Using Integrated Gas Chimney Processing, Frequency Attenuation attributes, and Seismic Facies Classification to Delineate Oil Filled Reservoirs: Case studies from the Oriente Basin, Ecuador
Connolly, D., Aminzadeh, F., Selva, C., and Curia, D.
“Top 10” Poster Presentation AAPG convention 2008
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Advanced seismic interpretation techniques in OpendTect
de Groot, P., Aminzadeh, F., Hemstra, N., de Bruin, G. 2008. Drilling & Exploration World, Vol. 17 No. 03, January 2008
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Stratigraphic Surfaces in the Depositional and Chronostratigraphic (Wheeler-transformed) Domain
De Bruin, G. Hemstra, N. and Pouwel, A., 2007, The Leading Edge July 2007 26: 883-886.
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Time Attributes of Stratigraphic Surfaces, Analyzed in the Structural and Wheeler Transformed Domain
De Bruin, G. & Bouanga, E.C. , 2007, 69th EAGE Conference & Exhibition, June 2007, London
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Unravelling a carbonate system: technical advances in seismic sequence stratigraphy
De Bruin, G., McBeath, K. and Hemstra, N., 2007. First Break, volume 25 May 2007.
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Advances Push Geophysics Beyond 3-D Methods
Thomsen, L., and Aminzadeh, F., 2007
American Oil & Gas Reporter, January 2007.
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How to create and use 3D Wheeler transformed seismic volumes
De Groot, P., de Bruin, G. and Hemstra, N., 2006. 76th SEG Annual Meeting, New Orleans, 1-6 October 2006.
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Integrating neural networks and fuzzy logic for improved reservoir property prediction and prospect ranking.
Aminzadeh, F. and Brouwer, F., 2006. 76th SEG Annual Meeting, New Orleans, 1-6 October 2006.
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Visualizing Gas Chimney Volumes Reduces Exploration Risk: A Case Study from Onshore Louisiana.
Klutts, J., Connolly, D.L., Aminzadeh, F., and Brouwer, F., 2006. 76th SEG Annual Meeting, New Orleans, 1-6 October 2006.
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OpendTect SSIS - Sequence Stratigraphic Interpretation System 
De Groot, P., de Bruin, G. and  McBeath, K. 2006 Drilling & Exploration World, Vol. 15 No. 11, Sept. 2006.
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Synchronized sequence stratigraphic interpretation in the structural and chrono-stratigraphic (Wheeler transformed) domain
De Bruin, G., Ligtenberg, H., Hemstra, N. and Tingdahl, K., 2006. EAGE Research Workshop, Grenoble, 25-27 September 2006.
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Sequence Stratigraphic Interpretation in the Wheeler Transformed (Flattened) Seismic Domain
Ligtenberg, H., de Bruin, G., Hemstra, N. and Geel, C., 2006, 68th EAGE Conference & Exhibition, Vienna, June 2006.
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OpendTect, the Open Source seismic interpretation system
Hemstra, N., 2006, 68th EAGE Conference & Exhibition, Vienna, June 2006. 
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Interactive multi-volume seismic attribute analysis in OpendTect
de Groot, P., 2006,
Drilling & Exploration World, Vol. 15 No. 3, Jan. 2006.
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Technical Challenges in the Petroleum Industry and Future Trends in Improved Oil Recovery
de Groot, P., and Aminzadeh F., 2005
IOR2005, Tehran, Iran
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Assessing hydrocarbon risk with neural network classification methods
Aminzadeh, F. , Ross, C,. and Brouwer, F., 2005
EAGE 67th Conference & Exhibition — Madrid, Spain, 2005
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Determining Migration Pathway in Marco Polo Field Using Chimney Technology
Walraven, D., Connolly, D.L., and Aminzadeh, F., 2005
EAGE 67th Conference & Exhibition — Madrid, Spain, 2005
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A neural networks based seismic object detection technique
Aminzadeh, F. and de Groot, P., 2005
SEG Technical Program Expanded Abstracts -- 2005 -- pp. 775-778
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The open source model in geosciences and OpendTect in particular
de Groot, P. and Bril, A., 2005
SEG Technical Program Expanded Abstracts -- 2005 -- pp. 802-805
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Using gas chimneys in seal integrity analysis: A discussion based on case histories
Heggland, R., 2005
in P. Boult and J. Kaldi, eds., Evaluating fault and
cap rock seals: AAPG Hedberg Series, no. 2, p. 237 – 245.
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Detection of fluid migration pathways in seismic data: implications for fault seal analysis
Ligtenberg, H., 2005.
Basin Research, March 2005, volume 17, p. 141-153.
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Populating a PSDM created Earth Model with PSTM predicted seismic properties
Huck, A., de Rooij, M., de Groot, P., Henke, C. and Rauer, S., 2005.
First Break, Oct. 2005, pp 87-91.
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Semi-automated detection of faults in 3D seismic data
Tingdahl, K. and de Rooij, M., 2005.
Geophysical Prospecting pp 553-542.

