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Shell Subsea Control.pdf
- 1. Monitoring And Control Nice to have or necessity R.W.Dee Shell Technology Norway SPE – February - Oslo 2004
- 2. – Is it, Business as usual? • Satisfied with incremental development of current state of the art? – Or, Step change towards advanced functionality? • Maximise the implementation of modern control systems for subsea production systems. – Or, Something in between the above extremes? • Building on the past and selective implementation for the future Vision for the future
- 3. History – Subsea Industry Achievements • 1960’s – Hydraulic controls • 1970’s – TFL, wet and dry trees & manifolds, MUX EH controls • 1980’s – Remote intervention systems, integrated systems • 1990’s – Subsea pumps, subsea separation, fiber optic comms – Passed the 1500 meter water depth barrier • 2000 – 2010 – High availability >98% systems as a basis for subsea processing: Will remote monitoring achieve this?
- 4. The Market – Portfolio Driven Development HOLD DEEPWATER PROSPECTS The UMC Dimensions = 52m x 42m x 15m high Weight in-air = 2,200 tonnes
- 5. Subsea hardware , 7,500feet waterdepth
- 6. Framo Engineering Land based functionality on the seabed - A Realistic Vision? – Multiphase pumps • Well on the way – Subsea separators • An encouraging start – Subsea compressors • A long way to go, machine environmental control key issue – Remote control and monitoring • Accept time has arrived for subsea intelligence, local closed loops • Need for range of high integrity sensors and control system • All electric well with autonomous power generation – Remote intervention • Autonomous vehicles Operation Transportation Inspection AkerKvaerner/ Bornemann
- 7. Investment – Case for action Example: Subsea gas compression Corrib – Ireland Corrib subsea development • 7 wells • 350 m waterdepth • 1x20” 92 km PL to onshore plant • 7 MW onshore compr for dewpointing and export • plateau 350 MMscf/d 8 MW subsea compression • plateau 3 yr longer • UR +160 Bscf (= +18%) • increases flexibility of PL operation • REMOTE MONITORING!! Gas Booster Qualification JIP AkerKvaerner Separation + dry compression (centrifugal)
- 8. The System Approach – The Challenge Subsea to Beach - Application Novel Sensor Technology Measurement Requirements Wellstream characteristics Composition Water Cut CGR,LGR Pressure Temperature Sensor Technologies ? Quartz gauges (P,T) Fiber Bragg Gratings, Multiphase Flow Devices Pipeline Chemical injection unit Metered injection Control Unit Located on host Platform or subsea Algorithm for flow assurance management
- 9. Securing the Vision • Accelerating the progress over the last 40 years – Take advantage of global innovation • Recognising the competition for funds – Make the case compelling by designing the system to deliver the benefits • Taking advantage of ongoing developments – JIP promotion – Seeking venture capital – Proactively searching for implementation opportunities