1. Technical Overview - JPDA
Nick Kyranis
Managing Director –Technical
Timor Sea Designated Authority

2. Contents
• Historic & Future Technical Activity
• Synopsis – Exploration & Development
• Summary of Exploration Activities
• Summary of Development Activities
• JPDA 06-101, 06-102, 06-103, 06-104
• JPDA Data Availability

3. Historic & Future Technical
Activity
• Prior to 1991 Seismic reconnaissance and one
well drilled
• Under previous Treaty arrangements 1991-
2003
– 50,000+/- kms of 2D and 3500 sq-kms of 3D
– 46 wells drilled JPDA wells
& fields
• 9 significant discoveries, three oilfields had produced
28 MMBO, and development of a major gas recycling
project was well advanced
• 28 recorded gas and/or oil shows
• 9 dry holes

4. Historic & Future Technical
Activity
• Following entry into force of the TST in April 2003
– Drilled one exploration well
– Acquired 500 km of 2D Seismic data
– Bayu-Undan Project “Development Drilling”
completed
– Bayu-Undan Project facilities commissioned and
production commenced
– From April 2003 to mid-August 2005, 38+/- million
barrels of liquids produced and sold from all fields
– Bayu-Undan to Darwin LNG pipeline
commissioned
– Construction of Darwin LNG plant commenced
(near completion)

5. Historic & Future Technical
Activity
• The Road Ahead?
– PMC and PSC documents now in place allowing more
operational certainty.
– The TSDA has been able to release acreage that has
been fallow for several years.
– Development of past discoveries more likely to
progress
– Additional infrastructure and buoyant markets will lead
to more seismic and drilling activity to take advantage of
synergetic opportunities.

6. Contents
• Historic & Future Technical Activity
• Synopsis – Exploration & Development
• Summary of Exploration Activities
• Summary of Development Activities
• JPDA 06-101, 06-102, 06-103, 06-104
• JPDA Data Availability

7. Synopsis, Exploration &
Development
• JPDA – Located over Northern Bonaparte
Basin, and water depths from 60-1000 m.
• Sedimentary sequence comprises thick
Mesozoic & Tertiary sediments underlain
by Permian & older formations.
• Mesozoic & Tertiary deposition and
distribution of source & reservoir rocks
were influenced by : Locality
Map
• Subsidence and tectonism
• Pre-existing (Palaeozoic) structural grain.

8. Synopsis, Exploration &
Development
• Present subsurface structural
configuration in the JPDA resulted from
intersection of several rift cycles.
• Structural trends generally strike NE-SW
and less frequently NW-SE and E-W
• Later faulting and some rejuvenation of
Jurassic faults are evident.
Structural

9. Synopsis, Exploration &
Development
• Most accumulations lie in Jurassic-Cretaceous
Plover to Flamingo clastics. Stratigraphy
• HC’s mostly generated and trapped in
dominantly estuarine/deltaic sequences.
• Most common traps are fault dependent. Fault
seal integrity is vital.
• Oil and/or gas shows encountered in about 80%
of all wells drilled.
• Tertiary fault reactivation is the common cause
of hydrocarbons escaping/migrating elsewhere.

10. Synopsis, Exploration &
Development
TS Wells
• Over twenty commercial discoveries & Fields
in Northern Bonaparte Basin.
• In JPDA, production from 4 out of 9 JPDA PSC’s
discoveries
• Elang, Kakatua & Kakatua North
Oilfields commenced production in EKKN
1998
– 30 MMBO produced to date
– Now in late decline

11. Synopsis, Exploration &
Development
• Bayu-Undan Gas/Condensate Field
• Commenced production in 2004.
• Reserves of 3.4 Tcf and 400MMB of
liquids
• Currently producing up to 110,000 BLPD
and reinjecting lean gas.
• Export from Darwin LNG plant is expected
to commence in April 2006.
Bayu Undan