Examples of multi-attribute, neural network-based seismic object detection
de Groot, P., Ligtenberg, H., Oldenziel, T., Connolly, D. and Meldahl, P. (Statoil), 2004. In GS Memoir No. 29 "3D Seismic Technology; Application to the Exploration of Sedimentary Basins." Editors Davies, R.J., Cartwright, J.A., Stewart, S.A, Lappin, M. and Underhill, J.R.
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Hydrocarbon Migration and Accumulation Above Salt Domes - Risking of Prospects by the Use of Gas Chimneys
Heggland, R., 2004.
24th Annual GCSSEPM Foundation Bob F. Perkins Research Conference, Salt-Sediment Interactions and
Hydrocarbon Prospectivity: Concepts, Applications, and Case Studies for the 21st Century,
December 5-8, 2004, Houston, Texas.
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Fault seal analysis by enhancing fluid flow paths and fault irregularities in seismic data
Ligtenberg, H., 2004.
AAPG International Conference, Cancun, Mexico, October 2004. Extended abstract.
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Definition of geohazards in exploration 3-D seismic data using attributes and neural-network analysis
Heggland, R., 2004.
AAPG Bulletin, Special Theme Issue: High-resolution studies of continental margin geology and geohazards
Volume 88, No. 6, June 2004.
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Sealing quality analysis of faults and formations by means of seismic attributes and neural networks
Ligtenberg, H., 2004.
EAGE Proceedings of Fault and Top Seals conference, Montpellier, September 2003.
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Soft computing for qualitative and quantitative seismic object detection and reservoir property prediction
Aminzadeh, F., with contributions from de Groot P., and Wilkinson, D., 2004.
Part 1: Neural network applications. First Break, March 2004.
Part 2: Fuzzy Logic applications. First Break, April 2004.
Part 3: Evolutionary computing and other aspects of soft computing. First Break, June 2004.

Identifying seismic objects by their texture, orientation and size: A new interpretation tool
Meldahl, P. (Statoil), Heggland, R. (Statoil), Bril, A., de Groot, P. and Aminzadeh, F., 2003. AAPG Annual Meeting, Extended abstract, Houston

Unravelling the petroleum system by enhancing fluid migration paths in seismic data using a neural network based pattern recognition technique
Ligtenberg, H., 2003.
Geofluids magazine, 3, November 2003, pp 255-261.
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Application of gas chimney technology in the Lamprea area, offshore GOM
Alvarado, J., Aminzadeh, F. and Connolly, D., 2003.
SEG annual meeting, Dallas. Extended abstract.
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Sealing quality analysis of faults and formations by means of seismic attributes and neural networks
Ligtenberg, H., 2003.
EAGE Fault and Top Seal conference, Montpellier, France, September 2003. Extended abstract.
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Fluid migration path detection and its application to basin modelling
Ligtenberg, H. and Thomsen, R. (Maersk Oil), 2003.
65th EAGE conference, Stavanger, Norway
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Fluid migration path detection in seismic data, a valuable tool in oil and gas exploration
Ligtenberg, H., 2003.
European Geologist Magazine, volume 15, June 2003
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Chimney detection and interpretation - revealing sealing quality of faults, geohazards, charge of and leakage from reservoirs
Ligtenberg, H. and Connolly, D., 2003.
Journal of Geochemical Exploration, May 2003. Contribution to Geofluids IV, Fourth international conference
on fluid evolution, migration and interaction in sedimentary basins and orogenic belts, Utrecht,
the Netherlands.
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Vertical Hydrocarbon Migration at the Nigerian Continental Slope: Applications of Seismic Mapping Techniques
Heggland, R. (Statoil), 2003.
AAPG conference, Salt Lake City
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Application of Chimney Cubes in the Design of Geochemical Surveys
Heggland, R. (Statoil), 2003.
AAPG conference, Salt Lake City

Time-lapse seismic within reservoir engineering
Oldenziel, T., 2003.
PhD thesis, Delft University of Technology, pp. 204.
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Soft computing and intelligent data analysis in oil exploration
Nikravesh, M., Aminzadeh, F. and Zadeh, L.A., ed., 2003.
With contributions from Ligtenberg, H. and Wansink, A.G. and Tingdahl, K. Developments in
pertoleum science series, vol. 51. Elsevier.

