REGIONAL ASSESSMENT OF CBM POTENTIAL REGIONAL ASSESSMENT OF CBM POTENTIAL IN POLISH SILESIAN COAL BASIN IN POLISH SILESIAN COAL BASIN (GeoCapacity contribution) (GeoCapacity contribution) Adam W Adam Wó jcicki, jcicki, PBG PBG - Geophysical Exploration Company Geophysical Exploration Company www.pbg.com.pl www.pbg.com.pl CCS CCS – Response to Climate Change, Regional Workshop Response to Climate Change, Regional Workshop for CE & EE countries, Zagreb, February 2007 for CE & EE countries, Zagreb, February 2007
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REGIONAL ASSESSMENT OF CBM POTENTIAL REGIONAL ASSESSMENT OF CBM POTENTIAL IN POLISH SILESIAN COAL BASININ POLISH SILESIAN COAL BASIN
CCS CCS –– Response to Climate Change, Regional Workshop Response to Climate Change, Regional Workshop for CE & EE countries, Zagreb, February 2007for CE & EE countries, Zagreb, February 2007
The (Upper) Silesian Coal Basin (SCB) is located mostly in southern Poland and continues into territory of Czech Republic, where its small part extends. Hard coal occurs here within
formations of Upper Carboniferous (Namurian and Westphalian) and exploitation dates back since XVIII century. In Polish part coal (usually coking or steam) is mined in 39 collieries,
which produce about 90 mln tonnes a year. Carboniferous is covered in south by Miocene and Carpathian flysch and in north either by Quarternary sediments, often quite thin, rarely by
Triassic, or uncovered at all. In a dozen of collieries methane is exploited together with coal(depth range in both cases is usually 500-1000 m). CBM only is exploited in two sites in
southern part of SCB (in one well and one shaft). ECBM-CO2 experiments have been carried out under RECOPOL and MOVECBM projects of EU 5th and 6th Framework Programme there.
after IGME 5000, BGR, 2005
POLAND POLAND –– CASTOR WP1.2CASTOR WP1.2
Twenty three Coal/CBM fields of PGIP > 1 Bcm in the Silesian Coal Basin were considered. They have estimated storage capacity of several Mt to several tens Mt each, but the most of these assessed CBM reserves are no deeper than 1 km. Total
storage potential for the Polish part of SCB (up to 2 km) might reach a few Gtonnes.In southern part of the SCB, RECOPOL experimental ECBM site is located at Kaniów.
0POLAND POLAND –– CASTOR WP1.2CASTOR WP1.2
METHODOLOGY APPLIED IN CASTOR WP1.2METHODOLOGY APPLIED IN CASTOR WP1.2
-- known CBM reserves after PGI data (national geological survey)known CBM reserves after PGI data (national geological survey)
-- CBM reserve means CH4 content of over 4.5 m3/t of coalCBM reserve means CH4 content of over 4.5 m3/t of coal
-- coal/CBM fields beyond current range of mining activities, of coal/CBM fields beyond current range of mining activities, of reserves above 1 Bcm PGIP, and covered by a good sealreserves above 1 Bcm PGIP, and covered by a good seal
-- Storage Capacity = PGIP x ER x CO2densityStorage Capacity = PGIP x ER x CO2density
-- Exchange Ratio Exchange Ratio CO2:CH4CO2:CH4 (ER) = 2; CO2density = 2 kg/m3(ER) = 2; CO2density = 2 kg/m3
-- Storage capacity for selected 23 fields = 470 MtStorage capacity for selected 23 fields = 470 Mt
-- Typical depth range is 500Typical depth range is 500--1000 m (usually there is no reliable 1000 m (usually there is no reliable information on reserves below 1000 m, with minor exceptions).information on reserves below 1000 m, with minor exceptions).
of tops and of tops and floors of four floors of four
principal coalprincipal coal--bearing bearing
complexes complexes of Upper of Upper
CarboniferousCarboniferous(left (left -- floor of floor of Paralic series,Paralic series,the lowermost the lowermost complex) after complex) after
Geological Atlas Geological Atlas of SCB, 2005 of SCB, 2005
(PGI).(PGI).area size:area size:
~ 100 x 100 km~ 100 x 100 km
REGIONAL ASSESSMENTREGIONAL ASSESSMENT
GeoCapacityGeoCapacity
INPUT: Digitised structural maps of Upper Carboniferous formatioINPUT: Digitised structural maps of Upper Carboniferous formationsns
Top of Carboniferous Floor of Cracow Ss. series Floor of Mudstone. series
Floor of Upper Silesian Ss. series Floor of Paralic series Horizons superimposed
REGIONAL ASSESSMENTREGIONAL ASSESSMENT
GeoCapacityGeoCapacity
COAL BEARING CARBONIFEROUS OF (UPPER) COAL BEARING CARBONIFEROUS OF (UPPER) SILESIAN COAL BASIN (after R. Osika, 1990): SILESIAN COAL BASIN (after R. Osika, 1990):
No. Geological unit Max. Coalthickness [m]
Coalseams [%]
1 Cracow Ss. series 48 3
2 Mudstone series 112 5
3 Upper Silesian Ss. series 80 7
4 Paralic series 99 2
REGIONAL ASSESSMENTREGIONAL ASSESSMENT
GeoCapacityGeoCapacity
INPUT: Coalbed INPUT: Coalbed Methane content at Methane content at depth of 1500 m depth of 1500 m b.t.s., after Central b.t.s., after Central Mining Institute, Mining Institute, Katowice, PL, 2005Katowice, PL, 2005
REGIONAL ASSESSMENTREGIONAL ASSESSMENT
GeoCapacityGeoCapacity
OUTPUT: OUTPUT: Thickness maps Thickness maps of Upper of Upper Carboniferous Carboniferous complexes and complexes and for depth for depth ranges; left ranges; left ––thickness of thickness of Upper Upper Carboniferous Carboniferous formations formations covered by a covered by a good seal (see good seal (see slide 3) in depth slide 3) in depth range range 11--1.5 km1.5 km0
50
100
150
200
250
300
350
400
450
500
thickness(1000-1500
m b.t.s.)Upper Carboniferous
Paralic series
4280 4300 4320 4340 4360 4380 4400 4420
5480
5500
5520
5540
5560
5580
5600
Kaniow
REGIONAL ASSESSMENTREGIONAL ASSESSMENT
GeoCapacityGeoCapacity
OUTPUT: OUTPUT: EstimationsEstimationsof gas in of gas in place per place per km2 km2 obtained forobtained forgeometricgeometric--parametric parametric model model constructedconstructedon the base on the base of INPUT of INPUT data.data.
