igu, woc2 underground gas storage triennial work programme proposal vladimír onderka (rwe transgas...
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IGU, WOC2Underground Gas Storage
Triennial Work Programme Proposal
Vladimír Onderka
(RWE Transgas Net, The Czech Republic)
February 26 - 28, 2006 Madrid, Spain
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1. Administration, Meetings,..
2. Actual tasks of UGS industry
frequent/permanent tasks
3. Preliminary Study Topics
4. Technical Venues, Workshops
5. Other Proposals, Improvements
3RWE Transgas Net Madrid, 26-28 February 2006
Incoming WOC2 Chair: Vladimír Onderka,
Incoming WOC2 ViceChair: Héléne Giouse (GdF)
Incoming WOC2 Secretary : Petra Grigelová
Administrator: Olga Solaříková
Location: RWE Transgas Net, s.r.o. V Olšinách 75/2300 PO BOX 166 100 00 Prague 10, The Czech Republic
1. ADMINISTRATION 2006 - 2009
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Administrationaccording to WOC 2’s best tradition:
− Two meetings per year
− Workshops related to each meeting
− Joint workshops with WOC1, PGC A, PGC B
− Obtaining WOC 2 members from USA, South America……
− Cooperation with AGA, national gas bodies, SPE…etc
− Kick off WOC 2 meeting after Amsterdam WGC: Prague, September 2006,
date - to be defined
− Other meetings:
− (Candidates: Netherlands, Russia,….)
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Communication:
– www.igu.org
– fax/phone
– phone conferences
– meetings (WOC, SG´s, workshops)
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ICT tools, state of the art techniques.
Reservoir optimization, increasing the range of working pressures, increasing production/injection rates.
Technology improvement, fast swaps production/injection, data management regarding TPA.
Optimizing manpower and maintenance.
On-line optimization, simulation/artificial intelligence.
Geosciences and reservoir engineering
Remote control.
2. ACTUAL TASKS FOR UGS INDUSTRY - frequent/permanent tasks
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SCADA systems Modular instrumentation and control systems, e.g. Distributed Control Systems (DCS) Total system management (pipelines, compressor station, UGS) Systems for optimizing the UGS facility, incuding subsurface/surface modelling Expert systems Customer Information System (CIS)
ICT PURPOSE EFFECT TARGET
Scada systems - Base for system simulation- Control transport and UGS systems- Contract control
- Optimize UGS operation - Optimize the safety of UGS by human interfaces supervision system
Storage simulation
(reservoirs, caverns)
- Realizing the full potential of UGS (volume, rates), reservoir & surface simulation
- Optimum UGS design & number of wells and designs, technologies
- Optimize UGS operation - Optimize UGS investment
GIS
(Geographical Information System)
- Strategic and management tool - Information system, e.g. for TPA
- Optimize UGS operation
Expert System
(Artificial intelligence)
- On-line continuous optimization - Increasing efficiency of UGS
- Optimize UGS operation
Automation -Remote control UGS - Save man power- Save costs
- Optimize UGS operation- Unmanned operation- Monitoring
e.g. - ICT – Standard environment?
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seconds minutes – hours 1 hour - 1 day 1 month – 1 year (cycle)
Data Buffer ?Ex System
Control ModuleShort-Term
UGS SCADA System
NN Proxy
MBI Proxy
Simulation
Surveillance and Reporting Modules
Database
Network Modelling
Workflow Design and Automation
© 2004 Schlumberger Information Solutions. All rights rerved.
e.g. iUGS - UGS expert systems – is it ready and interesting?
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Geosciences and reservoir engineering
Regarding the size and containment of the structure: reservoir monitoring by use of 3D or 4D seismic, use of attributes in order to get a more reliable image of the reservoir and thereby optimizing working gas and minimizing cushion gas and non recoverable gas.
Distribution of gas saturation.
Design of optimum wells and well patterns based on simulation.
Managing reservoir fluids and gas quality by using tools capable of simulating fluid flows in the reservoir, possibly also capable of simulating mixing of different gases.
Rock mechanics – stress and strain simulation in rock caverns.
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Technology improvements
Large well bore drilling and completion: completion systems with large inner bore diameters to allow high withdrawal rates due to reduced friction losses in the tubing.
Stimulation and hydraulic fracturing of wells.
Highly deviated wells, allowing clustering of wellheads.
Horizontal wells, allowing improved reservoir drainage and flow rates.
Expanding existing UGS by increasing withdrawal rates, adding wells, adding facilities, increasing reservoir pressure, and decreasing existing flow limitations.
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3. STUDY TOPICS PROPOSAL
2.1. UGS Database:
continuity in database development
enlarging database, eg:
» eruption events
» emergency events
» remediation
» split between oil and gas fields
» incorporation of pipeline systems related to UGS
» national trends of UGS industry
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2.2. UGS Technology Improvements
Horizontal drilling and long-term stability of wellsFormation Damage mechanisms, such as salt, scales,
lubricants and corrosion inhibitors. What are the most serious problems in the various regions
of the world, and what remediation practices are usedWell Bore Integrity: What tools are used for
determination. New Technologies in downhole logging,
mechanical integrity testing, etc.
Cement bonding and how it relates specifically to gas
storage wells. Cement deterioration and determination if it
occurs.
Investment savings – alternative cushion gases etc.
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2.3. Intelligent UGS
Automation in dataflow from Scada and continuos analyses and process evaluation
Artificial intelligence and data mining
On – line coupled surface/reservoir simulation
Cost savings
TPA and capacity nomination
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4. Technical venues, workshops
Workshop Topics
– Sequestration of CO2
– iUGS, emerging technologies, ICT
– Best practices in UGS development/optimization
– First experiences from unbundling
– Stategic reserves and legislation (Europe)
– Case studies
– News in geosciences and reservoir engineering
approaches
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5. Other Proposals, Improvements ???
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Thank you for your attention!