Hydrocarbon Reserves
in the Netherlands
Poster 9 Prospex 2011 mjvg
Information through www.nlog.nl
The stranded fields portfolio in the Netherlands consists of some 100 fields. Encouraging the production of these already discovered, but as yet undeveloped fields, should unlock significant volumes of gas reserves.
The Dutch government is committed to ensuring an attractive mining climate in the Netherlands and has introduced an additional measure that involves marking underused acreage as fallow so as to ensure easier access. After the July 2011 publication (see example below) of the definitive fallow acreage classification, additional stranded fields are located in fallow acreage enabling easier access in the future. General information on the stranded fields portfolio can be found on www.nlog.nl.
Stranded fields in the Netherlands
Location
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^ _
^ _
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^ _
^ _
^ _
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5
8 7
6 4 5
2 3 1
9 6 2 3
7 8 4 5 1 2
8 9 7
5 6 4
3 1 2
758 4 1
8 9 7
5 6 4
2 3 1
8 9 7
5 6 2 3 1
9 7 8
5 6 4
1 3
9 6 3
7 8 9
7
5 6 4
1 2
9 8
7
6 5
4
3 1 2
9 6
9 8 7
5
10
1314 11
17 16
14 15 13
11 12 10
18 15
10
1718 16
13 14
11 12 10
17 18 16
14 15 13
11 12 10
16 16 18
1415 13
10 11
17 18 16
14 15 13
11 12 10
16 17
15 13 14
11 12 10
18 15 12
1718 16
1314 10
17 18 16
14 15 13
11 12 10
3
S R
P Q
O
M N K L
J
G E F
D
B A
7°0'0"E 6°0'0"E
5°0'0"E 4°0'0"E
3°0'0"E 2°0'0"E
55°0'0"N
54°0'0"N
53°0'0"N
52°0'0"N
51°0'0"N
0 50 Km
Gas and oil accumulations and pipelines situation at January 1st 2011
Oil pipeline Gas pipeline Oil accumulation Gas accumulation
Dry hole
' Gas show
d^_" d Gas well
Accumulations Developed Development Total UGS* planned 2011-2015
Groningen 980 - 0 980
Others Territory 130 19 11 160
Continental Shelf 122 0 42 164
Total Gas (bcm) 1232 19 53 1304
*UGS Cushion gas, for explanation see paragraph “Developed accumulations”
Area Developed Undeveloped Total
Territory 4.2 29.5 33.7
Continental Shelf 4.3 7.7 12.0 Total Oil (MMm3) 8.5 37.2 45.7
S R
P Q
O
M N K L
J
H G
F E
D
B
8 7
5 6 4
2 3 1
9 6 3
8 7 4 5 1 2
8 9 7
5 6 4
3 1 2
758 4 1
8 9 7
5 6 4
2 3 1
8 9 7
5 6 4
2 3 1
9 7 8
6 5
4
2 3 1
9 6 3
7 8 9
7
5 6 4
2 3 1
9 7 8
6 4 5
3 1 2
9 6
7 9
10
16 14 13
11 10
18 16 17
14 15 13
11 12 10
18
10 11
1718 16
14 15 13
11 12 10
17 18 16
14 15 13
11 12 10
17 18 16
1415 13
11 10
17 18 16
14 15 13
11 12 10
17 18 16
15 13 14
12 10 11
18 15 12
1718 16
1314 10
17 18 16
15 14
13
11 12 10
520000
520000
580000
580000
640000
640000
700000
700000
760000
760000
5720000 5720000
5810000 5810000
5900000 5900000
5990000 5990000
6080000 6080000
Legend
Stranded gas field
Undev. gas field prod. expected within 5 years Producing gas field
Abandonned Gasfield Gas storage
Stranded oil field
Undev. oil field prod. expected within 5 years Producing oil field
Abandonned oil field Explo. Lic. HC Applied for Explo. Lic. HC
Prod. Lic. HC Applied for Prod. Lic. HC
Storage. Lic. Applied for Storage Lic.
Fact sheet L12-FD Q4 2009
General information
The L12-FD gas field is situated in the L12d concession (Tullow), straddling the boundary with L09a. It was discovered in 1988 with exploration well L12-05. The gas is trapped in the Slochteren Formation (ROSL). Complete results of RFT’s are available on the composite well log.
The L12-FD field is fault bounded on all sides. The reservoir is penetrated by one exploration well. The Slochteren sandstone (ROSL) reservoir comprises mainly aeolian and fluvial sediments. The field has not been developed and currently lies in Tullow acreage.