Multi-attribute analysis of 4D anomalies using pattern recognition technology
Oldenziel, T., Meldahl, P., Ligtenberg, H., Digranes, P., Stronen, L.K., 2002. SEG Annual Meeting, Expanded abstract, Salt Lake City

Looking for gas chimneys and faults
Aminzadeh, F. and Connolly, D., 2002.
AAPG Explorer, 23, nr 12, December 2002, pp 20-21
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Geohazard detection and other applications of chimney cubes
Aminzadeh, F., Connolly, D., Heggland, R. (Statoil), Meldahl, P. (Statoil) and de Groot, P., 2002.
The leading Edge, July 2002, pp 681-685
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Seismic evidence of vertical fluid migration through faults, Applications of Chimney and Fault detection
Heggland, R. (Statoil), 2002.
AAPG Hedberg Conference, Vancouver, BC, Canada
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Determining migration path from seismically derived gas chimneys
Aminzadeh, F., de Groot, P., Berge, T. (Forest Oil), Oldenziel, T. and Ligtenberg, H., 2002.
AAPG Hedberg Conference, Vancouver, BC, Canada
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Seismic inversion successfully predicts reservoir, porosity, and gas content in Ibhubesi Field, Orange Basin, South Africa
Berge, T.B., Aminzadeh, F., de Groot, P. and Oldenziel, T., 2002.
The Leading Edge, April 2002.

Neural network prediction of permeability in El Garia Formation, Ashtart oilfield, offshore Tunesia
Ligtenberg, H. and Wansink, G. (formerly dGB), 2002.
In: Nikravesh, M., Aminzadeh, F., and Zadeh, L.A. (Eds.), 2002. Soft computing and intelligent data analysis
in oil exploration. Developments in Petroleum Science, Volume 51. Chapter 19, pp 397
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Seismic reservoir characterization with limited well control
Oldenziel, T., Aminzadeh, F., de Groot, P. and Nielsen, S. (GeoInfo; dGB agent), 2002.
EXPOGEF, 7th International SBGf in Bahia, Brasil
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Point bar geometry, connectivity and well test signatures
de Rooij, M., Corbett, P. (Herriot-Watt) and Barens, L. (Total), 2002.
First Break, volume 20

Meta-attributes - the key to multivolume, multiattribute interpretation
de Rooij, M. and Tingdahl, K., 2002.
The Leading Edge, October 2002, pp 1050-1053
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Fracture detection from pre-stack p-wave data
de Rooij, M., Hemstra, N. and van Boom, R. (Wintershall), 2002.
64th EAGE annual conference, Florence, Italy
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Semi-automated object detection in 3-D seismic data
Tingdahl, K., de Groot, P. and Heggland, R. (Statoil), 2001. Offshore, August 2001
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Selecting and combining attributes to enhance detection of seismic objects
de Groot, P., Ligtenberg, H., Meldahl, P. (Statoil) and Heggland, R. (Statoil), 2001. 63rd EAGE conference, Extended abstract, Amsterdam
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Detection of seismic objects, the fastest way to do prospect and geohazard evaluation
Heggland, R. (Statoil), Meldahl, P. (Statoil), de Groot, P. and Bril, A., 2001. 63rd EAGE conference, Extended abstract, Amsterdam
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Examples of seismic chimney detection and interpretation
Ligtenberg, H., 2001.
Subsurface sediment mobilisation conference, Ghent, Belgium

Seismic expression of hydrocarbon accumulations and seeps
de Groot, P., 2001.
ESF workshop Delft, August 2001
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Mapping of fluid flow by the use of 3D seismic data and special processing
Heggland, R. (Statoil), 2001.
ESF workshop Delft, August 2001
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Using gas chimneys as an exploration tool, Part 1 and Part 2
Aminzadeh, F., de Groot, P., Berge, T. (Forest Oil) and Valenti, G. (AGIP), 2001.
World Oil, May 2001

Identifying faults and gas chimney using multiattributes and neural networks
Meldahl, P. (Statoil), Heggland, R. (Statoil), Bril, A. and de Groot, P., 2001.
The Leading Edge, May 2001
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Neural network prediction of permeability in El Garia Formation, Ashtart oilfield, offshore Tunesia
Ligtenberg, H. and Wansink, G. (formerly dGB), 2001.
Journal of Petroleum Geology JPG, vol.24(4), October 2001, pp 389
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Unsupervised segmentation in seismic data analysis
Grennberg Fismen, B., Clausen, S., Yang, L., Carlin, M., Kavli, T. (all Sintef) and
Wansink, G. (formerly dGB), 2001.
ICIP conference in Thessaloniki, Greece
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A new confidence bound estimation method for neural networks, an application example
Wansink, G. (formerly dGB), Yang, L. (Sintef), et al., 2001.
63rd EAGE conference, Amsterdam
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Semi-automatic detection of faults in 3-D seismic signals
Tingdahl, K., Steen, O. (Statoil), Meldahl, P. (Statoil) and Ligtenberg, H., 2001.
71st SEG conference, Houston

