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Jackup Strategy Richard Roper
Sr. Director – Capital Projects
April 11, 2012
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0
20
40
60
80
100
120
Jackup Orders
Indep. Leg JU Mat JU
Jackup Strategy
Build Boom Early 80’s
Followed by Recession
Next Build Boom
Financial Crisis
Continuation of Build Cycle
Source: ODS-Petrodata
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Jackup Strategy
• New construction
– Design for maximum prospectivity
• Measured by North Sea “area of operability”
– With step changes
• Environmental resistance
– Operating area in North Sea
» By-products
• Deepwater West Africa
• Hurricane survivability
• Drilling capacities
• Handling
• Ergonomics
– At maximum value for money to clients / R.O.I. to Ensco
• Deliver much more capacity than similarly priced equipment
• Compete head-to-head w/ much more expensive equipment
– While retaining competitive edges long-term
• Cantilever patent
• Exclusive new design
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ENSCO 120 Series Jackups
Main Dimension
Length 246 ft
Breadth 250 ft
Depth 31 ft
Leg Spacing 156 ft trans. X 150 ft long.
Legs 3 x 540 ft
Chord Spacing 45 ft
Cantilever Envelope Max 80 x 32 ft
Capabilities
Variable Deck Loading 14,300 kips
Liquid Mud 7500 bbls
Derrick 2.5 mil pound
Mooring 4 x 45mt
Helideck (CAP 437) 12.8 mt
Accommodation 150 person
* Operable in Danish, Dutch and UK sectors (Norway excluded)
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North Sea Areas of Operability by Design N
. S
ea
A
rea
s o
f O
pera
bili
ty (
km
^2)
200000
250000
300000
350000
400000
450000
500000
Hard Soil
Soft Soil
Ultra Harsh Harsh Environment Non-Harsh
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Expanded North Sea Operability
ENSCO 120 Series North Sea Operability Map
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Hurricane Survivability – Assessment Results
0 50 100 150 200 250 300
E75
E105
E120
60
78
91
88
112
138
15
50
300
GOM Hurricane Survivability - "High" Fixity Case
Return Period of Survivability(yrs)
Wind Speed (knts)
Hmax (ft)
Circa. 2000
Design B
Circa. 2000
Design A
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Step Change Improvements
vs. Current Fleet
Major Items
• Hoisting = 2.5M# (1st) vs. 1.5M# on most rigs (2M# on ENSCO 109)
• Derrick = quad vs. triple racking capacity: 10,000’ 6-5/8”, 25,000’ 5-7/8”, 12 stands – 9-1/2” DCs, 7000’ 13-3/8” casing or 10,500’ 9-5/8” casing or 13,000’ 7” casing
• Drill floor = double offset (7.5’ aft & 2’ trans.) vs. conventional on center
• Drill floor redundancy = elev. cabin & 2x ST160’s w/ PRS-6i
• BOP/ tree handling – dual BOP / tree carts, utility bridge crane, fork lift BOP bridge crane.
• Cantilever (Ensco IP @ 80’ reach, 17’ transverse, >2.4M# ) (patents filed)
• Knuckle boom crane + catwalk machine vs. conventional V-door ops.
• Elevating pinions = 54 vs. 36 (1000k normal/ 1300k preload)
• 7500 bbls liquid mud vs. 5000 bbls
• POB = 150 vs. typical 120
• Davit-launched rescue boat
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E120 - Step Change in Cantilever Load
Cantilever load chart with Ensco IP
Cantilever load chart without Ensco IP
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Wider/Deeper Drilling Capabilities
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ENSCO 120 fly-around
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ENSCO 120 Stand Building Animation
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ENSCO 120 Tripping In Animation
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North Sea Areas of Operability by Design N
. S
ea
A
rea
of O
pera
bili
ty (
km
^2)
200000
250000
300000
350000
400000
450000
500000
Hard Soil
Soft Soil
Ultra Harsh Harsh Environment Non-Harsh
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Ultra-Harsh Environment Jackup Design
ENSCO 130 Series
Main Dimension
Length 266 ft
Breadth 308 ft
Leg Spacing 185 ft trans. x 160 ft
long
Depth 37 ft
Leg length 3 x 600 ft
Chord spacing 54 ft
Cantilever Envelope Max 90 x 40 ft
Capabilities
Harsh Environment Water Depth 430’
Mild Environment Water Depth 560’
Variable Deck Loading 14,300 kips
Liquid Mud 7500 bbls
Derrick 2.5 mil pound
Mooring 4 x 45mt
Helideck (CAP 437) 12.8 mt
Accommodation 150 single man cabins
* Operable in Danish, Dutch and UK sectors (Norway excluded)
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ENSCO 130 Particulars
Major Items
• Hoisting = 2.5M#
• Derrick = quad racking
• Drill floor = double offset (7.5’ aft & 2’ trans.)
• Drill floor redundancy = elev. cabin & 2x ST160’s w/ PRS-6i (or 2x)
• BOP/ tree handling – dual BOP / tree carts, utility bridge crane, fork lift BOP bridge crane.
• Cantilever (Ensco IP @ 90’ reach, 22’ trans., >500k. ) (patents filed)
• Knuckle boom crane + catwalk machine
• Elevating pinions = 72
• 7500 bbls liquid mud vs. 5000 bbls
• POB = 150 single man cabins/ semi-private T&S
• Davit-launched rescue boat
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ENSCO 130 Series – North Sea
• ENSCO 130 Series
– Capable of working to 60 deg. N
– Block 9
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• Rig : E130 Series
• Criteria : SNAME
• Hard soil : 131 m - approximate area with water depth < 131m : 438 540 km²
• Soft soil : 120 m - approximate area with water depth < 120m : 415 160 km²
ENSCO 130 Series
North Sea Operability
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Summary
• All objectives of JU strategy have been / are being achieved
– Max. prospectivity
– With technical step changes
– At max. value for money/ROI
– While retaining competitive edges long-term
• ENSCO 120 Series represents a step-change in:
– Harsh environment area of operability
– Hurricane survivability
– All drilling capacities
– Handling
– Ergonomics
• ENSCO 130 is a potentially strategic leverage of the successful JU
strategy resulting in E120 Series.
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