Cristin-prosjekt-ID: 536962
Sist endret: 1. oktober 2019 13:27

Cristin-prosjekt-ID: 536962
Sist endret: 1. oktober 2019 13:27
Prosjekt

FOPAK Forecasting of architecture, seismic characteristics and flow behaviour in paleokarst reservoirs

prosjektleder

Jan Tveranger
ved NORCE Energi ved NORCE Norwegian Research Centre AS

prosjekteier / koordinerende forskningsansvarlig enhet

  • NORCE Norwegian Research Centre AS

Finansiering

  • TotalbudsjettNOK 9.400.000
  • Norges forskningsråd
    Prosjektkode: 267634

Klassifisering

Vitenskapsdisipliner

Petroleumsgeologi og -geofysikk • Petroleumsteknologi • Matematisk modellering og numeriske metoder • Geofag

Emneord

Geofysikk • Speleologi • Karsthydrogeologi • Reservoargeologi • Reservoarmodellering • Stokastisk simulering • Væskestrømning

Kategorier

Prosjektkategori

  • Anvendt forskning
  • Grunnforskning

Kontaktinformasjon

Telefon
56107144/ 91835211
Sted
Jan Tveranger

Tidsramme

Avsluttet
Start: 1. januar 2017 Slutt: 31. desember 2019

Beskrivelse Beskrivelse

Tittel

FOPAK Forecasting of architecture, seismic characteristics and flow behaviour in paleokarst reservoirs

Populærvitenskapelig sammendrag

Paleokarst reservoirs originate from dissolution (karstification) of soluble rocks and subsequent infill and collapse. Fluids percolating through fractures and faults as well and infiltrating porous beds can dissolve carbonate rocks and create connected systems cavities. This process can occur deep in the subsurface and be driven by hydrothermal fluids, but is best known as a near-surface process, involving surface water dissolving rock and forming caves and sinkholes. The shape and geometry of these cave systems is linked to rock properties, the orientation and spatial distribution of fault and fracture networks, climatic conditions and sea level. During burial, cave systems may gradually be filled in by sediments from the outside or by rocks originating from collapse of the roof. This produces a highly heterogeneous subsurface reservoir with properties and production behaviour that are very difficult to forecast.

The FOPAK project aims to improve our fundamental understanding of paleokarst reservoirs by studying if and how their petrophysical properties, seismic characteristics and production behaviour can be linked back to the configuration of the initial cave system.

 We employ a series of 3D models of mapped caves representing different geometric scenarios. Collapse, infill and collapse- related changes to the size and shape of caves can be modelled using established principles of rock mechanics and sedimentology. Through a technique known as “forward seismic modelling” using these models as input, it is possible to simulate what these reservoirs will look like on seismic surveys. This will allow us to establish what level of detail can be resolved in seismic data and provide a means for finding and describing seismic characteristics of the different scenarios. Finally, production behaviour of the models will be investigated using a fluid flow simulator to test the reservoir performance for a range of predefined production and injection strategies.

prosjektdeltakere

prosjektleder

Jan Tveranger

  • Tilknyttet:
    Prosjektleder
    ved NORCE Energi ved NORCE Norwegian Research Centre AS

Kristian Jensen

  • Tilknyttet:
    Prosjektdeltaker
    ved Institutt for geovitenskap ved Universitetet i Bergen

Christos Pennos

  • Tilknyttet:
    Prosjektdeltaker
    ved Institutt for geovitenskap ved Universitetet i Bergen

Bjarte Lønøy

  • Tilknyttet:
    Prosjektdeltaker
    ved NORCE Energi ved NORCE Norwegian Research Centre AS

Stein-Erik Lauritzen

  • Tilknyttet:
    Prosjektdeltaker
    ved Institutt for geovitenskap ved Universitetet i Bergen
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Resultater Resultater

Structural control on cave geometry, a case study from Aspfjordgrotta, Fauske, North Norway.

Thorvik, Magnus; Pennos, Christos; Lauritzen, Stein-Erik. 2019, NGF Winter Meeting 2019. UIBPoster

Processing 2D ERT-data in 3D environment: A case study inside a karstic cave in North Greece.

Fikos, Ilias; Vargemezis, George; Pennos, Christos; Lønøy, Bjarte; Jensen, Kristian; Tveranger, Jan. 2019, EAGE Near Surface Geoscience. NORCE, UIBVitenskapelig foredrag

Disentangeling paleokarst reservoirs.

Tveranger, Jan. 2019, FORCE seminar. NORCEVitenskapelig foredrag

Cross-disciplinary characterization and modelling of paleokarst reservoirs.

Tveranger, Jan. 2019, Gjesteforelesing. NORCEVitenskapelig foredrag

A modelling workflow for seismic characterization of Paleokarst reservoirs.

Kyrkjebø Johansen, Martin; Grimstad, Thomas Jarle; Lecomte, Isabelle; Tveranger, Jan; Drottning, Åsmund. 2019, NGF Winter Meeting 2019. NORCE, NORSAR, UIBVitenskapelig foredrag
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