Upload
others
View
2
Download
0
Embed Size (px)
Citation preview
IntroductionQueensland has sedimentary basins ranging in age from Precambrian to Tertiary with a variety of geological settings and histories (Figures 1 & 2).
In Queensland, the systematic exploration for conventional petroleum commenced in the early 1960s. Conventional petroleum exploration has resulted in the discovery of commercial accumulations in the Adavale Basin, the Bowen and Surat basins, and the Cooper and Eromanga basins.
Exploration for coal seam gas (CSG) commenced in the 1980s. Since the mid-1990s, CSG has grown to become the dominant source of gas in Queensland, comprising over 95% of the gas produced and over 99% of the remaining proved and probable (2P) gas reserves. Commercial production of CSG is sourced from the Bowen and Surat basins and is the gas supply for the state's export liquefied natural gas (LNG) industry based in Gladstone.
Outside of the producing CSG and key petroleum basins, many areas of the state remain largely under-explored.
More than 5000 kilometres of transmission pipelines connect producing gas fields to markets within Queensland, particularly southeast Queensland, Gladstone and Mount Isa.
Petroleum exploration 2015–16Petroleum (including CSG) exploration expenditure in Queensland for 2015–16, reached A$204.7 million compared with A$751.6 million in 2014–15 (www.abs.gov.au). The level of exploration expenditure is a reflection of the current global markets and the move by companies from the exploration phase to one of development and production of their CSG reserves to service the export LNG industry. Exploration for other unconventional resources, including shale gas, basin-centred gas and tight gas, is expected to continue, particularly in the Cooper and Bowen basins.
Drilling rates have maintained high levels since the record of 1634 wells drilled in 2013–14 with 700 wells drilled in 2015–16. This was made up of 685 CSG wells and 15 petroleum wells (Figure 3). Of the 685 CSG wells, there were 3 exploration wells, 18 appraisal wells, 663 development wells and one injection well.
The initial high rate of drilling was required to ensure adequate gas could be produced to ramp up the three LNG plants. A slight drop in drilling occurred as activities focus towards production while ongoing drilling will be required as these reserves are depleted.
Petroleum (excluding CSG) exploration in Queensland decreased from the previous year. In 2015–16, 15 petroleum wells, made up of 8 exploration, 6 appraisal and 1 development wells were drilled. This compares with 37 wells drilled in 2014–15.
Coal seam gasCSG is currently the dominant driver of drilling activities and gas production in Queensland. Exploration for other petroleum sources, such as shale gas and tight gas, is only just beginning in Queensland. The presence of gas in deeper parts of sedimentary basins indicates that formations have potential to contain significant tight gas resources.
Queensland has two basins currently producing CSG, the Bowen and Surat basins (Figures 4 & 5). A number of other basins have potential and are currently being explored.
