1. Evaluation of Smart Well Technology for the Rosetta Phase II Development
Gerard Mulder
Smart Wells Global Implementation Leader,
Shell International E&P B.V.
FORCE Seminar on Advanced Wells,
21 April 2004, Stavanger
First presentation at OMC 2003, Ravenna, March 26, 2003

2. Contents Introduction Completion options Reservoir simulation results
Reliability and Risk analysis
Conclusions

3. Rashid Gas Field Rashid-3 Rashid-1 Rashid-2 Development lease 25 Km
NOT NORMALLY MANNED PLATFORM
6 PRODUCERS
MINIMUM FACILITIES
WHP
4 PRODUCERS ?
24”TWO PHASE EXPORT LINE
TO ROSETTA PRODUCTION FACILITY
10KM 20” INFIELD LINE
SUBSEA
DEVELOPMENT?

4. Conventional - platform Smart – platform or subsea
Well Completion Options
Conventional - platform
Conventional - subsea
Smart – platform or subsea

5. Target Reservoirs and Wells
Conventional wells
Smart wells
Rashid-1
D1, D
1 two-zone selective
Rashid-2
F2, F1, F
3 single-zone
2 three-zone selective
D1, D, C
1 three-zone selective
Rashid-3
1 or 2 single-zone OR
1 two-zone
non-selective

6. Reservoir Simulation Results
Uncontrolled commingling of multiple reservoirs is not recommended; control/selectivity is required to:
Avoid potential cross-flow
Shut-in water producing reservoirs
Comparison Smart versus Conventional:
Rashid-1: similar recoveries
Rashid-2: 2 Smart wells on F-sands give similar recoveries as 3 conventional wells
Rashid-3: Smart well recovers 16-23% more gas

7. Reliability and Risk Analysis
Establish a life-cycle plan for each well and completion option (construction  production  abandonment)
Consider each individual step and element in detail, and
Perform a failure mode analysis - identify causes, effects, probabilities and consequences
Calculate risk (RMA/FMECA)
Calculate “risk-Dollars”
Identify and rank critical issues

8. Well Cost, Risk and Exposure

9. Production and Construction Risk

10. Intervention and Lost Production Risk

11. SSD / ICV and Gravel Pack Risk

12. Conclusions Commingling requires flow control
Risk and reliability analysis allows:
Identification of dominant risks
Quantitative comparisons between the options
Smart wells offer attractive Phase II development opportunity (considering recovery and risked costs)