Sequence of events
Date Event
13-11-1987 Spud date well L12-05 (NAM) 08-01-1988 TD reached (3708 m ah) 18-12-1987 to 03-01-1988 RFT’s 3095,7 - 3545,5 m ah
18-12-1987 RFT sample 3267,5 m ah (ROSLU) 21-12-1987 RFT sample 3127,3 m ah (ZEZ1C) 23/27-01-1988 Production tests (ROSLL & ROSLU)
02-02-1988 Completion date well L12-05
19-03-1988 Production license L12a application by NAM 11-03-1990 Award production license L12a to NAM
25-09-2008 License L12a split up in L12a (to GDF) and L12d (to Tullow)
Plug data
Depth m ah
Porosity
%
Horizontal permeability mD
Grain density g/cm3
Stratigraphy
3417.5 5.4 0.0001 2.722 ROCLA
3429.2 10.28 1.9 2.68 ROCLA
3430.1 14.1 4.7623 2.666 ROCLA
3430.4 13.2 3.8504 2.665 ROSLL
3430.7 19.96 59 2.6874 ROSLL
3430.8 15.9 26.7498 2.654 ROSLL
3431.2 6.7 0.0001 2.694 ROSLL
3432.4 17.03 31 2.7088 ROSLL
3432.6 14.8 13.4762 2.684 ROSLL
3432.8 8.4 0.0001 2.692 ROSLL
3434 12.1 3.1411 2.644 ROSLL
3434.5 7.9 0.0001 2.706 ROSLL
More detailed information of this interval (well L12-05) is available
Reservoir data
Geological unit RGD & NOGEPA (1993)
Top m ah
Base m ah
Net m ah
Porosity
%
Saturation -
GWC m nap Lower Slochteren Member
(ROSLL) 3430 3438 8
Upper Slochteren Member
(ROSLU) 3260 3271 11
Hydrocarbon specifications
Reservoir CH4 % CO2 % N2 % GHV MJ/M3
Slochteren Formation
(ROSL) 86,5 1,5 1,5 44,1
Resource figures undeveloped fields in billions of Sm3
Resource group Number GIIP reserves
Not producing fields production start within 5 years 43 55
Not producing fields production start not within 5 years (Stranded fields) 67 90 40-50
For information on Exploration and Production issues and E&P data see the Netherlands Oil and Gas Portal www.nlog.nl & www.ebn.nl
Location of Gas & Oil fields Gas and oil resources in the Netherlands as at 1 January 2011 (bcm)
Natural resources and geothermal energy in the Netherlands
Annual review 2010
Natural resources and geothermal energy in the Netherlands
Annual review 2010
For more information:
www.nlog.nl
Ministry of Economic Affairs, Agriculture and Innovation Directorate General for Energy, Telecom and Markets June 2010
Focus on Dutch ga s
2011
References:
Marginal field production
The average price for gas from small fields and thus average revenue per m3 varies from year to year, but the Dutch gas price has generally remained around c 0.20/m3. Production costs per m3 of gas have all increased, partly as a result of production phase and increasing prices in the sector. Consequently, net profit per m3 of produced gas has decreased, but was still around 30% in 2010.
0 10 20 30 40 50 60 70 80 90
2001 2003 2005 2007 2009 2011 2013 2015 2017 2019 2021 2023 2025 2027 2029 2031 2033 2035
Volume (billion m3 Geq)
Historical production 'small fields' Historical production Groningen Field
Expected supply from developped accumulations
Expected supply from as yet undevelopped accumulations
Expected supply from as yet undiscovered accumulations
Expected supply Groningen accumulation based on production plan (from 2021 onwards) Proportionally profiled production allowance Groningen accumulation (2011 - 2020)
0 5 10 20
15 25 30
2006 2007 2008 2009 2010
price (eurocent)
Margins of small field production
finding costs depreciation production costs tax
net profit
Fact sheet L12-FD Q4 2009
Volumes
Reservoir GIIP
in 109 m3
Reserves in 109 m3
Proven Expected Possible Lower Slochteren Member
(ROSLL) 0,5 - 1 0 - 0,5
Productivity
Reservoir Interval m ah
Reservoir pressure in bar
Reservoir Temp.
°C
CGR -
WGR -
Qmax m3/d Lower Slochteren Member
(ROSLL) 3430 - 3438 482 (3390 m ah) 125 12 8 11 000
Upper Slochteren Member
(ROSLU) 3261,5 - 3270,5 436 (3220 m ah) 117 2 3 114 000
More RFT and production test information is available on the composite well log
Well status
L12-05, Plugged and abandoned
Infrastructure
The NOGAT gas pipeline lies approximately 4,5 km to the west. The closest platforms are L09-B (gas facility) and L15-A which lie respectively approximately 8 kilometers to the northeast and 17 kilometers in southern direction.
Public References
RGD & NOGEPA 1993, Stratigraphic nomenclature of the Netherlands, Mededelingen Rijks Geologische Dienst, Nr. 50
SodM 1988, Proces-Verbaal nr. 647. (Official Report of the State Supervision of the Mines on the proven occurrence of gas/oil in a well)
NAM 1988: Composite well log, L12-05 On open file
For more information stranded Oil&Gas fields in the Netherlands:
http://www.nlog.nl/nl/reserves/reserves/stranded.html For released Well data and Seismic data contact DINOloket:
http://www.dinoloket.nl
For geological maps of the deep subsurface of the Netherlands:
http://www.nlog.nl/nl/pubs/maps/geologic_maps/NCP1.html
Liability
Facts and figures supplied on this fact sheet have been compiled carefully. Great care has been taken to ensure correct coverage of all information. TNO-NITG and the Ministry of Economic Affairs do not accept any liability for any direct or indirect damage of any kind ensuing from the use of information published on this sheet.
The small fields policy of the Netherlands offsets some of the risks inherent to the industry and thus offers gas producers three main benefits:
• steady production close to the maximum capacity of a field;
• offtake and transportation guarantee;
• market-based prices and conditions.
acreage classified as fallow (passive)