January 2017
Coal seam gas production
1998–99 4 PJ
2005–06 63 PJ
2015–16 979 PJ
Coal seam gas reserves
As at 30 June 2016 41 229 PJ
Conventional gas production
1998–99 131 PJ
2005–06 142 PJ
2015–16 45 PJ
Conventional gas reserves
As at 30 June 2016 370 PJ
Quick facts (2015–16)
Department of Natural Resources and Mines
Queensland’s petroleum and coal seam gas 2015–16
MoonieOil Field
RomaGas Fields
Oil and Gas Fields
Oil and Gas Fields
SuratOil and Gas
Fields
SuratOil and Gas
Fields
DenisonGas Fields
DenisonGas Fields
GilmoreGas FieldGilmore
Gas Field
Moonie Brisbane Oil−–
Ballera – RomaBrisbane
Pipeline
–
Slurry
Pipeline
Jackson
Mount
Isa
Mount
Isa
To Port BonythonTo Adelaide To Sydney To Newcastle
Gas Pipeline
Gas Pipeline
GEORGINA BASIN
COOPERBASIN
WARRABIN TROUGH
ADAVALEBASIN
GALILEEBASIN
SURATBASIN
BOWENBASIN
DRUMMONDBASIN
BURDEKINBASIN
ISA SUPERBASIN
CARPENTARIABASIN
LAURABASIN
CLARENCE-MORETON
BASIN
IPSWICHBASIN
STYXBASIN
MARYBOROUGHBASIN
NAMBOURBASIN
EROMANGABASIN
MILLUNGERABASIN
EROMANGABASIN
Moonie
Gold Coast
Bundaberg
Maryborough
Gympie
Gladstone
Rockhampton
Dysart
Charleville
Jackson CunnamullaMoomba
Bollon
Roma
Blackall
Eromanga Quilpie
Longreach Barcaldine
Mackay
Bowen
Townsville
Charters Towers
Hughenden
Cairns
Karumba
Winton
Dalby
Ipswich
Injune
MilesWallumbilla
Moranbah
Emerald
Surat
BRISBANEToowoomba
Chinchilla
Ballera
Mount Isa
16A
/PG
/QP
etR
esou
rces
Cairns Population centre
Railway Proposed railway
Export Port
Conventionalpetroleum
Pipeline
Surat Basin fieldsBowen Basin fields
Oil Oil non-operational
Gas Gas proposed
Coal seam gas
Oil fields Gas fields Oil and Gas fields
Kilometres
1000 200
LNG proposed
Early Paleozoic basins
Late Paleozoic basins
Mid Paleozoic basins
Coal seam gas production (Surat)
Proterozoic basins
Coal seam gas production (Bowen)
Mesozoic basins
Figure 1: Queensland petroleum
2 Queensland’s petroleum and coal seam gas (January 2017)www.dnrm.qld.gov.au
Bowen BasinThe Permian to Triassic Bowen Basin is the birthplace of the CSG
industry in Queensland. The first commercial production began in
the Dawson River CSG area near Moura in 1996 and in the Fairview
CSG area near Injune in 1998. Currently, commercial production
occurs in the basin near Moranbah, Injune, Moura and Wandoan.
The Permian coal measures are the main targets.
CSG produced at Moranbah is sourced from the Goonyella Middle
(GM) and P seams of the Moranbah Coal Measures. Future production
is likely from the Goonyella Middle Lower (GML) seam. The overlying
Fort Cooper and Rangal Coal Measures also have potential.
Coal permeability in the Moranbah area is relatively low; CSG
production is enhanced by in-seam drilling. Development has
concentrated on seams from 200 to 500 metres (m) depth. As
the Moranbah area is located in a geological hinge zone with its
associated faulting, areas of increased permeability are expected.
At Moura, CSG is produced from the Permian Baralaba Coal
Measures. Exploration and development is concentrated on seams
around 200 to 500 m depth.
Permeabilities are less than 10 millidarcies (mD) in the Moura area.
To cope with these low permeabilities, in-seam drilling has been
utilised to enhance production.
East of Wandoan at Scotia and Peat, gas is sourced from the
Baralaba Coal Measures. The Peat and Scotia areas are located on
the Burunga Anticline and contain structurally trapped free gas.
Gas is produced from around 700 to 800 m where permeability is
enhanced by the anticlinal structure. Below 900 m, the seams are
considered sub-economic because of lower permeability.
Production from Fairview and Spring Gully is sourced from the
Permian Bandanna Formation. Three coal seams of the Bandanna
Formation have been targeted at depths ranging from 500 to 880 m.
Permeability in the Fairview and Spring Gully areas (Comet Ridge
fairway) is enhanced by their location within a large anticlinal
structure. Due to lower stress and associated fracturing, tensional
areas at the axes of anticlines and synclines are obvious targets
for enhanced permeability and production. Permeabilities are
generally higher than 50 mD. Up until 2014–15, the Bowen Basin
had been the largest cumulative CSG producing basin. Certified
proved and probable CSG reserves have remained steady.
