Introduction
Within the conventional mapping framework of NCP-1 the Geological Survey of the Netherlands - TNO has started a detailed mapping program with emphasis on petroleum-geological topics, such as:
- facies analysis within a tecto-stratigraphic framework, - petrophysical analysis of cored reservoir intervals, - property modeling of actual and potential reservoirs, - 3D burial history of source and reservoir rocks.
The aim of this study is to present a more
comprehensive model of the subsurface to future and current operators in the oil industry in a basin-scale petroleum-system.
Deliverables
For the Terschelling Basin and southern Dutch Central Graben the following deliverables will be compiled:
- depth maps and isopach maps of major lithostratigraphic units
- 3D fault model
- velocity model with V0 grids and K-values - subcrop maps
- tecto-stratigraphic diagram - well correlations - erosion maps
- thickness, facies and property maps of reservoirs - source rock maps and diagrams with migration paths - maturity and burial diagrams
- pressure and temperature data
TNO
|Knowledge for business
Advisory Group for the Ministry of Economic Affairs
Poster Witmans 06RS
TNO Built Environment and Geosciences Geological Survey of the Netherlands PO Box 80015
3508 TA Utrecht The Netherlands
Nora Witmans
Petroleum-geological mapping
– Terschelling Basin and southern Dutch Central Graben
NCP-2 D
NCP-2 F NCP-2 C
NCP-2 G
NCP-2 B
NCP-2 A
NCP-2 E
0 25 50 km
NCP-2A = southern Dutch Central Graben and Terschelling Basin NCP-2B = Schill Grund High and Ameland Block NCP-2C = Step Graben, northern Dutch Central Graben and Elbow Spit High NCP-2D = Cleaverbank High
NCP-2E = Vlieland Basin, Central Offshore Platform and Texel-IJsselmeer High NCP-2F = Broad Fourteens Basin and West Netherlands Basin NCP-2G = Brabant Massif and Winterton High
2006
2007 2008 2008
2009
2009
2010
NC P-2A
02.55 10 15 20
km
TB
AB
HFZ FP VB COP
DCG
CBH
SGH
L G M F
Gas Gas & Oil Oil Upper Jurassic Posidonia Shale Formation Lower-Upper Jurassic base Zechstein faults
Cretaceous
Jurassic
Triassic Zechstein
Triassic
Zechstein
RBMVC
RBMVL MD
3860
3870
3880
3890
3900
3910
3920
3930
3940
3950 3952 3852
0.00GR150.00 0.00C10.000.0000POROc40.0000
0.0000PORalt40.0000
ShaleShaleShaleShaleSandShale
LithGR_RBM L02-02 [MD]
MD
4130
4140
4150
4160
4170
4180
4190
4200
4210
4220 4120
0.00GR150.00 0.00C10.000.0000POROc40.0000
0.0000POR40.0000
Shale
Shale
ShaleSandSandShaleShale
LithGR_RBM L02-05 [MD]
MD
3880
3890
3900
3910
3920
3930
3940
3950
3960
3970
3978 3878
0.00GR150.00 0.00C10.000.0000POROc40.0000
0.0000POR40.0000
ShaleShaleSandShale
LithGR_RBM M01-02 [MD]
MD
2760
2770
2780
2790
2800
2810
2820
2830
2840
2850
2858 2758
0.00GR150.00 0.00C10.000.0000POROc40.0000
0.0000PORalt40.0000
ShaleShaleShale
Shale
ShaleSand
Sand
ShaleShale
LithGR_RBM M07-02 [MD]
RBMVC
RBMVL
M04-03 L06-03
L05-07 L05-FA-101
L01-02 L01-06
6000 5000 4000 3000 2000 1000 0
0 5 10 15 20 km
Cleaver Bank
High Dutch Central Graben
Terschelling Basin
Ameland Block
Upper North Sea Group Middle and Lower North Sea groups Chalk Group
Rijnland Group
Schieland and Scruff groups with intra-Upper Jurassic marker "B3"
Altena Group with Posidonia Shale Fm Upper Germanic Trias Group Lower Germanic Trias Group Zechstein Group Upper Rotliegend Group Limburg Group oil
W E
gas fault
TVDSS
Figure 2 Structural geological map of the Terschelling Basin and southern Dutch Central Graben with the distribution of Lower – Upper Jurassic sediments, the distribution of the Posidonia Shale Formation (Lower Jurassic source rock) and oil & gas fields. TB Terschelling Basin, DCG Dutch Central Graben. The cross section is shown in figure 7
Figure 1 Location map showing an overview of the areas. The Terschelling Basin and southern Dutch Central Graben are located in area 2A
Figure 3 Depth map and isopach map of the Lower Germanic Trias Group showing that the base of the Triassic deposits is deeper than 6000m between saltdomes
Figure 7 Geological cross section across the Terschelling Basin and southern Dutch Central Graben showing producing oil & gas fields
NCP-2 A rb _depth
02.55101520
km scale 1: 300000
< 2000 200 -2500 300 -3500 3500 - 4000 4000 - 4500 4500 - 5000 5000 - 5500 5500 - 6000
> 6000 RB_fault
NCP-2 A rb _isopach
RB_fault 02.5510 1520km
scale 1: 300000
0 - 100 100 -200 200 -300 300 - 400 400 - 500 500 - 600 600 - 700 700 - 800
> 900 RB_fault
Figure 5 Seismic section with lateral Zechstein salt intrusions in the Upper Germanic Trias Group
Figure 6 Petrophysical evaluation of the Lower Volpriehausen Sandstone Member of the Lower Germanic Trias Group. This reservoir is a medium to fine grained sandstone, irregularly layered. The calculated results and porosity values measured from core samples show very good correlation
Figure 4 3D image of the top of the Zechstein Group in the mapped area. In the western part of the area the salt domes penetrate through the base of the North Sea Super Group (Cenozoic)
