- 231 Basin seismic stratigraphy and aspects of prospectivity in the NE Baffin Bay, Northwest Greenland Written by: Ulrik Gregersen, John R. Hopper & Paul C. Knutz KFUPM Earth Science Department Mar. 03, 2015 Presented by: Abdullah Alqubalee [email protected]
Basin seismic stratigraphy and aspects of prospectivity in the NE Baffin
Aug 15, 2015
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Basin seismic stratigraphy and aspects of prospectivity in the NE Baffin Bay, Northwest
GreenlandWritten by:
Ulrik Gregersen, John R. Hopper & Paul C. Knutz
KFUPMEarth Science Department
Mar. 03, 2015
Presented by:Abdullah Alqubalee
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Outline• Introduction.• Objectives.• Dataset and Methodology.• Results and discussion• Conclusion.
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Introduction• The study region is located in the north-eastern part of Baffin Bay,
offshore, Northwest Greenland.
• Hydrocarbon exploration has increased significantly in this region.
• Extensive geophysical surveys have been acquired during the last few years in this region.
• About 2746 million barrels of oil have been estimated in this region.
• Reassessment and review the tectonostratigraphic evaluation of the region with a particular focus on the development of basin is needed.
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Objectives• To outline the structures and basins in the north-eastern Baffin Bay
region.
• To discuss the results in the context of basin development and hydrocarbon prospectivity.
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Baffin Bay
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BBB: Baffin Bay Basin; BBV: Baffin Bay Volcanics; CB:Carey Basin; KB: Kivioq Basin; KR: Kivioq Ridge; KYB: Kap York Basin; MBG: Melville Bay Graben; MBR: Melville Bay Ridge; NB: Nuussuaq Basin; SB: Steensby Basin; UB: Upernavik Basin; UE: Upernavik Escarpment; WGV: West Greenland Volcanics; Hatched area: Volcanics of the WGV near seabed.
Baffin Bay and the surrounding regions
Gre
gers
en e
t al.,
201
3
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Dataset and Methodology2D Seismic Survey conducted in the region from 1992 to 2009.
Gregersen et al., 2013
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Magnetic anomaly data from the Geological Survey of Canada.
Gregersen et al., 2013
Dataset and Methodology
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Gravity data from the Danish National Space Center.
Gregersen et al., 2013
Dataset and Methodology
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• The nearest wells are 100’s of km from the study region and cross major tectonic boundaries and volcanic. Thus, it is unreasonable to establish seismic ties to these wells.
• Approximated constraints on age of the various units are placed based on the regional geology which is sufficiently well established.
• The interpretation of structures and basins is based on a combination of seismic section, gravity and magnetic data.
• Depth conversion is complicated by a lack of velocity information.
• To estimate depths, the final seismic migration velocities provided by TGS-Nopec survey were used.
Dataset and Methodology
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Gre
gers
en e
t al.,
201
3ABC
D
E
F
G
H
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Results and discussionG
rege
rsen
et a
l., 2
013
Strong reflection is interpreted as the top basalt.
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Results and discussionG
rege
rsen
et a
l., 2
013
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Results and discussionG
rege
rsen
et a
l., 2
013
- Melville Bay Ridge. - Reverse phase of seabed (soft-kicks).
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Results and discussionG
rege
rsen
et a
l., 2
013
a. Mound in basinb. Prograding reflection.
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Results and discussionG
rege
rsen
et a
l., 2
013
a. Trough at highsb. Prograding reflection.
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Results and discussionG
rege
rsen
et a
l., 2
013
Isochore map for unit F
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Results and discussionG
rege
rsen
et a
l., 2
013
Isochore map for unit G
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Results and discussionG
rege
rsen
et a
l., 2
013
Prospective map of the depth (with respect to sea level) to horizon F1
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Conclusion• Mapping and analysis of the northeastern Baffin Bay region show deep
basin separated by large structural heighs.
• Results show the highs likely developed during Cretaceous rifting followed by compressional tectonic during Paleogene.
• Seismic facies mapping indicates the possible presence of mass flows, fans, canyons/channels and extensive mudstone section.
• Several large potential trap types related to rifting blocks, compressional ridges and drapes.
• All components of a working petroleum system are found in the wider region, but lack of stratigraphic well control hampers proper risk assessment in the study area.
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Yemen- Jabal an-Nabi Shu'aib, 3670m15° 16 45″ N, 43° 58 33″ E′ ′
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ReferenceGregersen, U., Hopper, J. R., & Knutz, P. C. (2013). Basin seismic stratigraphy and aspects of
prospectivity in the NE Baffin Bay, Northwest Greenland. Marine and Petroleum Geology, 46, 1-18.
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