven by gigantic electric motor.
• Max. 750 rpm of shaft.
• If all 6 thruster can run with full power ,EIRIK could produce
600 tonne of thrust & would use 16,500 gallons of fuel a
• At top speed of 7 miles/hr gulp 1000 gallons of fuel/mile.
• So, it is also a huge guzzler of oil.
• It uses the system called DYNAMIC POSITIONING (DP) to
hold its place above the well.
• DP uses 6 global positioning satellite at a time to find out
exactly where it is.
• This system is so powerful that EIRIK hold its position within
a feet even in 52 foot wave & 60 mile/hr winds.
Eirik Raude Thrusters
4 Blade, modified Kaplan
Max RPM 157
Thrust 100 ton each
ROV CONTROL ROOM
• Small submarine called ‘REMOTELY OPERATED
VEHICLE’ which is used to keep eye on
advancement underneath the sea.
• Normal ROV operate upto 4000 feet but
EIRIK’s ROV can operate about 12000 feet.
• In any rig the heart of operation is the drill floor.
• First step is to drill a pilot well by using 12inch bit
& to check dangerous gas leak & then 42 inch bit
for main drill.
• Section consists of drill bit motor & sensors.
• More than 24hrs to lower 66 section of pipe to
reach the sea bed 6000 feet below.
• It is situated at front of the rig as far as possible from the danger
• Because drill floor is at the center of rig.
It contains :
• 11 OFFICES
• AND EIRIK’S OWN HOSPITAL
• 140 ER PERSONS TOTAL CAPACITY
• GALLEY AND MESS HOUSE
• DAY ROOM NONE SMOKING & DAY ROOM SMOKING
• TV LOUNGE SMOKING &NON SMOKING
• It’s a huge gamble which cost them a quarter
of million US $/day, i.e drilling is very
• So geologist take seismic data using survey
• And using these data , careful planning is done
using 3D simulation at NORWAY UNIVERSITY
OF SCIENCE & TECHNOLOGY.
• Special ships equipped with air guns to produce shock waves and
reflections are captured by hydrophones (geophone).
• The speed and strength of the reflected waves depends on the
density of the strata they encounter. Rock becomes denser the
deeper underground it is located, but pockets of gas and oil have a
much lower density. The denser the material is, the faster the waves
will be reflected.
• As the seismic waves encounter lower density materials, more of
their energy passes through.
• By analyzing the time it takes for the waves to be reflected, geologists
can build an accurate image of the subsoil by using 3D seismic
• Analysis of the seismic data provides vital information on petroleum
geology of the area of interest.
• This information can tell us the possibility of hydrocarbon reserve.