Wel
ls d
rille
d
0
200
400
600
800
1000
1200
1400
1600
54–5
5
59–6
0
64–6
5
69–7
0
74–7
5
79–8
0
84–8
5
89–9
0
94–9
5
99–0
0
04–0
5
09–1
0
14–1
5
Year
Petroleum wells
Coal seam gas wells
16B
PG
\Gra
phs\
Pet
CS
G_w
ells
Figure 3: Annual Queensland conventional petroleum and CSG wells drilled, to 30 June 2016
Figure 2: Time–space plot showing the relationship between the basins shown in Figure 1
Millionyears NW SE
200
400
600
Carpentaria Basin Laura Basin MaryboroughBasin
Eromanga Basin
Cooper Basin Galilee Basin
Surat Basin
Ipswich Basin
Bowen Basin
CSGGas
Oil
Coal
Drummond BasinAdavale BasinWarrabin Trough
Georgina Basin
Clarence-Moreton Basin
15B
\EG
\Pet
Gas
\Bas
ins
Queensland’s petroleum and coal seam gas (January 2017)www.dnrm.qld.gov.au
3
")
")
")
")
")
")
")
")
")
")
")")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
") ")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
")
BRISBANE
Yeppoon
Nebo
Springsure
Marlborough
Woorabinda
Thangool
MountMorgan
Gayndah
Kingaroy
Esk
Kilcoy
Nanango
Maleny
Cooroy
Gin Gin
Mundubbera
Murgon
Wondai
Pittsworth
Oakey
CrowsNest
Laidley RosewoodBeenleigh
Miles
Taroom
MountLarcom
Eidsvold
MiriamVale
Calliope
St Lawrence
Middlemount
Capella
Biloela
Monto
Caloundra
Maroochydore
Childers
Millmerran
Gatton
Mitchell
Surat
Injune
Condamine
Theodore
Moura
Tara
Duaringa
Chinchilla
MACKAY
EMERALDROCKHAMPTON
NAMBOUR
BUNDABERG
TOOWOOMBAIPSWICH
ROMA
Glenden
Dione, Pandora, Pegasus North, Pegasus, Titan, Phoebe
Glenora
Glenora/Maisey
PORTSMOUTH, CAMERON
Rhea, Tethys, Mimas, Janus
Wandoan
DAWSON VALLEYDAWSON RIVER
MOURANIPAN
Arcadia
ATP 631
Roma OA
FAIRVIEW/Springwater
SCOTIA
Gilbert Gully
Membrance
PEAT
SPRING GULLY/Durham RanchSpring Gully
MUNGI
Harcourt
Lilyvale
Timmy
Blackwater
Vermont
Bowenville
Carborough
Meenawarra
Millmerran
MORANBAH GAS PROJECT
Don Juan
153°152°151°150°149°148°
22°
23°
24°
25°
26°
27°
28°
")
")
MT ISA
CAIRNS
±
Locality
Inset
LNG Plants:APLNGQCLNGGLNG
See Inset
Prepared by Spatial Graphic Services, Geological Survey of Queensland December 2016© The State of Queensland (Department of Natural Resources and Mines) 2016
http://creativecommons.org/licenses/by/3.0/au/deed.en
14B
\EG
\CS
GW
ellL
ocat
ion2
014.
mxd
") Town Projects Gas pipeline
Status
Other
Proposed
Surat Rail Proposed
! Surat Basin CSG area! Bowen Basin CSG area
Operating
Surat Basin
Bowen Basin
Polaris Under development
Arrow Energy
Other
RailRoad
0 4020
Kilometres
SantosQld Gas CompanyOrigin–Conoco–Phillips
PEAT Operating
Figure 4: CSG well location
4 Queensland’s petroleum and coal seam gas (January 2017)www.dnrm.qld.gov.au
!!
!!
!!
!!
!! !!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!!!
!!
!!
!!
!!
!!
