GLOSSARY AND TERMS

ATP – Authority To Prospect granted under the Petroleum Act 1923 (Qld) or the Petroleum Gas (Production and Safety) Act 2004 (Qld)

Australia Pacific LNG PTY Limited (APLNG) – a JV between Origin 37.5%, ConocoPhillips 37.5% and Sinopec 25%. See more information from APLNG about APLNG: www.aplng.com.au

CSG – Coal Seam Gas is a form of natural gas that is trapped in coal seams. It is also known as Coal Bed Methane

Eromanga Basin – The Mesozoic sedimentary basin covering parts of Queensland, the Northern Territory, South Australia and New South Wales

Exploration – Drilling, seismic or technical studies to identify and evaluate regions or prospects with the potential to contain hydrocarbons

JV – Joint Venture

Gladstone LNG (GLNG) – Is a venture between Santos and three of the world’s largest energy companies, PETRONAS, Total and KOGAS to convert Coal Seam Gas (CSG) to Liquefied Natural Gas (LNG) for export to global markets. See the following link for more information from GLNG about the GLNG Project: Santos GLNG

LNG – Liquefied Natural Gas, which is natural gas that has been liquefied by refrigeration for storage or transportation

Methane – A colourless, odourless flammable gas that is the main component of natural gas

Non-operated – A joint interest that is not operated by Tri-Star

Oil – A mixture of liquid hydrocarbons of different molecular weights

Pedirka Basin – The Paleozoic intracratonic sedimentary basin located primarily in South Australia and the Northern Territory and possibly extending into Queensland

PEL – A petroleum exploration licence granted under the Petroleum and Geothermal Energy Act 2000 (SA)

PELA – An application for a PEL

Petroleum Act – The Petroleum Act 1923 (Qld), the Petroleum Gas (Production and Safety) Act 2004 (Qld) or the Petroleum and Geothermal Energy Act 2000 (SA) as relevant

PJ – Petajoule

PL – A petroleum lease granted under the Petroleum Act 1923 (Qld) or the Petroleum Gas (Production and Safety) Act 2004 (2004)

PL – Petroleum Lease

PPL – A Petroleum Production Licence granted under the Petroleum and Geothermal Energy Act 2000 (SA)

PRL – Petroleum Retention Licence granted under the Petroleum and Geothermal Energy Act 2000 (SA)

Production well – A well used to retrieve oil or gas from an underground reservoir

Surat Basin – The sedimentary geological basin of Jurassic to Cretaceous age in southern Queensland and northern New South Wales

Tenement – A permit, claim, licence or lease that may be granted by a Mining Registrar, the responsible Minister, or by the Governor in Council

Tenure – The right to use and occupy property either under ownership or lease in order to explore or produce oil or gas

Unconventionals – Natural hydrocarbons which occur in less permeable sources. These include coal seam gas extracted from coal deposits, shale gas extracted from shale, and tight gas, which is extracted from layers of low-permeability rock

WTI – West Texas Intermediate crude oil is a high gravity, low sulphur oil