Prospectivity G and M blocksin the Dutch offshoreA regional well review shows that early exploration focused on a mix of targets, and that most plays are only tested by 3 or 4 wells. From the mid 90’s onward the Triassic was targeted almost exclusively. Main goal of this project is to de-risk underexplored plays and identify leads. New insights and exploration opportunities will be provided to the industry. This area was specifically selected on the presence of sizable open acreage and underexploited infrastructure.

Potential plays in the GM Area• Upper Cretaceous Chalk in 4-way dip closures sealed by Tertiary shales or intra

Chalk traps.• Upper Jurassic sandstones in 4-way dip or fault-dip closures sealed by intra Jurassic/

Lower Cretaceous shales and stratigraphic traps.• Lower Triassic sandstones (4-way dip sealed by Upper Triassic shales/ salt, truncation

traps sealed by Lower Cretaceous shale, fat sand play).• Zechstein caprock play on top of salt diapirs sealed by Jurassic or Cretaceous shales.• Basal Rotliegend sandstone play sealed by Silverpit clay/ Zechstein salt.• Westphalian sst in fault-dip traps.

GM study outlineFields

GasOil

Base Triassic-5500-5000-4500-4000-3500-3000-2500-2000-1500-1000

Legend

F12

B’’

A’

A’’

B’

Terschelling Basin fault zone Ameland BlockE W

minor

Chalk playstructural trap

Salt plugging Triassic, Jurassicand Cretaceousfour-way dip trap

Chalk structural trap

Basal Rotliegend structural-stratigraphic trapCarboniferous fault-dip trap

Rifgronden fault zoneSchill Grund High Terschelling Basin

N SLower Triassic sstunconformity trap

ZechsteinCaprockstructural trap

Upper Triassicfat sand play

Lower Triassic ssttruncation trap

Carboniferous fault-dip trap Carboniferous fault-dip trap

B’

A’

B’’

A’’

0  

1  

2  

3  

4  

5  

1969   1976   1983   1990   1997   2004   2011  

#  wells  drilled  

Year  

Explora:on  History  –  Target  of  explora:on  wells  

Ter:ary   Upper  Cretaceous   Lower  Cretaceous   Triassic  

Jurassic   Permian  Zechstein   Permian  Rotliegend   Carboniferous  

GM study outlineFields

GasOil

Base Triassic-5500-5000-4500-4000-3500-3000-2500-2000-1500-1000

Legend

F12

B’’

A’

A’’

B’

ED G

F

K

J

LM N

P

ST

OR

Q

A B

Lower Cretaceous

Upper Cretaceous

North Sea Group

Upper Triassic

Lower Triassic

Upper Jurassic

Upper Permian

Lower Permian

Upper Carboniferous

Sandstone

Migration path

Unconformity