Regional PhaseFinder Package: Mid-Norway

Haltenbanken can be classified as a mature exploration area, where black oils through gas condensates have been discovered. Multiple sources as well as timing and extent of overpressure are key elements in this province. The Vøring area is the new frontier. Up to now only gas has been discovered in commercial quantities.

Critical elements of basin evolution include the timing of overpressure generation as well as the occurrence, distribution and characteristics of individual source rock intervals. The burial and heat flow history of Vøring are still the object of debate.

Petroleum Plays: The Norwegian Petroleum Directorate has defined a total of 8 plays covering Carboniferous to Tertiary intervals. Key source rocks are the Jurassic shales and coals of the Spekk and re formations. However, Permian source potential is likely (Ravnefjeld Fm. equivalent) and the importance of secondary sources within the Jurassic such as the Melke, Not and Ror formations has been largely neglected. Prospectivity in the Vøring area is largely dependant on the presence of a Cretaceous source rock.

GeoS4's Mid-Norway PhaseFinder package allows the combination of source specific compositional predictions of petroleum, following the PhaseKinetic approach (di Primio and Horsfield, 2006), with petroleum system modelling. The correct reproduction of petroleum phase behaviour represents a major step forward in modelling fluid generation, migration and accumulation in this complex setting.

Deliverables

• Accurately predicts GOR, Formation Volume Factor, Saturation Pressure and API Gravity in time and space
• Includes PhaseKinetics data (di Primio and Horsfield, AAPG Bulletin, 2006) for eight selected source rocks from the study area

The Samples

The PhaseKinetics database

• Predicts petroleum compositions in time and space
• 2- and 4-component kinetic model for GOR prediction
• 14-component kinetic model for physical property/PVT prediction
• Contains bulk kinetic parameters measured at slow heating rates
• Assigns petroleum type organofacies
• Can be directly integrated into basin models of the study area

The Package

• Supplied with PetroMod input files of pseudo-compound physical properties for better API prediction
• Ask about PhaseKinetics Plus for carbon isotopic compositions of gases