lsbb carbonate reservoirs - web of conferences...carbonate reservoirs the rustrel-fontaine de...

LSBB Rock Type :The only undergroundLaboratorySet into aFractured – PorousCarbonateReservoir

LSBB

http://www.deepscience.org

Carbonate Reservoirs

The Rustrel-Fontaine de Vaucluse LSBBA Unique Facility for Deep Carbonate Reservoir Science

Yves GuglielmiGSRC, 3 place Victor Hugo, Case 67, 13331 Marseille cedex 3

Phone: 04 91 10 61 78Mail: [email protected]

2010 i-DUST Conference (Apt, France)

Rustrel

LSBB is located in theSouth-EasternSedimentary Basin Context (France ) :

• Filled with Triassic to Cretaceoussedimentary deposits

• Highly deformed by Pyrenean and Alpine Orogeneses (large structural unitsfolded and bounded by major fault zones)

LSBB

LSBB

(Lamarche et al., 2010)

(Masse, 2003)

Paleo-Geographic Context (age 150 to 70 My) : Outer Carbonate Platform Deposits

LSBB

• Sedimentary rocks• Sub-aqueous• Bio-construction• CaCO3

Burial/Uplift History of LSBB rocks

• about 1 km deep burial(Compaction and diagenetic processes)

• uplift mainly 50 My ago(Tectonic deformations)

• series almost emersed since 50 My(Surface alteration, karstification)

(Lamarche et al., 2010)

Economical and EnvironmentalContexts

LSBBDeep UnderGroundWater Ressources(Fontaine de Vaucluse,Coastal karst, etc.)

CO2 sequestrationIn saline aquifers(A deep sequestration siteClose to Marseille HarbourPetroleum Industries) Carbonate Oil Recovery

(65% of world oil reserves)Shelf Carbonate analogue of KharaibAnd Shu’aiba formations

What is a carbonate environment?Simple Mineral (CaCO3) but highly complex processes

Windward island formed by

Transported and Lithified

Coral Boulders

Onbank transport of

Coral Boulders from coral “platier”

at 15-0 m water depth

1 km

Gravitaryprocess

Diagenesis

Tupai Atoll,

French Polynesia

Courtesy of L. Montaggioni

(Cantrell & Hagerty, 1999)

10 cm

1 m

Arfib

And the result is … Porosity/Permeability Heterogeneity

at all Scales

10 m

GEOLOGICAL CONCEPT

Separate correlated from

non-correlated

heterogeneities,

at the relevant scales

Porosity 27-30 % bv

K: 200 mD

K: 50 mD K: 1 mD

K: 0.3 mD

Poroperm?

Arfib

• How to reconstruct the reservoir architecture and sedimentary facies ?

• How to relate the seismo-stratigraphical reservoir model to rock properties ?

• How to model the properties in 3D ?Upscaling Properties from plug, core, well to inter-well.

• What are the main factors that control fluid movementsin carbonate reservoirs ?

• ….

Some Scientific Challenges

for the characterisation of carbonate reservoirs

How to re-construct the reservoir architecture

and sedimentary facies ?

Stratigraphic andFacies DeterminationOn borehole Cores

Coupling stratigraphicanalyses with seismicimages based ondeterministic concepts ofsequence stratigraphy

3D Reservoir Architecture

Challenge : Improve the concepts used to reconstruct carbonate 3D architectures by the

integration of subsurface and outcrop data

After Kerans & Tinke, 1995





• ….



Ex. of the Malampaya

Tertiary Carbonate

Fournier & Borgomano (2006)

1 mm

How to relate the seismo-stratigraphical reservoir model to rock properties ?

1km

50ms

MA-1 MA-5 MA-2

Porosity Synthetic

seismogram

Protected inner shelf Reefal / peri-reefal envt

Forereef Deeper slope

Meteoric / Burial cements

(Type IIIb diagenetic unit)



Significance of seismic reflexions ?

Depositional architectures

overprinted by diagenetic transformations

Malampaya Field

30 % porosité

V K V K

Eberli, Massafero, 2003

Elastic rock properties not simply related

to density and porosity: critical impact of pore types

Significance of seismic reflexions?

Sedimentary textures

overprinted by diagenetic transformations

Fontaine de Vaucluse – LSBB Reservoir :Strong porosity variations within the stratigraphic column

N

S

Fontaine de Vaucluse – LSBB :Significance of seismic signalsDepositional architectures overprinted by tectonic transformations (Maufroy et al., Seismic Tomography, submitted )

N

S





• ….



How to characterize the properties in 3D ?In Carbonates, we face the problem at all scales!

Cores

Seismic

Resolution

Co

vera

ge

Fracture-PoresInteractions ?

SEM

Pore type Heterogeneity

Well-logs

Thin section

How to characterize the properties in 3D ?Experiments in the GAS gallery (LSBB) where various reservoir features can be explored !

http://hppp.unice.fr/ANR HPPP-CO2

PACA Petro-Pro ProjectANR SLAM

http://hppp.unice.fr/

Conclusion : Necessary integrative research

Global-Local SignalsClimat

Sea level

Environments

Biologic

Sedimentologic

Tectonic

3D-4D Modelling

Laser Scanner

Seismic

Petrophysics

Geophysics

Geochemistry

Paleomagnetism

ReservoirsOrigin/distribution of properties

Property detection

Flow dynamics

Development of numeric tools

Measurements

Carbonates Paleontology

Sedimentology

Petrography

Stratigraphy

Structural Geology

Observations

The Rustrel-Fontaine de Vaucluse LSBBA Unique Facility for Deep Carbonate Reservoir Science

• A highly representative case of wide and flat carbonate platformWhich factors control the carbonate factory ?How to model the 3D architectures spatial and temporal construction ?How to relate to rock properties and fluid flow dynamic response?

• Significance of seismic reflexions and other geophysics to image Sedimentary and/or Diagenetic Facies typical of Carbonates

It is possible to relate almost all types of carbonate reservoir architecture with geophysical images in the LSBB galleries

• Improving Resolution and Coverage of measurementand observation tools to estimate rock properties (porosity, permeability,..)in carbonate fractured-porous rocks

Installation of multi-scale experiments in unaltered rock at depth

lsbb carbonate reservoirs - web of conferences...carbonate reservoirs the rustrel-fontaine de...

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