IGU, WOC2Underground Gas Storage

Triennial Work Programme Proposal

Vladimír Onderka

(RWE Transgas Net, The Czech Republic)

February 26 - 28, 2006 Madrid, Spain

2RWE Transgas Net Madrid, 26-28 February 2006

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

4RWE Transgas Net Madrid, 26-28 February 2006

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,….)

5RWE Transgas Net Madrid, 26-28 February 2006

Communication:

– e-mail

– www.igu.org

– fax/phone

– phone conferences

– meetings (WOC, SG´s, workshops)

6RWE Transgas Net Madrid, 26-28 February 2006

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

7RWE Transgas Net Madrid, 26-28 February 2006

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?

8RWE Transgas Net Madrid, 26-28 February 2006

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?

9RWE Transgas Net Madrid, 26-28 February 2006

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.

10RWE Transgas Net Madrid, 26-28 February 2006

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.

11RWE Transgas Net Madrid, 26-28 February 2006

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

12RWE Transgas Net Madrid, 26-28 February 2006

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.

13RWE Transgas Net Madrid, 26-28 February 2006

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

14RWE Transgas Net Madrid, 26-28 February 2006

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

15RWE Transgas Net Madrid, 26-28 February 2006

5. Other Proposals, Improvements ???

16RWE Transgas Net Madrid, 26-28 February 2006

Thank you for your attention!