")
")
")
")
")
")
Oakey
Miles
Condamine
Tara
Chinchilla
Wandoan
ATP 621
ARGYLE
BELLEVUEBERWYNDALE, BERWYNDALE SOUTH
BROADWATER, GLENDOWER, HARRY
ATP 852
CLUNIE-BARNEY
CODIE, LAUREN, KENYA, KATE
Cougals, Barney, Clunie
Jammat
JEN, RUBYJO, ISABELLA
JORDAN, CELESTE
KENYA EAST, JAMMAT, MARGARET
Michelle, Poppy, Sean
MATILDA JOHN, LAUREN
Paradise Downs, Carla, Lawton, Alex
Peebs, Marcus, Pinelands
SEAN/DAVID/POPPY
Combabula/Combabula North
CONDABRI/CONDABRI NORTH/Condabri South
Dalwogen
Ironbark
Kainama
Kainama North
Orana
Orana North
RamyardReedy Creek
TALINGA
Woleebee Burunga Lane
Castledean
DAANDINE
Dalby South
Dundee Hopelands
Kedron
KOGAN NORTH/East
Long SwampPlainview
Punchbowl / Baking Board
Stratheden
TIPTON WEST
151°150°
27° 0 25
Kilometres±
Inset
14B
\EG
\CS
GW
ellL
ocat
ionB
roch
ure.
mxd
") TownProjects
Status
Proposed
Rail! Surat Basin CSG area
OperatingPolaris Under development
Prepared by Spatial Graphic Services, Geological Survey of Queensland December 2016© The State of Queensland (Department of Natural Resources and Mines) 2016
http://creativecommons.org/licenses/by/3.0/au/deed.en
Bowen Basin
Gas pipeline
Surat Basin
Road
Other
Arrow Energy
Santos
Origin–Conoco–PhillipsQld Gas Company
PEAT Operating
Figure 5: CSG well location 2016 (inset from Figure 4)
Surat BasinThe Surat Basin became the focus for emerging CSG companies from the early 2000s onwards, when it became clear that an analogue existed with the lower-ranked coals in the Powder River Basin in the United States of America, which were producing commercial quantities of gas.
The success of the QGC Argyle 1 well in 2000 demonstrated that the Surat Basin could become a significant CSG producer.
Commercial production of CSG from the Jurassic Walloon Coal Measures of the Surat Basin began in January 2006 from the Kogan North CSG area west of Dalby. This was followed in May 2006 by production from the Berwyndale South CSG area, southwest of Chinchilla. CSG is also currently produced from several areas between Dalby and Chinchilla.
Surat Basin CSG was first used to supply the Swanbank E gas-fired power station near Ipswich in southeast Queensland.
Commercially produced CSG from the Walloon Coal Measures is typically obtained from seams between 200 and 600 m. The term Walloon Coal Measures is used for the combined thicknesses of the Taroom Coal Measures (lower), Tangalooma Sandstone and Juandah Coal Measures (upper).
Coals in the Surat Basin were not as deeply buried as those in the Bowen Basin and therefore are less thermally mature, with generally lower gas contents. Vitrinite reflectance values for coals in the Walloon Coal Measures in Queensland range from 0.35% to 0.6% Rv. Seams in the Walloon Coal Measures are generally not as thick or laterally continuous as those in the Bowen Basin, but typically have a higher permeability. This has allowed the Surat Basin CSG to be commercialised using a range of well-completion techniques. The Surat Basin is now the major source of CSG in Queensland.
Certified proved and probable reserves in the Surat Basin have increased significantly since 2006. By 2008 more certified 2P CSG reserves had been reported for the Surat Basin than the Bowen Basin. From 2011–12 on, CSG production from the Surat Basin has been higher than that from the Bowen Basin. In 2015–16, production from the Surat Basin was more than four times that of the Bowen Basin.
Other basinsOther basins have attracted CSG exploration interest including the Galilee Basin, Clarence–Moreton Basin, Styx Basin, Cooper Basin, Eromanga Basin, Ipswich Basin, Laura Basin, Maryborough Basin and Tertiary basins (Duaringa, Herbert Creek, Hillsborough, Yaamba basins and the Nagoorin Graben).
