3. Introduction
This report is compiled during March 2006. The purpose of this report is to give an overview
of the lead and prospect potential as Valioso (UK) Ltd sees it in open areas.
The report will not include raw geological data nor details not available in publications
available in the industry.
4. Quadrant 33
Valioso (UK) Ltd does see potential ranging from Triassic to Cretaceous within these Blocks
(see lead 1-7 in figure below). There has been worked on other play models in this area, based
on work performed from the UK side of the North Sea.
Lead 1 is a Upper Jurassic and Lower Cretaceous lead, which has a fair to medium size, main
risk is trap intetgrity as Base Seal can be destroyed in these leads. Its believed to be gas prone.
Lead 2 is a Upper Jurassic/Lower Cretaceous lead, with small to fair size, main risk is source.
The lead is supposed to be gas prone.
Lead 3 as lead 2.
Lead 4 is a Upper Cretaceous lead, with same characteristics as lead 1.
Lead 5 and 6 are Triassic to Lower/Middle Jurassic leads, with a potential for Upper Jurassic
in Lead location 6. Main risk is trap integrity due to fault dependency to make medium to
large volumes, otherwise the risk is moderate to small volumes. Reservoir characteristics are
also a matter to be concerned about.
Lead 7 is a Triassic together with potential other levels in same area. Main risk is reservoir
together with trap integrity.
5. Quadrants 31, 32, 35 and 36
Figure 1. Prospect/ Lead Opportunities within Quadrant 35 and 36 – APA2006 acreage
Within the offered APA2006 area, Valioso (UK) Ltd has identified 8 prospect/ lead
opportunities.
These opportunities are outlined in figure 1 above.
Lead 1 is identified within Blocks 31/3 and 32/1 and is identified as a large tilted fault block
at Upper Jurassic and Middle/Lower Jurassic levels. This lead could contain a Upper
Jurassic/Lower Cretaceous stratigraphic lead associated with it.
Lead 2 is identified within Block 36/10, as a Middle/ Lower Jurassic tilted Fault Block.
Lead 3 is identified within Block 36/7 as Upper Jurassic and Lower Cretaceous lead.
Lead 4 is identified within Block 36/7 as Lead 3.
Lead 5 is identified within Blocks 35/8 and 35/9, mainly in latter Block. This is a Lower
Cretaceous Lead
Lead 6 is identified within Block 35/8
6. Lead 7 is identified within Block 35/9
Lead 8 is identified within Blocks 35/8 and 35/5, mainly the first block.
The unnamed lead in Blocks 36/4 and 36/7 is assumed to be Aptian Sand wedge stratigraphic
trap. Associated with this lead is several other leads found in same geographic area, although
various levels from Jurassic and upwards, even potential Basement traps. GIIP approximately
25 x 109 Sm3.
7. Quadrants 3, 4, 5, 9 and 10
Valioso (UK) Ltd has knowledge of this area through work in many studies performed in the
period 1999-2004.
Some of this acreage has been licenced since Valioso (UK) Ltd has worked here, however
few if any plays in the leads/ prospects identified in this region has been penetrated nor tested.
There are identified leads/ prospects at Paleocene sands in the Siri Fairway system, and at
Cretaceous Chalk levels, in addition to potential deeper intervals in Cretaceous and even
deeper levels. However the latter two intervals are not covered in this report.
There are identified 19 various leads/ prospects in this area, they range from anomlies to
strctures and stratigraphic traps. We will not discuss all details around the various leads/
prospects in this report, since this will be possible to do at a later stage if Revus decide to
work in this area in APA2006.
Lead 1 is identified in Block 3/6 within the Palaeocene sands and Chalk levels, see figure
below, however the risks associated with the various levels are quite different due to mainly
trap integrity. Depths of this lead is around 2000 meters. The lead is associated with salt
Diapir, however not dependant upon seal against this. There is also a potential for Oligocene
sand traps in this area. Source is the main risk for this lead. The lead is assumed to have a
volume in place in Paleocene interval of around 70-150 x 106 Sm3 oil at Chalk level around
120 x106 Sm3, both cases with associated gas phase.
8. Lead 1 geo-scetch
Lead 2 is identified mainly in Block 4/4 and stretches into Danish sector as well. A well has
been drilled on the crest of the SE flank of the lead on the Danish sector. This well had no
Paleocene sands. There was oil shows in this well in the Chalk interval. The Chalk was of
poor quality in the well location.
