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COOPER–EROMANGA BASINS SOUTH AUSTRALIA Petroleum Exploration Data Package 3

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COOPER–EROMANGA BASINS SOUTH AUSTRALIA Petroleum Exploration Data Package 3 COOPER–EROMANGA BASINS SOUTH AUSTRALIA Petroleum Exploration Data Package 3 EXPLORATION OPPORTUNITIES BLOCKS CO2000A–H January 2000 Acreage release Acreage release Government of South Australia COOPER BASIN EXPLORATION OPPORTUNITY – THIRD ROUND BLOCKS CO2000-A to H Compiled by Tony Hill Petroleum Group JANUARY 2000 Petroleum Exploration Data Package 3 © Department of Primary Industries and Resources South Australia, 2000 This report is subject to copyright. Apart from fair dealing for the purposes of study, research, criticism or review as permitted under the Copyright Act, no part may be reproduced without written permission of the Chief Executive Primary Industries and Resources South Australia. CONTENTS EXECUTIVE SUMMARY ..............................................4 EXPLORATION HISTORY ..............................................6 COOPER BASIN ACREAGE RELEASE STRATEGY ...............................6 GEOLOGICAL SUMMARY Eromanga Basin .................................................7 Cooper Basin ...................................................9 Warburton Basin .................................................9 PETROLEUM GEOLOGY Reservoirs ....................................................11 Source rocks...................................................14 Seals and plays .................................................14 UNDISCOVERED POTENTIAL Introduction ...................................................16 Cooper Basin gas ................................................16 Cooper-Eromanga Basin oil...........................................16 Results......................................................16 INFRASTRUCTURE AND MARKETS Production facilities ...............................................16 Other facilities in the Cooper Basin.......................................18 Oil and gas markets ...............................................18 REGULATORY REGIME Review of Petroleum Act ............................................18 EXPLORATION ACCESS Access to land ..................................................19 National Parks and Reserves ..........................................19 Innamincka and Strzelecki Regional Reserves .................................19 European Heritage ...............................................19 Aboriginal Heritage ...............................................19 Commonwealth Native Title Act 1993 .....................................19 Environmental regulation ............................................21 APPENDICES 1. CO2000 block maps, seismic surveys, and selected well information .....................23 2. Data and order forms ..............................................41 3. Licence application form and procedures....................................47 FIGURES 1. Cooper Basin location map............................................5 2. Eromanga Basin stratigraphy...........................................7 3. Base Cretaceous, ‘C’ seismic horizon map ...................................8 4. Cooper Basin stratigraphy ............................................9 5. Top Permian, ‘P’ seismic horizon map .....................................10 6. Warburton Basin stratigraphy..........................................11 7. Top Warburton Basin unconformity, ‘Z’ seismic horizon map.........................12 8. Patchawarra Formation coal isopach map ...................................15 9. Base Patchawarra Formation maturity map...................................15 10. Hydrocarbon plays schematic..........................................16 11. Comparison of Australian and US gas prices ..................................18 12. Gas supply and demand, Eastern Australia (Australian Gas Association report)................18 13. Regional Reserves and environmental zones, Cooper Basin region ......................20 14. Native Title Claims, Cooper Basin region ...................................22 15. Seismic line and well locations; ‘C’ Horizon Block CO2000 – A .......................24 16. Seismic line and well locations, ‘C’ Horizon Block CO2000 – B .......................26 17. Seismic line and well locations, ‘P’ Horizon Block CO2000 – C .......................28 18. Seismic line and well locations, ‘C’ Horizon Block CO2000 – D .......................30 19. Seismic line and well locations, ‘C’ Horizon Block CO2000 – E .......................32 20. Seismic line and well locations, ‘C’ Horizon Block CO2000 – F .......................34 21. Seismic line and well locations, ‘P’ Horizon Block CO2000 – G .......................36 22. Seismic line and well locations, ‘P’ Horizon Block CO2000 – H .......................38 TABLES 1. Third round acreage release