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Production, Processing, Transportation and Utilisation of Natural Gas Future Need for Information an

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Utilisation of NG similar to other chemical and energy production processes ... Many application areas for ICT within gas tecnology ... – PowerPoint PPT presentation

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Title: Production, Processing, Transportation and Utilisation of Natural Gas Future Need for Information an


1
Production, Processing, Transportation and
Utilisation of Natural Gas -Future Need for
Information and Communication Technology
  • Morten Hovd
  • Engineering Cybernetics Department
  • www.itk.ntnu.no
  • Gas Technology Center NTNU - SINTEF
  • www.ntnu.no/gass

2
Scope
  • Production, processing, transportation,
    utilisation of natural gas.
  • No attempt to cover petroleum prospecting or
    drilling
  • Utilisation of NG similar to other chemical and
    energy production processes
  • some of the needs for ICT will be similar
  • Abundant resources of natural gas
  • will surpass oil production within a decade
  • Mostly exported
  • low degree of processing limits added value
  • Political / environmental issues

Background
3
Many challenges
  • Improved understanding of basic phenomena
  • New products and new/improved production
    processes
  • Improved operation and control
  • Improved basis for investment decisions
  • Research, engineering, operations,
  • Off-line
  • On-line
  • real time
  • feedback

Application scenaria for ICT
4
Application areas
5
Process design - present
  • Specified production capacity of specified
    product
  • Design focus
  • economy, flexibility, operability
  • environment, health safety
  • A few readily accessible tools
  • pinch curve in heat integration
  • process flowsheeting and simulation programs
  • More general approaches lead to very complex
    problems
  • MINLP optimisation problems

6
Process and product design - future(?)
  • Specifications on
  • end-use properties of product (strength, abrasion
    resistance, electrical conductivity,)
  • properties related to subsequent processing
  • properties related to recycling/disposal
  • Severely complicates an already difficult problem
  • Connections between microscopic phenomena and
    macroscopic properties
  • two-way communication between different model
    scales

7
Process operations
  • Wide range of time scales
  • from fractions of a second to months
  • Short time scales
  • from fractions of a second to (a few) minutes
  • safety and control systems
  • Long time scales
  • from days to months
  • production planning, supply chain management
  • Intermediate time scales
  • from minutes to days
  • interface between business and plant
    operations
  • complex problems, but significant time for
    calculations

8
Operator support
  • Supporting decision making by human operators
  • what if-analysis using simulation
  • advance warning of developing problems
  • documentation and operational procedures
    available on demand
  • navigating historical data (what happened last
    time?)
  • data analysis to identify poorly functioning
    equipment or control systems

9
Enabling Technologies
10
Instrumentation
  • Measurements and actuators
  • Critical elements in system monitoring and
    control
  • Many challenging applications
  • downhole, subsea, chemical processes
  • Reliability
  • maintenance is extremely costly or even
    impossible
  • Communication and energy supply

11
Communication
  • Another critical technology area with many
    challenging applications
  • Number of signals and cables
  • practical and safety issues in wireless
    communication
  • Challenging locations and environment
  • downhole
  • subsea
  • inside transmission pipelines

12
Modelling
  • Models needed in all types of advanced plant
    design, optimisation, monitoring and control
  • Developing, verifying and maintaining models a
    major cost in many applications
  • tools available for linear systems
  • Need effective tools for
  • developing rigorous models
  • parameter fitting and model verification for
    non-linear models
  • model reduction for complex models
  • both ODE- and PDE-based models

13
Simulation
  • Large scale problems
  • Exploitation of system structure
  • Massive amounts of data
  • large-scale simulations
  • on-line data from production plants
  • Effective visualisation required to interpret and
    draw conclusions from the data

Visualisation
14
Optimisation
  • Many application areas
  • investment decisions, supply chain management,
    production planning, monitoring and control
  • Problems and requirements vary with application
  • computational time and complexity (on-line and
    off-line)
  • reliability
  • ability to analyse the effects of uncertainty

15
Control
  • Makes active use of instrumentation,
    communication, modelling, simulation and
    optimisation
  • But more than an aggregate of other technologies
    Feedback can fundamentally change the behaviour
    of a system
  • slugging flow in pipelines
  • unstable gas-lifted wells
  • compressor surge
  • Many research issues
  • control structure design
  • stability of constrained, non-linear, and/or
    hybrid control systems
  • robustness to model uncertainty
  • reducing on-line computational requirements

Stabilised using feedback control
16
MEMS technology
  • Potentially very interesting, but not much
    explored in the context of gas technology
  • Aerospace active skins for minimising drag on
    surfaces
  • impeller blades in compressors?
  • transmission pipelines?
  • Many applications where distributed sensing would
    be useful
  • reliability, harsh environments
  • communication and operating energy

17
Conclusions
Instrumentation, communication, storage
Displays, VR,
Design, operation, modification
Mathematical tools, human decision making
Instrumentation, communication, storage
(documentation). Feedback?
18
Conclusions
  • Many application areas for ICT within gas
    tecnology
  • Many engineering disciplines involved in gas
    technology
  • with different needs for ICT
  • In many cases, domain-specific knowledge is
    crucial for the successful application of ICT
  • some knowledge of ICT is essential for
    recognising potential applications
  • The need for ICT is recognised by NTNUs
    traditional engineering departments
  • but ICT is not an end in itself, but means to
    solve engineering problems
  • does not reduce the need for understanding the
    engineering problem
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