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Plaats in dit vak een foto uit de corporate beeldenbank(11 cm x 25,4 cm, 150 dpi)
Shallow Gas Play in The Netherlands Takes Off
Mijke van den Boogaard & Guido HoetzProspex 2012 London, 13 December 2012
Outline
1. EBN B.V.
2. Shallow Gas in the Dutch Offshore Definition Geological setting
3. Why Explore for Shallow Gas?
4. Shallow Gas Inventory EBN
5. Case Study (Open Acreage)
6. Summary13/12/2012 2
1. EBN B.V.(Booth 10)
3*1 bcm (Nm) 37.3 bcf
2011Productive fields (EBN participation) 258Exploration participations 47Production participation 125Gas sales volume EBN share (bcm*) 30Reserves EBN share (bcm) 431Exploration wells drilled 19Production wells drilled 38New fields in development 12Payments to state (billion ) 5.8
EBN B.V.
State participant in exploration & production in The Netherlands
42. Shallow Gas in the Dutch OffshoreDefinition
Shallow Gas (SG) = gas in unconsolidated sands, Miocene-Pleistocene
6-6-2012
300 -
800m
Shallow fields
Shallow leads
Eridanos delta: Late-Cenozoic river delta system In NL: Late Miocene Early Pleistocene
TNO, 2011
6-6-2012
2. Shallow Gas in the Dutch OffshoreGeological Setting
London
5Reference: Kuhlmann et al., 2004
Denmark
Top Chalk (Mid-Paleocene)
MMU
Salt domes
Amplitude anomalies
P
a
l
e
o
g
e
n
e
N
e
o
g
e
n
e
SW NE
~1000 m
~70 km
2. Shallow Gas in the Dutch OffshoreGeological Setting
6Reference: Kuhlmann et al., 2004
Outline
1. EBN B.V.
2. Shallow Gas in the Dutch Offshore Definition Geological setting
3. Why Explore for Shallow Gas?
4. Shallow Gas Inventory EBN
5. Case Study (Open Acreage)
6. Summary13/12/2012 7
3. Why Explore for Shallow Gas?History
Occurrence shallow leads known since early 70s
Presence producible shallow gas proven by wells in 80s
Early water breakthrough & sand production expected fields not developed
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3. Why Explore for Shallow Gas?History
Currently 3 successfully producing fields:- A12-FA (2007)- F02a-B-Pliocene (2009)- B13-FA (2011)
Technical breakthrough (e.g. sand control in horizontal wells)
6-6-2012 9Reference: Chevron, Oil&Gas Journal, 2009
3. Why Explore for Shallow Gas?
Shallow Gas Offshore NL
Today:
3 fields producing
5 fields under development/
development pending
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A12-FA
B13-FA
F02a-B-Pliocene
3. Why Explore for Shallow Gas?
1. New technology proven successful for SG developments
2. New 3D seismic points to more opportunities
3. Significant volumes identified: 36-118 bcm GIIP, 18-62 bcm URRelatively high POS
4. Marginal field tax incentive applicable (2010, www.nlog.nl) & Guaranteed gas off take
13/12/2012 11
Outline
1. EBN B.V.
2. Shallow Gas in the Dutch Offshore Definition Geological setting
3. Why Explore for Shallow Gas?
4. Shallow Gas Inventory EBN
5. Case Study (Open Acreage)
6. Summary13/12/2012 12
4. Shallow Gas Inventory EBNIdentify Leads
Identify Shallow Gas (SG) leads: High amplitude seismic reflection indicative for gas Mapping of bright spots (BS) defines SG leads
6-6-2012 13
4. Shallow Gas Inventory EBNIdentify Leads
13/12/2012
Select most attractive leads based on:
1. Well data: gas shows, log data
2. Bright spot classification
14
Shallow fields
Shallow leads
4. Shallow Gas Inventory EBNBright Spot Classification
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0
1
2
3
Area
Stacked
reservoirs
DepthVertical
relief
Trapping
geometry
F04-P1
1 = L
2 = M
3 = H
Lead x
4WDC (e.g. A12-FA)FDC (e.g F02a-B-Pliocene)Strat. trapVery shallowSmall size
P
r
o
s
p
e
c
t
i
v
i
t
y
?
4. Shallow Gas Inventory EBNBright Spot Classification
13/12/2012
4WDC type
Area: M/H
Depth: M/H
Vertical relief: L/M
Number of Stacked
Reservoirs: L/M/H
4WDC
FDC type
Area: M/H
Depth: M/H
Vertical relief: M/H
Number of Stacked
Reservoirs: L/M/H
FDC
BS type:
16
6 km
2.5 km
39
26%
9; 6%104
68%
All Lead Types
4WD type BS
FDC BS
Other BS
4. Shallow Gas Inventory EBNSize of the Prize
15 leads analysed in detail:
Total GIIP P50-P10: 12 22 bcm*
Several large leads to be analysed
30%
11
3
Leads in Open Acreage
4WD type BS
FDC BS
0
5
10GIIP [BCM] P10GIIP [BCM] P50
*1 bcm (Nm) 37.3 bcf
4. Shallow Gas Inventory EBNBright Spot Classification
13/12/2012 18
Outline
1. EBN B.V.
2. Shallow Gas in the Dutch Offshore Definition Geological setting
3. Why Explore for Shallow Gas?
4. Shallow Gas Inventory EBN
5. Case Study (Open Acreage)
6. Summary13/12/2012 19
5. Case Study 1: F04/F05-P1 (Open Acreage)
6-6-2012www.ebn.nl
20
Detailed factsheets on www.ebn.nl
5. Case Study 1: F04/F05-P1 (Open Acreage)
6-6-2012www.ebn.nl
21
Detailed factsheets on www.ebn.nl
GIIP (BCM)Zone P90 P50 P10Sand 1 0.4 1.0 2.0Sand 2 0.4 0.8 1.6Sand 3 0.4 0.9 2.0Total 1.2 2.7 5.6
10%
12%
1 bcm (Nm) 37.3 bcf
6. Summary (1/2)Shallow Gas Play in The Netherlands Takes Off
Northern offshore NL: SG in Cenozoic unconsolidated sediments (Eridanos Delta)
Extensive occurrences of SG known from seismic & wells
Why explore for SG now?1. 3 Successfully producing fields (sand measures in horizontal wells) 2. Area largely covered by 3D seismic3. Significant shallow gas potential (18 62 bcm UR)4. Marginal field tax incentive applicable & guarantied gas off take
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6. Summary (2/2)Shallow Gas Play in The Netherlands Takes Off
Shallow Gas Inventory EBN- Bright Spot Classification- 152 leads in northern offshore NL- 48 attractive leads (14 open acreage)
Case study (open acreage)- F04/F05-P1: 2.7 5.6 bcm GIIP (P50-P10)
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Remaining challenge: find cost efficient solutions due to- Relatively small leads- Distance to infrastructure
1 bcm (Nm) 37.3 bcf
TNO, Chevron, Dana, ONE, Total EBN B.V., in particular:
Berend Scheffers Eveline Rosendaal
See you in booth 10!
Acknowledgements
13/12/2012 24