blocks, and open file data summary Cooper Basin, 2000 .............4 2. Cooper Basin acreage releases, 1998 – 2000...................................7 3. Cumulative production to 31/7/99 for selected fields adjacent to CO2000 blocks. ..............13 4. SA Cooper Basin reserve summary, 1/1/99 (source Santos Ltd).........................16 5. Undiscovered recoverable Cooper Basin gas potential, billion cubic metres (tcf) ...............17 6. Undiscovered recoverable Cooper Basin oil potential, million cubic metres (mmstb). ............17 7. Cooper Basin pipeline licences, February 1999 ................................17 8. PEPS-SA® modules and contents ........................................41 COOPER BASIN EXPLORATION OPPORTUNITY THIRD ROUND BLOCKS CO2000-A to H Compiled by A.J. Hill (PIRSA) with contributions from J.G.G. Morton * - undiscovered potential, C. Boreham (AGSO) – source rocks, E.M. Alexander * and D.I. Gravestock * – seals and traps, B. O’Neil – history, Alan Sansome * and Dragan Ivic * – data. PIRSA staff indicated by *. Executive Summary The South Australian part of the Cooper Basin had been under licence continuously since 1954, however on 27 February 1999 Petroleum Exploration Licences (PELs) 5&6 expired. The former PEL 5&6 area is being released in four bidding rounds over 1998–2000, with a planned total of 27 blocks on offer for the first three rounds. The first round commenced in October 1998 when eleven blocks flanking the Cooper Basin (CO98-A to K) were released. Applications for those blocks closed on 11 March 1999 and a total of 41 bids were received from 15 consortia. This keen bidding resulted in 11 exploration licences being offered to 6 consortia who will invest a total of $45 million during the next 5 years. The second round of eight core Cooper Basin blocks (CO99-A to H) in the Patchawarra Trough was released in April 1999 (Fig. 1). Applications for these blocks closed on 25 November 1999 and a total of 47 bids were received from 16 consortia. This has resulted in 8 exploration licences being offered to 7 consortia who will invest a total of $120 million during the next 5 years. The current release of eight Cooper Basin blocks (CO2000-A to H) comprising four outer blocks in the Patchawarra Trough, one outer block to the west of the Wooloo Trough and three inner blocks adjacent to producing oil and gas fields, forms the third round acreage release (Fig. 1). The total area on offer is approximately 12 735 km2 or 3 147 000 acres (Table 1). A six month evaluation period applies for blocks CO2000-A to E blocks with applications closing at 4.00 pm on Thursday 29 June 2000 whilst a nine month evaluation period applies for blocks CO2000-F to H with applications closing at 4.00 pm on Thursday 28 September 2000. Table 1. Third round acreage release blocks, and open file data summary Cooper Basin, 2000. Block Block area Year last drilled No. wells 2D seismic 3D seismic km2 acres km km2 CO2000-A 2051 506 811 – 375.5 CO2000-B 1508 372 633 – 116.7 CO2000-C 1452 358 796 1997 2 1198.6 CO2000-D 1185 292 819 1991 3 1775.4 CO2000-E 3314 818 904 – 487.9 CO2000-F 1163 287 382 1999 16 3137.0 39 CO2000-G 956 236 232 1997 18 2802.3 7 CO2000-H 1106 273 297 1998 24 3671.1 Applications may be made for any or all of the eight areas, CO2000-A to H. Licences are offered on the basis of the most competitive work program. In the event that more than one area is offered to an applicant for licence, there is no obligation for the applicant to accept any or all of the offers. It should be noted that there are no criteria limiting the number of PELs which may be offered to one applicant (although in considering Competition Policy Principles it would require major work program benefits to offer more than two PELs to the one applicant in the third round of bidding). In addition, applications for this third release of acreage will in no way prejudice successful applications in the final Cooper Basin acreage release. Areas constituting unsuccessful Petroleum Production Licence Applications made by the operators of former PELs 5&6 will not be included in the surrounding CO98, CO99 or CO2000 blocks. Subject to resolution of PPLA issues, if any such areas become available, they would be included in a final bidding round, post September 2000. A decision on blocks to be released in the Coongie Lakes area will not be made until after a consultative process has been completed on issues relating to access to this environmentally important area. Comments, enquiries and applications for Petroleum Exploration Licences may be addressed to: Director, Petroleum Group Level 7 Telephone: IAC 61 8 8463 3204 101 Grenfell St Facsimile: IAC 61 8 8463 3229 Adelaide SA 5000 Website: www.petroleum.pir.sa.gov.au AUSTRALIA General enquiries: Email: [email protected] Applications should be accompanied by a proposed five year work program,
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