3D oil migration modelling of the Jurassic petroleum system of the Statfjord area, Norwegian North Sea

Johannesen, J.; Hay, Stephen; Milne, John; Jebsen, C.; Gunnesdal, S.C.; Vayssaire, A.

doi:10.1144/petgeo.8.1.37

Cited by 24 publications

(11 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Lower Jurassic Dunlin/Statfjord Formation is only a poor gas-generative source rock with a TOC value of 1.47%. Johannesen et al (2002) also presented source rock qualities of the Draupne and Heather Formation in the Statfjord area. This study verifies that the Draupne Formation contains a rich, oil-generative source rock.…”

Section: Regional Contextmentioning

confidence: 99%

“…The structures of the upper 12 layers from NordlandC2 down to Maureen are horizontally very smooth. Whereas the Chalk layer features differences in elevation by close to 2,500 m. The deepest part of the study area is the Cormorant at 8,360 m depth in the northwestTable 1Average TOC and HI values of the Draupne and Heather formation (Late Jurassic) located in the Statfjord area (afterJohannesen et al 2002) …”

mentioning

confidence: 99%

See 1 more Smart Citation

Mudstone compaction and its influence on overpressure generation, elucidated by a 3D case study in the North Sea

Broichhausen¹,

Littke

Hantschel³

2005

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

Mudstones are one of the least permeable rocks in most sedimentary sequences. Accordingly they can act as seals for fluid flow leading to abnormal overpressures. Nevertheless, mudstone compaction and related permeability and porosity decrease are not adequately described in current basin modelling software, because only mechanical compaction is taken into account. In reality, however, clay minerals undergo severe chemical diagenesis which certainly influences petrophysical properties and compaction. In this context a mathematical approach which has been originally developed in soil mechanics has been adapted to basin modelling. The underlying mathematical equations are carefully explained in the text. In the basic equation the compression coefficient is a function of void ratio and effective stress. Using these equations, overpressure can be predicted by using petroleum systems modelling techniques. This is shown for a real 3D case study in the North Sea, in which strong overpressure occurs. A compaction model for mudstones that depends strongly on the clay content of the individual stratigraphic units is used for the calibration of porosities in the 3D case study. In addition, a chemical compaction model that reduces porosities by using a kinetic reaction is used for the deeper part of the basin where mechanical compaction processes are less important. The pressure generation process depends strongly on permeability and compressibility of the porous medium. Therefore, the use of mudstone compaction and permeability models is sufficient to produce pore overpressures. In the case studied, abnormal overpressures are generated during burial together with the petroleum generation process. The mechanical and chemical compaction mechanisms ensure that the pressures are preserved in the deeper part of the basin.

show abstract

Section: Regional Contextmentioning

confidence: 99%

mentioning

confidence: 99%

Mudstone compaction and its influence on overpressure generation, elucidated by a 3D case study in the North Sea

Broichhausen¹,

Littke

Hantschel³

2005

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

show abstract

“…The results of two of these blocks focussed towards understanding the migration of petroleum into the Statfjord field Brent group and Statfjord reservoirs from the Viking graben and the East Shetland basin will be summarized here. A full description of the 3D model, model calibration, simulation results, and collaborating data can be found in Johannesen et al (2000;accepted). Figure 3 illustrates the present-day structure of the Top Brent group with the color representing simulated petroleum saturation.…”

Section: Petroleum Migration To the Statfjord Fieldmentioning

confidence: 99%

Quantitative Modeling in the North Sea: Towards a More Confident Assessment of the Critical Risks

