AIEN SEMINAR

Legal and Contractual Aspects of Natural Gas Projects

Chuditch: History of a Timorese Gas Field (in the context of the Maritime Boundary)

Before Sunrise, Jaco Island

Andy Butler

Dili, 19 April 2024

Timor-Leste Offshore: All Stages of the Gas Cycle

Bayu Undan (Santos):

Gas fields, key players and infrastructure

Late in field life; undergoing FEED for CCS conversion

Greater Sunrise (Woodside):

Ongoing negotiations between JV / governments

Chuditch (Baron/SundaGas):

Now Timor-Leste 2nd largest field, appraisal planned

Exploration:

Eni signed PSC for Block P, plan 3D and drilling

1, 3

24

1

Approximations based on latest publicly available information

2

Estimated remaining

2

3

Includes gas equivalents of condensate liquids

4

Discovery + prospects based on 2D mapping

Chuditch Area: Earlier Licence History

ZOCA 91-08 - Sagasco / Petroz (1991 - 1997)

Sikatan-1

Sikatan-1, 1994, Dry hole

ZOCA 91-08

ZOCA 91-09 - Enterprise (1991 - 2001)

Sagasco

Farm-in 1996, Shell (operator) and Mitsubishi

ZOCA

Chuditch-1, 1998, Gas Discovery

(1989 - 2002)

Chuditch-1

ZOCA 91-14 - Enterprise / Nippon (1991 - 1997)

ZOCA 91-09

Nabarlek-1, 1994, Dry hole

Wallaroo-1, 1996, Dry hole

Enterprise (then Shell)

Wallaroo-1

Australia

Nabarlek-1

ZOCA 91-14

Enterprise

3

Chuditch Area: Earlier Licence History

ZOCA 91-08 - Sagasco / Petroz (1991 - 1997)

Sikatan-1

Sikatan-1, 1994, Dry hole

ZOCA 91-09 - Enterprise (1991 - 2001)

Farm-in 1996, Shell (operator) and Mitsubishi

JPDA

Chuditch-1, 1998, Gas Discovery

(2002 - 2019)

JPDA 06-101(A)

Chuditch-1

ZOCA 91-14 - Enterprise / Nippon (1991 - 1997)

Nabarlek-1, 1994, Dry hole

Minza Oil & Gas

Wallaroo-1, 1996, Dry hole

JPDA 06-101(A) - Minza Oil & Gas (2006 - 2013)

3D seismic acquired 2012

Wallaroo-1

Australia

No wells drilled

Nabarlek-1

Exited in 2013

4

Chuditch Area: Earlier Licence History

ZOCA 91-08 - Sagasco / Petroz (1991 - 1997)

Sikatan-1

Sikatan-1, 1994, Dry hole

TL-SO-19-16 PSC

ZOCA 91-09 - Enterprise (1991 - 2001)

SundaGas

Farm-in 1996, Shell (operator) and Mitsubishi

Timor-Leste

Chuditch-1, 1998, Gas Discovery

(2019 onwards)

Chuditch-1

ZOCA 91-14 - Enterprise / Nippon (1991 - 1997)

Nabarlek-1, 1994, Dry hole

Wallaroo-1, 1996, Dry hole

JPDA 06-101(A) - Minza Oil & Gas (2006 - 2013)

3D seismic acquired 2012

Wallaroo-1

Australia

No wells drilled

Nabarlek-1

Exited in 2013

JPDA 06-101(A) - SundaGas (2019 onwards)

5

History of SundaGas and Chuditch to date

Maritime Boundaries agreement period

Covid-19 pandemic

UNCLOS

Conciliation

Agreement

Treaty

Treaty

No trips possible

ratification

to Timor-Leste

compulsory

Begins

reached

signed

conciliation

requested

Covid-19 cases

2016

2017

2018

2019

2020

2021

2022

2023

Today

2024

SundaGas

JPDA PSC

1st Timor-Leste

2nd TL PSC

Chuditch

Commence 3D

Dili

Complete CPR

Drilling

Site

Drill

activities

application

PSC application,

application

PSC award

seismic work

office

3D repro

Mgr hired

Survey

Chuditch-2

company registered

Other Timor-Leste

2

nd Licence Round

Carnarvon

2nd Licence Round

2nd Licence Round

offshore activities

Launch

drilling

Awards

Offshore PSC signed

(Eni)

6

Chuditch PSC: What has been achieved?

Chuditch Field

  • Estimated resources of c.700 Bcf

Dec 2017

Today

Discovered Resources

Chuditch:

Pmean = 1,165 Bcf

Prospective Resources

Chuditch NE:

Pmean = 863 Bcf

Chuditch SW:

Pmean = 855 Bcf

Quokka:

Pmean = 410 Bcf

Maritime boundaries prior to 2019

7

Chuditch-2 Appraisal Well: Plan and Status

Plan to drill in Q4 2024

Appraisal 5.1 km from discovery, in 68m water

149m gas column predicted (vs 30m at Chuditch-1) Simple vertical well, including DST

Drill team assembled; well planning progressing Site survey completed

All depths are metres below mean sea level

8

Chuditch NE Prospect 'captured' through Maritime Boundary change

Chuditch NE:

"the best undrilled

prospect in Timor-Leste"*

Chuditch

Field

* Andy Butler, April 2024

9

Example Chuditch Field Development Concept

Chuditch Engineering

Concept (illustrative)

Chuditch

NE

Chuditch

Chuditch SW

Principal

LNG flows

in Asia

Pacific

Domestic & relatively minor LNG flows not shown

10

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Disclaimer

Baron Oil plc published this content on 19 April 2024 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 19 April 2024 09:11:07 UTC.