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E-910 - Static Model Construction: Field Constraints & Integration with Subsurface Data

5 jours GEOT/CARBFT
Niveau
Perfectionnement
Public
  • Geologists, geophysicists, petrophysicists or reservoir engineers
Finalité
  • The Jurassic outcrops of Eastern Paris Basin are exceptional quality analogues for several producing oil fields, especially regarding sequence stratigraphy features and typical carbonate platforms architecture. Recent diagenetic and petrophysical investigation performed on selected outcrops and in equivalent subsurface provide a unique opportunity of proposing an updated, complete and integrated overview of shallow marine carbonates
Objectifs
  • This 5-day field course proposes:
  • an excellent review of the constraints to the static model in the field
  • an integration of outcrop observation with subsurface data: sedimentary architectures
  • a distribution and evolution of petrophysical properties through diagenesis
  • A geological and petrophysical static model was performed over a large area centered on the main zone of interest, along an extended stratigraphic interval (Bajocian to Kimmeridgian)
Pré-requis
  • Fundamentals of carbonate sedimentology may be a useful prerequisite, but a quick reminder can be organized in the field
Les + pédagogiques
  • Outcrop sections (quarries), cores, well logs, thin section photographs, RCA data, NMR logs
Observation
Field trip: Lorraine region (North-Eastern France) along the main outcrops of Middle and Late Jurassic carbonates Meeting point: on field trip location (Lorraine region)

Day 1
  • AM: Meeting point on field trip location
  • PM: Presentation of the stratigraphic succession and of the aims of the trip
  • Early Bajocian platform: 1 quarry (2 quarries possibly) with illustration of coral bioconstructions, and inter-bioherms sedimentation. Integration with 3D seismic observations. Quick reminder of basics of carbonate sedimentology on site if required
Day 2
  • AM: Late Bajocian flooding (flooding of the Early Bajocian carbonate platform), and subsequent establishment of Bathonian platform; discussion about forcing parameters on carbonate platform growths and demises. One type section in a quarry
  • PM: Bathonian platform outcrops (3) in distal (offshore), shoal (OOID shoal), and proximal environments; introduction to the local petrophysics (porosity, permeability, NMR, MICP…) and reservoir problematic. First integration and discussion of the 3D geological and reservoir model (input, controls on facies and poro-perm distribution in the Middle Jurassic carbonates)
Day 3
  • Visit of the Andra Underground Research Laboratory (to be confirmed) + core store with examples of subsurface equivalent of what has been and will be observed on outcrops AND/OR outcrops illustrating the return of carbonate sedimentation after the Callovian-Oxfordian marls, and the establishment of the Oxfordian platform; discussion about forcing parameters on carbonate platform growths and demises
Day 4
  • Visit of quarries (2 or /3) to illustrating the evolution of the Oxfordian/Kimmeridgian platform evolution; discussion about the evolution of the architecture of the platform, and of distribution of depositional environments distribution
  • Introduction to the local petrophysics (porosity, permeability, NMR, MICP…) and reservoir problematic. Second integration and discussion of the 3D geological and reservoir model (input, controls on facies and poro-perm distribution in the Upper Jurassic carbonates)
Day 5
  • AM: Optional quarry AND/OR local gastronomy specialties
  • PM: Travel back to Paris