Jackup Strategy Richard Roper Sr. Director Capital Projects April 11, 2012 1
Jackup Strategy 120 Jackup Orders 100 80 Build Boom Early 80 s 60 40 Followed by Recession Next Build Boom Continuation of Build Cycle Financial Crisis 20 0 Indep. Leg JU Mat JU 2 Source: ODS-Petrodata
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 3
ENSCO 120 Series Jackups Main Dimension Length Breadth Depth Leg Spacing Legs Chord Spacing Cantilever Envelope 246 ft 250 ft 31 ft 156 ft trans. X 150 ft long. 3 x 540 ft 45 ft Max 80 x 32 ft Capabilities Variable Deck Loading Liquid Mud Derrick Mooring Helideck (CAP 437) Accommodation 14,300 kips 7500 bbls 2.5 mil pound 4 x 45mt 12.8 mt 150 person * Operable in Danish, Dutch and UK sectors (Norway excluded) 4
N. Sea Areas of Operability (km^2) North Sea Areas of Operability by Design 500000 450000 400000 350000 300000 250000 Hard Soil Soft Soil 200000 Ultra Harsh Harsh Environment Non-Harsh 5
Expanded North Sea Operability ENSCO 120 Series North Sea Operability Map 6
Hurricane Survivability Assessment Results GOM Hurricane Survivability - "High" Fixity Case 300 E120 138 91 Return Period of Survivability (yrs) Circa. 2000 Design E105 B 50 78 112 Wind Speed (knts) Hmax (ft) 15 Circa. 2000 E75 Design A 60 88 0 50 100 150 200 250 300 7
Major Items Step Change Improvements vs. Current Fleet Hoisting = 2.5M# (1 st ) 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 8
E120 - Step Change in Cantilever Load Cantilever load chart with Ensco IP Cantilever load chart without Ensco IP 9
Wider/Deeper Drilling Capabilities 10
ENSCO 120 fly-around 11
ENSCO 120 Stand Building Animation 12
ENSCO 120 Tripping In Animation 13
N. Sea Area of Operability (km^2) North Sea Areas of Operability by Design 500000 450000 400000 350000 300000 250000 Hard Soil Soft Soil 200000 Ultra Harsh Harsh Environment Non-Harsh 14
Ultra-Harsh Environment Jackup Design ENSCO 130 Series Main Dimension Length Breadth Leg Spacing Depth Leg length Chord spacing Cantilever Envelope 266 ft 308 ft 185 ft trans. x 160 ft long 37 ft 3 x 600 ft 54 ft Max 90 x 40 ft Capabilities Harsh Environment Water Depth 430 Mild Environment Water Depth 560 Variable Deck Loading Liquid Mud Derrick Mooring Helideck (CAP 437) Accommodation 14,300 kips 7500 bbls 2.5 mil pound 4 x 45mt 12.8 mt 150 single man cabins * Operable in Danish, Dutch and UK sectors (Norway excluded) 15
Major Items ENSCO 130 Particulars 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 16
ENSCO 130 Series North Sea ENSCO 130 Series Capable of working to 60 deg. N Block 9 17
ENSCO 130 Series North Sea Operability 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 18
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. 19
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