Evaluation of Smart Well Technology for the Rosetta Phase II Development

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

• Introduction
• Completion options
• Reservoir simulation results
• Reliability and Risk analysis
• Conclusions

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Rashid Gas Field
SUBSEA DEVELOPMENT?
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Well Completion Options
Conventional - platform
Conventional - subsea
Smart platform or subsea
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Target Reservoirs and Wells
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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

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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

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Well Cost, Risk and Exposure
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Production and Construction Risk
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Intervention and Lost Production Risk
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SSD / ICV and Gravel Pack Risk
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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)