$ – Australian dollars unless otherwise stated

1P – proved reserves in accordance with the SPE PRMS

2P – proved plus probable reserves in accordance with the SPE PRMS

3P – proved plus probable plus possible reserves in accordance with the SPE PRMS

2C – the best estimate scenario of contingent resources in accordance with the SPE PRMS

ASX – the Australian Securities Exchange operated by ASX Limited

ATP – authority to prospect granted under the Petroleum Act 1923 (Qld) or the Petroleum Gas (Production and Safety) Act 2004 (Qld)

Barrel/bbl – the standard unit of measurement for all oil and condensate production. One barrel = 159 litres or 35 imperial gallons

Beach – Beach Energy Limited

boe – barrels of oil equivalent, the volume of hydrocarbons expressed in terms of the volume of oil which would contain an equivalent volume of energy

bopd – barrels of oil per day

Contingent resources – those quantities of petroleum estimated to be potentially recoverable from known accumulations by application of development projects but which are not currently considered to be commercially recoverable due to one or more contingencies, as defined in the SPE PRMS

Cooper Basin – the sedimentary geological basin of upper Carboniferous to middle Triassic age in north east South Australia and south west Queensland

Cooper-Eromanga Basin – the Cooper Basin and the overlying Eromanga Basin within the limits of the Cooper Basin

CSG – coal seam gas where gas is stored within coal deposits or seams

DST – drill stem test

EBTIDA / EBITDAX – earnings before tax interest depreciation amortisation / and exploration expense

EIP – the Senex Employee Incentive Plan

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

ESG – environmental, social and governance risks

ESP – electric submersible pump

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

FY – financial year

Gross pay – the overall interval in which hydrocarbons are present in a well

GSA – gas sales agreement

HSE – health safety and environment

JV – joint venture

KPI – key performance indicator

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

LPG – liquefied petroleum gas

LTI – long term incentive

Market capitalisation – the Company’s market value at a given date and is calculated as the number of shares on issue multiplied by the closing share price on that given date

mbbls – thousand barrels

mmbbls – million barrels

mmboe – million barrels of oil equivalent

mscf/day – thousand standard cubic feet per day

mmscf/d – million standard cubic feet per day

Net pay – the smaller portions of the gross pay that meet local criteria for pay; porosity, permeability and hydrocarbon saturation parameters such that the reservoir is capable of producing hydrocarbons

NPAT – net profit after tax

OGIP – original gas in place

Oil – a mixture of liquid hydrocarbons of different molecular weights

Origin – Origin Energy Limited

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)

Planet – Planet Gas Limited

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 – is the volume of hydrocarbons produced in production operations (including extended production testing)

RRR – reserves placement ratio which is calculated as the summation of estimated reserves additions and revisions divided by estimated production for the period before acquisitions and divestments

Reserve – commercially recoverable resources which have been justified for development, as defined in the SPE PRMS

SACB JV – the South Australian Cooper Basin Joint Venture which involves Santos (as operator), Beach and Origin

Sales volumes – equal to production less volumes of hydrocarbons consumed in operations (fuel, flare, vent and other shrinkage) and inventory movements

Santos – Santos Limited

Senex – Senex Energy Limited

SPE PRMS – the Petroleum Resources Management System 2007, published by the Society of Petroleum Engineers

STI – short term incentive

Stuart – Stuart Petroleum Pty Ltd (formerly Stuart Petroleum Limited)

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

tcf – trillion cubic feet of gas

TFR – total fixed remuneration and it is the base component of each Senex employee’s remuneration (principally annual salary and superannuation contributions) which is not at risk

TRIFR – total recordable injury frequency rate

TSR – total shareholder return

USD – United States dollars

VWAP – volume weighted average price