12. Synopsis, Exploration &
Development
• Development of Jahal and Kuda-Tasi Oil Fields
(reserves est. 20 MMBO) is under review.
• Greater Sunrise Gas Fields are awaiting development
(reserves est. 7.7 Tcf gas and 300 MMB liquids).
• Significant gas encountered at Chuditch (0.7 Tcf). Also
Fohn and Kelp Deep (reserves indeterminate)
• Adjacent and west of the JPDA, the Laminaria &
Corallina Oilfields commenced development in 1999.
Original reserves 200+ MMBO Recoverable
Production peaked at 150,000 + BOPD
TS Wells
& Fields

13. Contents
• History of E & D in the JPDA area
• Synopsis of Petroleum Geology
• Summary of Exploration Activities
• Summary of Development Activities
• JPDA 06-101, 06-102, 06-103, 06-104
• JPDA Data Availability

14. Summary of Exploration Activities
• 50,000+ kms of 2D Seismic
• 3,500+ sq-kms of 3D Seismic
• Other surveys (Aeromagnetic, ALF,
Gravity)
• 46 wells drilled,
– 37 wells recorded HC’s, of which 9 are
commercially significant.

15. Contents
• History of E & D in the JPDA area
• Synopsis of Petroleum Geology
• Summary of Exploration Activities
• Summary of Development Activities
• JPDA 06-101, 06-102, 06-103, 06-104
• JPDA Data Availability

16. Summary of Development Activities
• EKKN – producing through leased FPSO
• Bayu-Undan – currently producing condensate +
LPG via gas recycling project
• BU-DLNG pipeline commissioned and gas
introduced.
• BU-DLNG facility export program to commence April
2006
• Jahal/Kuda Tasi – proposal for development under
review
• Sunrise/Troubadour – Inter-Governmental equity
discussions at advanced stage

17. Contents
• History of E & D in the JPDA area
• Synopsis of Petroleum Geology
• Summary of Exploration Activities
• Summary of Development Activities
• JPDA 06-101, 06-102, 06-103, 06-104
• JPDA Data Availability

18. JPDA PSC’s Current & Advertised

19. JPDA 06-101 (3956 km2)
• Contains Chuditch gas
discovery, est. 0.7 Tcf gas
• Only three wells drilled in Chuditch-1
this area
JPDA 06-101
• Proven and potential
Mesozoic and Permian
plays.
• Untested structures likely
to exist Walleroo-1
• Semi-detailed 2D seismic
coverage across entire Nabarlek-1
area
• Water depths are generally
less than 100 metres.

20. JPDA 06-102 (4215 km2)
• Adjacent to Bayu-Undan
producing field. Naga-1
Coleraine-1
• Proven Mesozoic oil and
gas province Minotaur-1
• Significant HC shows in 4
wells drilled
• Good 2D seismic Fohn-1
coverage
• Depth to primary target JPDA 06-102
zone < 3,500m.
• Water depths less than
120 metres

21. JPDA 06-103 (3741 km2)
• Proven petroleum
province.
• Plays include Permian to
Jurassic fault blocks, JPDA 06-103
drape and stratigraphic
traps
Thornton-1
• 2D seismic coverage
across entire area Barnacle-1
• Adjacent to the Jahal and
Kuda Tasi oil field
discoveries
• Untested structures exist
with targets < 3500m.
• Water depths generally
130 metres or deeper

22. JPDA 06-104 (5777 km2)
• Adjacent to the Greater Sunrise
Gas Field
• Only three wells drilled in this area
• Significant hydrocarbon shows
encountered JPDA 06-104
• Semi-detailed 2D seismic coverage Jura-1
across entire area includes recent
reconnaissance 2D
• Existence of untested structures
• The Aptian Unconformity is easily Kelp-1
mapped, and is underlain by Kelp Deep-1
Jurassic Flamingo and Plover
targets
• Depth to targets range from 2,050 –
5,000 m.
• Water depths up to 1,000 m.

23. Contents
• History of E & D in the JPDA area
• Synopsis of Petroleum Geology
• Summary of Exploration Activities
• Summary of Development Activities
• JPDA 06-101, 06-102, 06-103, 06-104
• JPDA Data Availability

24. Data Availability
• Geoscience Australia
• Oil, Gas & Energy Directorate, TL
• Fugro Multi Client Services Pty Ltd
• Australian Seismic Brokers Pty Ltd
• IHS Energy
• Exploration Data Services Pty Ltd