Production and reserves 2015–16Coal seam gasCSG is currently only produced from the Bowen and Surat basins (Table 1, Figure 6). Production for 2015–16 was 26 145.35 million cubic metres (Mm3) (923.3 billion cubic feet (bcf), 979.1 petajoules (PJ)) and is comprised of 4957.94 Mm3 (175.1 bcf, 185.7 PJ) from the Bowen Basin and 21 187.41 Mm3 (748.2 bcf, 793.4 PJ) from the Surat Basin. The proportion of CSG production from the Surat Basin has increased relative to the Bowen Basin. (Figures 6 & 8).
Cumulative CSG production to June 2016 was approximately 86 841 Mm3, (3067 bcf, 3252 PJ) with about 60% of production coming from the Surat Basin. As at 30 June 2016, the remaining 2P CSG reserves were 1 100 829 Mm3 (38 874 bcf, 41 229 PJ) (Figure 7).
During the six months ending on 30 June 2016, 5127 wells were reported as producing CSG. In 2015–16, approximately 60 498.95 megalitres (ML) of associated water was produced as part of the state’s CSG production.
Queensland’s petroleum and coal seam gas (January 2017)www.dnrm.qld.gov.au
5
Table 1: Queensland petroleum — production summary 2015–16
Gas Mm3 (PJ) Coal seam gas Mm3 (PJ) Oil (ML) Condensate (ML) LPG (ML)
Production 2015–16
Adavale (conventional) – – – – –
Bowen–Surat (conventional) 27.89 (1.0) – 4.0118 3.0768 1.7928
Cooper–Eromanga (conventional) 1096.91 (41.1) – 441.0021 63.1100 90.8404
Denison (conventional) 64.88 (2.4) – – 0.6211 –
Bowen Basin (coal seam gas) – 4957.94 (185.7) – – –
Surat Basin (coal seam gas) – 21 187.41 (793.4) – – –
TOTAL PRODUCTION 1189.68 (44.5) 26 145.35 (979.1) 445.0139 66.8079 92.6332
Note: Tenure holders are required to report to the department their gas production and reserve figures in millions of cubic metres (Mm3) and other petroleum products in megalitres (ML) One Petajoule (PJ) is the equivalent to 26.7 Mm3
Table 2: Queensland petroleum — 2P reserves as at 30 June 2016
Gas Mm3 (PJ) Coal seam gas Mm3(PJ) Oil (ML) Condensate (ML) LPG (ML)
2P reserves as at 30 June 2016
Adavale (conventional) 575.07 (21.5) – – – –
Bowen–Surat (conventional) 4600.65 (172.3) – 1038.36 263.02 273.90
Cooper–Eromanga (conventional) 4714.53 (176.6) – 2417.21 328.32 277.12
Denison (conventional) – – – – –
Bowen Basin (coal seam gas) – 267 523.01 (10 019) – – –
Surat Basin (coal seam gas) – 833 306.62 (31 210) – – –
TOTAL PETROLEUM 2P RESERVES 9890.25 (370.4) 1 100 829.63 (41 229) 3455.57 591.34 551.02
Note: Tenure holders are required to report to the department their gas production and reserve figures in millions of cubic metres (Mm3) and other petroleum products in megalitres (ML) One Petajoule (PJ) is the equivalent to 26.7 Mm3
Liquefied petroleum gas Liquefied petroleum gas (LPG) is sourced from the Cooper and Eromanga basins and historically from the Bowen and Surat basins. Total production for 2015–16 was 92.63 ML (49 265 tonnes (t)). Production from the Cooper and Eromanga basins was 90.84 ML (48 312 t) and production from the Bowen and Surat basins was 1.79 ML (953 t) (see Table 1). As at 30 June 2016, the remaining 2P LPG reserves were 551.02 ML (293 051 t) (Table 2). Cumulative LPG production to June 2016 was about 4800 ML (2.55 million tonnes (Mt)), with over half coming from the Cooper and Eromanga basins.