4280 4300 4320 4340 4360 4380 4400 4420X, km
5480
5500
5520
5540
5560
5580
5600
Y, k
m
Kaniow
0
40
80
120
160
200
240
280
320
360
PGIP [mln m3/km2]
REGIONAL ASSESSMENTREGIONAL ASSESSMENT
GeoCapacityGeoCapacity
METHODOLOGY on calculating regional CO2 storage capacities:METHODOLOGY on calculating regional CO2 storage capacities:
-- Calculating of volume of Upper Carboniferous formations at a Calculating of volume of Upper Carboniferous formations at a certain depth range (e.g., 0.5certain depth range (e.g., 0.5--1; 11; 1--1.5; 1.51.5; 1.5--2 km; 2 km; slide 6slide 6))
-- Assuming a percentage of coal seams in these formations (after Assuming a percentage of coal seams in these formations (after R. Osika, 1990; R. Osika, 1990; slide 7slide 7))
-- Calculating coal seams' volume and mass (assuming density)Calculating coal seams' volume and mass (assuming density)
-- Multiplying mass by a constant absorption capacity coefficient Multiplying mass by a constant absorption capacity coefficient (after F. May, 2004 (after F. May, 2004 -- GESTCO) and CO2 density we have GESTCO) and CO2 density we have adsorption potentialadsorption potential
-- Multiplying coal mass by averaged methane content (Multiplying coal mass by averaged methane content (slide 8slide 8), ), replacement ratio (slightly variable with depth and/or coal rankreplacement ratio (slightly variable with depth and/or coal rank) ) and CO2 density we have exchange potential and CO2 density we have exchange potential -- storage capacitystorage capacity
REGIONAL ASSESSMENTREGIONAL ASSESSMENT
GeoCapacityGeoCapacity
EXAMPLE on calculating regional storage capacities:EXAMPLE on calculating regional storage capacities:
Storage capacity estimated for the depth range is Storage capacity estimated for the depth range is 2120 Mt2120 Mt; for ; for depth range 1500depth range 1500--2000 m, the storage capacity is 2000 m, the storage capacity is 1914 Mt1914 Mt..
According to results of RECOPOL project there are more favourablAccording to results of RECOPOL project there are more favourable e conditions for ECBM at a depth range below 1000 m (preferably conditions for ECBM at a depth range below 1000 m (preferably 10001000--1500 m) than at depth range 5001500 m) than at depth range 500--1000 m, where CBM 1000 m, where CBM resources are relatively well known and assessed, but more or leresources are relatively well known and assessed, but more or less ss affected by ongoing mining activities. Conditions at depth rangeaffected by ongoing mining activities. Conditions at depth range15001500--2000 m are less known.2000 m are less known.
CONCLUSIONSCONCLUSIONS
GeoCapacityGeoCapacity
-- In CASTOR WP1.2 (for Poland) figures on CO2 storage capacities In CASTOR WP1.2 (for Poland) figures on CO2 storage capacities in coal/CBM fields, based on known CBM reserves, referred in coal/CBM fields, based on known CBM reserves, referred mostly to depth range of 500mostly to depth range of 500--1000 m.1000 m.
-- Estimations of a regional storage capacity (the whole area of Estimations of a regional storage capacity (the whole area of Polish part of the Silesian Coal Basin) for deeper coal seams giPolish part of the Silesian Coal Basin) for deeper coal seams give ve value of one order of magnitude bigger (about 4 Gtonnes).value of one order of magnitude bigger (about 4 Gtonnes).
-- According to RECOPOL results (CMI) the most favourable According to RECOPOL results (CMI) the most favourable conditions for ECBM might be at a depth range of 1000conditions for ECBM might be at a depth range of 1000--1500 m 1500 m (but this does not exclude CBM resources appearing in other (but this does not exclude CBM resources appearing in other depth ranges depth ranges –– coal rank and dynamic reservoir properties coal rank and dynamic reservoir properties matter).matter).
ACKNOWLEDGEMENTSACKNOWLEDGEMENTS
I would like to thank prof. PaweI would like to thank prof. Pawełł KRZYSTOLIK of Central Mining KRZYSTOLIK of Central Mining Institute, MikoInstitute, Mikołłóów/Katowice, and his cow/Katowice, and his co--workers, for information workers, for information on outcome of RECOPOL project and for information on methane on outcome of RECOPOL project and for information on methane content in deep coal seams of Silesian Coal Basin.content in deep coal seams of Silesian Coal Basin.
