Offshore West Greenland – data base and possible play types
3500
Generalised stratigraphy of South-West Greenland
55°
NE
50°
LITHOLOGY
■
LITHOLOGY
NON DEPOSITIONAL HIATUS
EROSIONAL HIATUS
MUDSTONE
■
■
DIAMICTITE
GRO#3
R
+
+
■
Paleocene - Eocene mudstones
68°
■
Hellefisk-1
Early
Eocene
SG
Top Paleocene volcanics/
Near Top Paleocene
55
SG
SO
SO
Postrift
Kangeq
Late
Cret.
Synrift
Appat
Sant.–
Cen.
65
83
■
■
■
■
■
■
■
■
■
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Normal faults
▲
Thrust faults
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■
■
■
■
■
■
■
■
■
■
■
■
■
■
E
■
■
■
Well
■
Licence area
Oil seepage
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■
■
■
■
■
■
■
■
■■
■
■
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Example of play type
Area covered by
the open door
policy
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■
Nuuk
■
6354/4-1
(Qulleq-1)
■
■
Transform faults
64°
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■
SC
FC
■
63
dFYLLA
HR
LIN
ANK
Y FR
LAD BASIN
2
+
■
■
BASIN
NUUK
c
■
■
HECLA
RISE
S.P.
E
■
■
KR
■
ATAMMIK
SC
■
1000
900
Transition zone between
continental and oceanic crust
Shallow basement
■
800
Mesozoic sediments on
continental crust
65°
■
700
+
■
■
■
■
■
■
600
W
+
■
▲
IKERMIUT
▲
▲
▲
▲
■
■
D
■
The Kangâmiut Ridge – a basement ridge possibly containing reservoirs on
the ridge crest and in flanking fans (drilled and shown yellow on depth section),
sealed by overlying Palaeogene mudstones (drilled) and possibly sourced from
Cretaceous source rocks in the flanking basins.
■
■
E
Area designated
for licensing round
late 2001
■
5 km
W
Peridotite ridge
Palaeogene basalts
Nukik-2
■
Lower Cretaceous?
deltaics?
MANIITSOQ
RISE
■
65
■
basement
Upper Cretaceous
mudstones
6
66°
Nukik-1
■
4
■
Paleocene - Eocene mudstones
?
Basement
Legend
NUKIK
PLATFORM
■
2
Unknown
■
KR
■
Eocene to Recent
'Deep'
Sequence
?
Oceanic crust
Kangâmiut-1
■
B o rd e r w
it h Can ad
a
GGU/90-7
?
■
DAVIS STRAIT HIGH
C
Kangâmiut-1
66
67°
Sisimiut
■
SG
?
F
■
CC
B
SB
Ikermiut-1
?
DGR: Disko Gneiss Ridge
KR: Kangâmiut Ridge
SC: Structural Complex
FZ: Fault Zone
63°
■
■
3
■
The Ikermiut Structural High – a complex of flower structures formed by
sinistral strike-slip movement of Canada relative to Greenland in the
Palaeogene. Possible Lower Cretaceous reservoirs in the flower structures,
sealed by Upper Cretaceous and Palaeogene mudstones (drilled) and
possibly sourced from Cretaceous source rocks in the flanking basins.
Licensed by the Phillips group.
SG
Kitsissut
Prerift?
■
■
NE 67
■
5 km
SW
a
■
?unknown "Deep sequence"
?99
Early
Cret.? ?144
SO?
SG
Earlyrift
■
basement
5
SO?
SISIMIUT
BASIN
■
Lower Cretaceous?
deltaics
FZ
■
■
4
D
49
Upper Cretaceous
mudstones
3
8
Middle Eocene to
Pliocene
■
■
■
Eocene to Recent
2
Mid-Eocene
Unconformity
Syndrift
Synrift
sea-bed
2
Two-way time (sec)
5000
GGU/90-6
1
Ma
Paleocene
Ikermiut-1
5500
6000
Age
Base Quaternary
Syn-drift,
local
transpression
S.P.