Schneider

Hay

Walderhaug

et al. 2002

Oil & Gas Science and Technology - Rev. IFP

Self Cite

View full text Add to dashboard Cite

Résumé -Modélisation quantitative en mer du Nord : vers une meilleure estimation des risques -La modélisation quantitative est devenue une étape classique de l'analyse des risques, à la fois pour l'analyse des systèmes pétroliers et pour la prédiction de la qualité des réservoirs. Dans cet article, elle est associée à l'évaluation prospective en mer du Nord norvégienne et dans la zone de Haltenbanken. À ce jour, la mer du Nord norvégienne et certaines parties de la zone de Haltenbanken peuvent être considérées matures. En conséquence, les analyses quantitatives portent essentiellement sur des prospects marginaux hors des zones d'alimentation connues, des prospects satellites dans et autour de gisements connus, et des prospects profonds, souvent sous hautes pressions et hautes températures (HP/HT). La compréhension des chemins de migration éloignés des zones d'alimentation connues est une clé du succès. À proximité des gisements connus, le rapport gaz/huile (GOR) constitue un facteur de risque. Dans les réservoirs HP/HT, la qualité de ces derniers et la tenue des couvertures sont les facteurs les plus importants. L'application de modèles quantitatifs dans ces environnements permet de mettre en oeuvre une méthodologie cohérente d'évaluation, de tester les conséquences des incertitudes géologiques, et d'améliorer la confiance. Dans cet article, nous illustrons tout d'abord l'utilisation de la modélisation de la migration 3D afin de comprendre les chemins de migration proches des gisements connus et éloignés des zones sources connues. Puis, nous présentons notre expérience pour reproduire les GOR observés avec l'utilisation des modèles compositionnels 2D. Enfin, nous montrons comment nous modélisons l'évolution de la porosité dans des zones HP/HT et l'influence que la diagenèse du quartz, contrôlée par la température, a sur les fuites dans les couvertures et l'évolution des pressions. Ces exemples montrent comment des outils de modélisation quantitative et de nouvelles connaissances sur les processus fondamentaux sont utilisés et développés à ce jour en mer du Nord et dans la zone de Haltenbanken. Abstract

show abstract

“…As a result, various case histories, 'calibrated' to present day known accumulations, have predicted hydrocarbon phase and distribution at the basin scale with varying degrees of success (e.g., Schroeder & Sylta 1993;Symington et al 1998;Cowan et al 1999;Johannesen et al 2002).…”

mentioning

confidence: 99%

Integrated four-dimensional modelling of sedimentary basin architecture and hydrocarbon migration

Clarke

Burley

Williams

et al. 2006

View full text Add to dashboard Cite

Structural geometries, faults and their movement histories, together with the petrophysical properties of flow units, are some of the major controls on hydrocarbon migration pathways within sedimentary basins. Currently, structural restoration, fault-seal analysis and hydrocarbon migration are treated as separate approaches to investigating basin geohistory and petroleum systems. Each of these separate modelling approaches in their own fields is advanced and sophisticated but they are not compatible with each other. Lack of integration produces incorrect palaeogeometries in basin models and inaccurate migration pathways.A combined structural restoration and fault-seal analysis technique, integrated with fast hydrocarbon migration pathway modelling code based on invasion percolation (IP) methods, is described. These modelling methods are used to develop a 4D basin modelling workflow in which evolving basin geohistories and geometries form an integral part of the analysis of hydrocarbon migration and trapping. By combining structural restoration and 3D fault-seal analysis it is possible to investigate the evolution of structurally complex traps through time. Integration of these techniques with a numerically fast migration pathway modelling technique allows hydrocarbon migration pathways and accumulations to be modelled through the evolution of the basin with time. Additionally, the effects of uncertainties in structural geometry, fault seal or any of the model input parameters can be explored using a risk-driven approach to modelling. These methods are demonstrated using synthetic, computer generated, 3D models and a well-constrained model of the Moab Fault, Utah, USA. Comparison of modelled structural geometries, fault-seal properties and predicted trapped hydrocarbons with outcrop data is used to validate the integrated modelling approach. The validated techniques are then applied to a seismically derived, 3D model from the southern North Sea, UK, to demonstrate how an integrated, risk-driven approach to modelling allows the effects of uncertainties in the distribution of hydrocarbon accumulations to be investigated.

show abstract

3D oil migration modelling of the Jurassic petroleum system of the Statfjord area, Norwegian North Sea

Cited by 24 publications

References 10 publications

Mudstone compaction and its influence on overpressure generation, elucidated by a 3D case study in the North Sea

Mudstone compaction and its influence on overpressure generation, elucidated by a 3D case study in the North Sea

Quantitative Modeling in the North Sea: Towards a More Confident Assessment of the Critical Risks

Integrated four-dimensional modelling of sedimentary basin architecture and hydrocarbon migration

Contact Info

Product

Resources

About