Semi-automated detection of seismic objects by directive attributes and neural networks, method and applications
Meldahl, P. (Statoil), Heggland, R. (Statoil), Bril, B. and de Groot, P., 2000. 62nd EAGE conference, Extended abstract, Glasgow
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Detection of Seismic Chimneys by neural networks, a New Prospect Evaluation Tool
Heggland, R. (Statoil), Meldahl, P. (Statoil), Bril, A. and de Groot, P. 2000.
62nd EAGE conference, Glasgow
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Seismic chimney interpretation examples from the North Sea and the Gulf of Mexico
Heggland, R. (Statoil), Meldahl, P. (Statoil), de Groot, P. and Aminzadeh, F., 2000.
American Oil & Gas Reporter, February 2000
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Prediction of static and dynamic parameters from time-lapse 3-D seismic
Oldenziel, T., de Groot, P. and Kvamme, L. (formerly Statoil), 2000.
62st EAGE Conference, Glasgow
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Estimation of Reservoir Properties by Monte Carlo Simulation
Nakayama, K. (JGI; dGB agent), 2000.
SPE Asia Pacific Conference on Integrated Modelling for Asset Management, Yokohama

Neural network-based prediction of porosity and water saturation from time-lapse seismic; a case study
Oldenziel, T., de Groot, P. and Kvamme, L. (formerly Statoil), 2000.
First Break, February 2000.

An evaluation of confidence bound estimation methods for neural networks
Yang, L. (Sintef), et al., 2000.
presented at ESIT
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Reservoir parameter estimation using a hybrid neural network
Aminzadeh, F., et al., 2000.
Computer and Geoscience
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dGB-GDI Concepts & theory
A document from 2000 describing the concepts and mathematical foundations on which
some important dGB-GDI tools and functions are based.
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Challenges direct future of geophysics
Aminzadeh, F., 2000.
Special millenium edition of the American Oil and Gas Journal
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The chimney cube, an example of semi-automated detection of seismic objects by directive attributes and neural networks: Part 1; Methodology
Meldahl, P. (Statoil), Heggland, R. (Statoil), de Groot, P. and Bril, A., 1999.
69th SEG conference in Houston

The chimney cube, an example of semi-automated detection of seismic objects by directive attributes and neural networks: Part 2; Interpretation
Meldahl, P. (Statoil), Heggland, R. (Statoil), de Groot, P. and Bril, A., 1999.
69th SEG conference in Houston

Volume Transformation by way of Neural Network Mapping
de Groot, P., 1999.
61st EAGE Conference, Helsinki

Seismic Reservoir Characterisation Using Artificial Neural Networks
de Groot, P., 1999.
19th Mintrop seminar, Muenster, Germany

Neural networks introduction
A document from 1998 describing Multi-Layer-Perceptrons, Radial-Basis-Functions and Unsupervised-Vector-Quantiser.
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Stochastic inversion of seismic data by evaluation of pseudo-wells
Bril, A. and de Groot, P., 1998.
60th EAGE conference, Leipzig

Analysing and simulating stratigraphic patterns using Markov Chain analysis
Bekkevold, J. and Bril, A., 1998
60th EAGE conference, Leipzig

dGB-GDI Introduction
A general introduction to dGB-GDI including the integration framework concept, the well simulator
and neural networks.
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Monte Carlo statistics
A document from 1997 on simulating correlated multi-variate stochastic variables.
Be prepared for some heavy mathematics.
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Rock-physics relationships
A document from 1997 explaining Gassmann's equation and some other basic equations used in rock.
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Quantitative interpretation generally needs no seismic attributes
de Groot, P. and Bril, A., 1997.
59th EAGE conference, Geneva

The use of pseudo-wells in seismic interpretation studies
de Groot, P. and Bril, A., 1996.
58th EAGE conference in Amsterdam

Dealing with the geoscientific scaling problem - an Object-Oriented approach
de Groot, P. and Bril, A., 1996.
1996 EAGE Winter Symposium

Should we store all data in standardized data stores?
Bril, A. and de Groot, P., 1996.
58th EAGE conference, Amsterdam