Oil Total Queensland oil production for 2015–16 was 445.0139 ML (2.8 million barrels (Mbbl)); 441.00 ML (2.80 Mbbl) was produced from the Cooper and Eromanga basins, and 4.01 ML (25 236 barrels (bbl)) from the Bowen and Surat basins (Table 1). Cumulative oil production to June 2016 was about 29 451 ML (185 Mbbl). As at 30 June 2016, the remaining proved and probable oil reserves were 3455.57 ML (21.74 Mbbl) (Table 2).
CondensateCondensate is produced from the same basins as oil and gas, with minor production from the Denison Trough in the Bowen Basin. Production for 2015–16 was 66.81 ML (420 252 bbl) and is comprised of 63.11 ML (396 991 bbl) from the Cooper and Eromanga basins, 3.08 ML (19 354 bbl) from the Bowen and Surat basins and 0.62 ML (3907 bbl) from the Denison Trough (Table 1). Cumulative condensate
production to 2015–16 was about 5451 ML (34 million barrels (Mbbl)). As at 30 June 2016, the remaining proved and probable reserves were about 591 ML (3.7 Mbbl) (Table 2).
Conventional gasConventional gas has been produced from the Cooper and Eromanga basins, Bowen and Surat basins, Adavale Basin and the Denison Trough in the Bowen Basin. Production for 2015–16 was 1189.68 Mm3 (42.0 bcf, 44.5 PJ), and comprised 1096.91 Mm3
(38.7 bcf, 41.1 PJ) from the Cooper and Eromanga basins, 27.89 Mm3 (1.0 bcf, 1.0 PJ) from the Bowen and Surat basins and 64.88 Mm3 (2.3 bcf, 2.4 PJ) from the Denison Trough (Table 1, Figure 8).
Cumulative conventional gas production from 1964 to June 2016 has been about 77 781 Mm3 (2747 bcf, 2913 PJ). As at 30 June 2016, the remaining proved and probable conventional gas reserves were 9890.25 Mm3 (349.3 bcf, 370.4 PJ) (Table 2).
Total gas productionTotal gas production (conventional gas + CSG, excluding LPG) for 2015–16 was 27 335.03 Mm3 (965.29 bcf, 1023.78 PJ) with over 95% attributed to CSG.
Total gas reservesTotal remaining proved and probable gas reserves (conventional gas + CSG, excluding LPG) as at 30 June 2016 were 1 110 719.88 Mm3
(39 223 bcf, 41 599 PJ) with over 99% being CSG.
6 Queensland’s petroleum and coal seam gas (January 2017)www.dnrm.qld.gov.au
10 000
20 000
30 000
40 000
31-12-04 31-12-05 31-12-06 31-12-07 31-12-08 31-12-09 31-12-10 31-12-11 31-12-12 31-12-13 31-12-14 31-12-15Date
600 000
400 000
800 000
1 000 000
65048451 8329 8648
266433743278
21 530
722741374
28 03423 394
24 72526 587
31 84533 054
35 236
8591 8570 8620 9083 9225 9522 939110 030 10 019
27 464 28 51328 613
32 087 32 795
36 055 37 233
41 170 42 02033 33842 860
33 34242 733
33 56743 597
31 21041 229
37 083
23 103
18 289
15 714
10 783
71545989
45593667338641163652 606956735524
42273863364032902820
17 034
12 617
10 190
6556
32912349
1269847
Pet
ajou
les
(PJ)
Mill
ion
cubi
c m
etre
s (M
m3 )
16B
\PG
\Gra
phs\
CS
G_r
es
Surat Basin
Bowen Basin
Total (PJ)
Figure 7: Queensland coal seam gas 2P reserves
100
200
300
400
500
600
700
800
900
1000
Year
2000
6000
4000
8000
98-9997-98 99-00 00-01 01-02 02-03 03-04 04-05 05-06 06-07 07-08 08-09 09-10 10-11 11-12 12-13 13-14 14-15 15-16
10 000
12 000
16 000
14 000
18 000
20 000
22 000
24 000
26 000
Pet
ajou
les
(PJ)
Mill
ion
cubi
c m
etre
s (M
m3 )
212
151125
866336
30271610642
93
119
234 254113 139