B
Area covered by
the open door
policy
NUUSSUAQ
BASIN
DGR
cal
Lo lift
Up
Post-drift
thermal subsidence
■
A Bright spot/AVO anomaly west of Disko island. Two bright spots/AVO
anomalies have been detected in Eocene sediments. One at the top of the
Palaeogene basalts and one 200 metres shallower in Eocene sediments. Oil may
have migrated through the basalts from underlying Cretaceous–Paleocene
source rocks, as is known to have occurred onshore. It may have been trapped in
transgressive sandstone reservoirs of Eocene age.
Horizon/
Sequence
Deepest offshore
well
Disko
A
?
5 km
GAS SHOW
■
59
■
4
Non-exclusive seismic data off West Greenland
62
■
2 km
60°W
50°W
Greenland
■
Nu
uss
uaq
61
Canad a
with
KANUMAS preference area
r
rde
Bo
■
Quatenary–U. Paleocene
mud
Area designated for licensing
round
Areas covered by
open-door policy
Disko
GGU line (1990-95)
■
1.5
61
Qulleq-1
GGU/92-22
70°N
GRO#3
70°N
E
D
45°W
■
?
55°W
■
Example of unlicensed fault-block play. The area around the Fylla
Structural Complex contains many examples of fault-blocks that could
contain structural traps. Many of the structures, including the one shown here
in the Hecla Rise area, appear to have been formed by transtensional
movements. Reservoirs could be in sands of Cretaceous or Palaeogene age
and the structures could contain and be surrounded by source rocks of
Cretaceous and possibly Paleocene age.
■
GGU/90-9
HGS line
68°N
Depth (km)
■
2.0
Hellefisk-1
Camp. mud
60
Sisimiut-West
Sant. sand
3.0
BGR line
Sisimiut
55
3.5
basement
TGS-NOPEC line
66°N
Exploration well
Water depth (m)
100 km
0-500
Nukik-2
Nukik-1
50°
54°
FUGRO line
Burmah line
Kangâmiut-1
ST9902-01001
Santonian sand play underlain by anticipated Cenomanian–Turonian source
rock in the Fylla Structural Complex. Several untested fault-block prospects are
present in the area.
Kangerlussuaq
Ikermiut-1
?
L.–M. Cret.
KANUMAS line
Nunaoil line
licence area
e rock
sourc
C–T
500-1000
1000-1500
>1500
1.5
4800
5000
5200
5400
S.P.No.
4800
5000
5200
5400
S.P.No.
1.5
GGU/92-03
Two-way time (sec)
F
2.0
2.5
25 km
64°N
L. Eocene
mudstones
Paleocene
mudstone
Nuuk
Qulleq-1
Fylla
licence
area
U. Cretaceous
sandstone/mudstone
U. Cretaceous
sand
U. Cretaceous
mudstone
2.0
Nukik
Platform
2.5
Turbidite
channel
L.–M. Cretaceous
sediment
Basement
25 km
Basin-floor turbidite fan play. The geo-seismic section is through the Nukik Fan of Late Cretaceous age, on
the north-west margin of the Nukik Platform. Large basin-floor turbidite fans which could contain trapped
hydrocarbons have been interpreted within the prograding complex.
62°N
62°N
100 km
G E U S
© GEUS, April 2001
www.geus.dk\ghexis
Quaternary
70°
■
GGU/95-17
MAJOR POTENTIAL SOURCE ROCK
MINOR POTENTIAL SOURCE ROCK
■
70°
Horst block. Closed structure
at top basalt level
POTENTIAL RESERVOIR ROCK
DEAD OIL
BASEMENT
+
SANDSTONE
Top basalt reflection
2000
Depth (km)
S
S
Onlap
1000
Two-way time (sec)
VOLCANICS
Cenozoic
Two-way time (msec)
CONGLOMERATE
Bright spot
60°W
55°W
50°W
Cretaceous
SW
Unknown
3000
■
2500
■
S.P.
0
■
A