Paleocene sands are deposited around the rim of the Salt structure which has formed the trap
of this lead. It is assumed a stratigraphic trap at this level. Main risk is source and trap
integrity due to shallow faults at crest of structure. GRV is approximately 61 x 106 m3.
Lead 2 geo-scetch
Lead 3 is located mainly in Block 4/4 with some portions in Blocks 10/10 and 4/1. The lead is
similar to lead 1, but the salt diaper is shallower at this location. Paleocene is main target with
potential but very high risk at Chalk level. The lead is at approximately 1700 meters with a
GRV of approximately 20 x 106 m3.
9. Lead 3 geo-scetch
Lead 4 Is located in Block 4/2 and is a Paleocene interval lead.
Lead 5 is located in Block 4/2 as well, defined as a Paleocene lead at approximately 1400
meters depth. The trap is a stratigraphic trap within Hermod level sands at around 1300
meters level, associated with a possible DHI.
Lead 6 is located in Block 5/1 and is defined by an anomaly at Oligocene level (Grid Fm?).
Leads 7,8 and 11-16 are all defined by anomalies at Oligocene level (Grid Fm?).
Lead 9 is located in Block 10/12 and is defined as a low relief structure at Paleocene level
with a approximately 100 x 106 m3 GRV. Source is the main risk for this lead.
Lead 9 Geo-scetch
Lead 10 is located in Block 10/11 and 10/12 and is defined as a Paleocene level lead at
approximately 800 meters depth with a GRV of approximately 1500 x106 m3.
Main risk is reservoir distribution together with source.
10. Lead 10 Geo-Scetch
Lead 17 is located in Block 3/3, no information about this lead available at the time of writing
the report.
Lead 18 is located in Blocks 3/1, 3/2 and 3/5, no information available at time of writing the
report.
Lead 19 is located in Block 3/5, no information available at time of writing the report.
11. Quadrants 8, 17 and 18
Valioso (UK) Ltd has knowledge of several leads/ prospects within these quadrants, but can
only tell about Stratigraphic levels and Blocks they can be identified within, without
disclosing the actual locations without knowlege of Revus Energy ASA’s seismic database in
these blocks at the moment of report writing.
26/11-L1
26/10 and 17/1-L1
17/1-L2 M – U Jr Horst
17/3-P1 M Jur
17/4-L1 U Jur
17/4-L2 Paleozoic
17/4-L3 U Jur
17/5-L1 M Jur Horst
17/7-L1 U Jur
17/7-L2 Age Uncertain ?
17/7-L3 U Jur
17/9-L1 L Jur ?
17/9-L2 M Jur
17/10-L1 Jur
17/10-L2 U Cret
17/10-L3 U Cret
12. 17/10-L4 U Cret
17/11-L1 Jur
17/11-L2 Jur
17/11-L3 U Cret
17/11-L4 Age uncertain ?
17/11-L5 Jur
17/11-L6 Jur
17/12- BREAM – M Jur
17/12- L1 U Cret
17/12- BRISLING – M Jur
17/12-L2 Age Uncertain ?
18/10-L1 M Jur
13. Quadrant 25
Paleocene and Eocene intervals are the most promising intervals in this area, however other
intrervals should not be rule dout as they oculd provide prospective levels as well.
11 potential leads plus one additional potential lead is identified within this area for
APA2006.
All leads are supposed to be in Paleocene/Eocene levels, and to be of small to medium sized
leads, all semi-stratigraphical or pure structural traps. However seismic used to perform this
screening was not optimal at the time of study, and we know there has been done work later
with new seismic which confirms these leads, and some have been classified to prospects
later. However this werk can not be included herein.
Mainly blocks 25/3 and 25/6 are found to be most prospective as they also lead into prospects
found in seismic area in Quadrant 26. In this areas larger leads and prospects are found, which
are very interesting for further prospecting as well.
14. Quadrant 2
Valioso (UK) Ltd has identified a salt related lead in Block 2/8 which oculd be of interest in
APA2006 evaluation. Two wells have drilled in its vicinity, and at crestal part of salt diaper,
without testing the potential of a fault dependant trap within Paleocene and/ or Chalk interval.
Its estimated a 60 x 106 m3 in STOIIP for this lead.