121 115
264 285150 166
457353
979793
114 119 104
186
105876961
36
4638
1720.3
16B
\PG
\Gra
phs\
CS
G_p
rod
Surat Basin
Bowen Basin
Total (PJ)
Figure 6: Queensland coal seam gas production
100
200
300
400
500
Pet
ajou
les
(PJ)
Year
2000
Mill
ion
cubi
c m
etre
s (M
m3 )
6000
4000
8000
10 000
12 000
14 000
600
700
800
900
1000
16 000
20 000
18 000
22 000
24 000
26 000
6664 68 70 72 74 76 78 80
83–8
4
85–8
6
87–8
8
89–9
0
91–9
2
93–9
4
95–9
6
97–9
8
99–0
0
01–0
2
03–0
4
05–0
6
07–0
8
09–1
0
11–1
2
13–1
4
15–1
6Total Gas (2015–16) – 26 145.35 Mm3
Surat Basin (coal seam gas) – 21 187.41 Mm3
Bowen Basin (coal seam gas) – 4957.94 Mm3
Denison Trough (conventional gas) – 64.88 Mm3
Bowen–Surat basins (conventional gas) – 27.89 Mm3
Cooper–Eromanga basins (conventional gas) – 1096.91 Mm3
16B\
PG\G
raph
s\C
onv&
CSG
_pro
d
Figure 8: Queensland conventional gas and CSG annual production by basin to 30 June 2016
Queensland’s petroleum and coal seam gas (January 2017)www.dnrm.qld.gov.au
7
50
100
150
Dis
cove
ry N
umbe
r
Number of exploration wells100 200 300 400 500 600 700
Gas discoveries
Oil discoveries
15A
\EG
\Gra
phs\
Coo
per_
Ero
_wel
ls
Figure 9: Drilling exploration success rates — Bowen–Surat basins
100
50
200
250
150
Dis
cove
ry N
umbe
r
Number of exploration wells100 200 300 400 500 600
Gas discoveries
Oil discoveries
Tight gas discoveries
15A
\EG
\Gra
phs\
Coo
per_
Ero
_wel
ls
Figure 10: Drilling exploration success rates — Cooper–Eromanga basins
Drilling exploration success rates
The petroleum (excluding CSG) exploration success rates in
Queensland’s petroleum-producing basins are generally very good
with approximately 20% of wells drilled in the Bowen/Surat basins
and 40% of wells drilled in the Cooper/Eromanga basins reported
as discoveries by exploration companies. (see Figures 9 & 10).
This history of drilling in the Bowen and Surat basins provides
insight into key factors driving exploration. Exploration in the mid
to late 1960s and 1970s followed on from the discoveries made
in the early 1960s. The success rate increased slightly in the early
1980s through until the mid-1990s, as the result of the application
of new technology, especially the digital recording of seismic data.
The improvement in the latter part of the exploration history in
these basins is due to the use of new drilling technology.
The exploration history of the Cooper and Eromanga basins differs
from the other basins in that the overall success rate remains
relatively consistent.
Further information:
Geoscience Manager, Petroleum and Gas Geological Survey of Queensland Department of Natural Resources and Mines PO Box 15216, City East, Queensland 4002 Email: [email protected] Phone: 13 QGOV (13 74 68) within Australia
Download our free Resources Queensland app for smartphone and tablet to access a wide range of information about investing in Queensland’s mining and petroleum sectors; follow the links from our website. www.dnrm.qld.gov.au www.business.qld.gov.au/mining
Note: Statistics quoted in this brochure were compiled by the Department of Natural Resources and Mines, 2015–16.
CC15
-GS
Q10
4
8 Queensland’s petroleum and coal seam gas (January 2017)www.dnrm.qld.gov.au