Company lists · Data refreshed September 2026

Top 24 Oil and gas exploration companies based in Australia

Name: Oil and gas exploration companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 187 companies tracked

RevenueBase identified 187 oil and gas exploration companies headquartered in Australia as of September 2026 and tracks 17,004 professional contacts across them, including 7,784 with verified work emails. Perth is the largest hub.

This list covers oil and gas exploration companies headquartered in Australia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

187Companies

17,004Contacts tracked

7,784Verified emails

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The 24 largest oil and gas exploration companies based in Australia

Ranked by team size

Top 24 of 187 oil and gas exploration companies based in Australia, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to oil and gas exploration companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Santos LTD	Indirect evidence	Adelaide, AustraliaHQ checked Sep 17, 2026	1,001-5,000	6,366 contacts →
	Indirect evidence “Our purpose is to provide reliable and affordable energy to help create a better world for everyone.” Source: RevenueBase Database · checked Sep 17, 2026
2	Woodside Energy	Indirect evidence	Perth, AustraliaHQ checked Sep 17, 2026	1,001-5,000	5,559 contacts →
	Indirect evidence “We aim to thrive through the global energy transition with a low-cost, lower-carbon, profitable, resilient and diversified portfolio.” Source: RevenueBase Database · checked Sep 17, 2026
3	Beach Energy LTD	Strong evidence	Adelaide, AustraliaHQ checked Sep 17, 2026	501-1,000	507 contacts →
	Strong evidence “A proud Australian pioneer, Beach Energy is an ASX-listed oil and gas exploration and production company headquartered in Adelaide, South Australia.” Source: RevenueBase Database · checked Sep 17, 2026
4	Ausdrill	Partial evidence	Kewdale, AustraliaHQ checked Sep 17, 2026	201-500	407 contacts →
	Partial evidence “Ausdrill is a premium Australian drilling company that provides exploration drilling, production drilling, blasting services and geotechnical services for mining majors through to…” Source: RevenueBase Database · checked Sep 17, 2026
5	Karoon Energy	Strong evidence	Southbank, AustraliaHQ checked Sep 17, 2026	51-200	248 contacts →
	Strong evidence “Karoon Energy is an ASX listed international oil and gas exploration and production company with assets in Brazil, the United States of America and Australia.” Source: RevenueBase Database · checked Sep 17, 2026
6	ROC OIL Company Limited	Strong evidence	Sydney, AustraliaHQ checked Sep 17, 2026	51-200	231 contacts →
	Strong evidence “Roc Oil Company Limited ('ROC') is one of Australia's leading independent upstream oil and gas companies, with a presence in China, South East Asia and Australia.” Source: RevenueBase Database · checked Sep 17, 2026
7	Strike Energy	Partial evidence	Western Australia, AustraliaHQ checked Sep 17, 2026	51-200	84 contacts →
	Partial evidence “Strike Energy aspires to be the lowest cost onshore gas producer in Australia, in order to ensure affordable and abundant natural gas is available to support the energy transition…” Source: RevenueBase Database · checked Sep 17, 2026
8	Central Petroleum	Strong evidence	Brisbane, AustraliaHQ checked Sep 17, 2026	51-200	82 contacts →
	Strong evidence “Central Petroleum Limited (Central) is a well-established and emerging, ASX-listed Australian oil and gas producer (ASX: CTP).” Source: RevenueBase Database · checked Sep 17, 2026
9	Denison GAS Limited	Strong evidence	Sydney, AustraliaHQ checked Sep 17, 2026	51-200	64 contacts →
	Strong evidence “Denison Gas is a rapidly expanding Australian oil and gas exploration and production company.” Source: RevenueBase Database · checked Sep 17, 2026
10	Silver City Drilling	Strong evidence	Alice Springs, AustraliaHQ checked Sep 17, 2026	51-200	53 contacts →
	Strong evidence “Silver City Drilling (NSW) Pty Ltd is an Independently Owned Australian company specialising in Water Drilling, Mineral Drilling and Oil & Gas.” Source: RevenueBase Database · checked Sep 17, 2026
11	Southern Geoscience Consultants	Indirect evidence	West Perth, AustraliaHQ checked Sep 17, 2026	51-200	49 contacts →
	Indirect evidence “Established in 1985, SGC provides integrated geophysical solutions that identify value-added outcomes for the natural resources sectors.” Source: RevenueBase Database · checked Sep 17, 2026
12	ADZ Energy AUS	Strong evidence	Brisbane City, AustraliaHQ checked Sep 17, 2026	11-50	46 contacts →
	Strong evidence “ADZ Energy Pty Ltd, headquartered in Queensland, specialises in exploration and production from its high-quality portfolio of oil and gas assets in Queensland, South Australia…” Source: RevenueBase Database · checked Sep 17, 2026
13	Melbana Energy Limited	Strong evidence	Sydney, AustraliaHQ checked Sep 17, 2026	n/a	44 contacts →
	Strong evidence “Melbana Energy Limited is an Australian ASX listed, independent oil and gas company with a portfolio of exploration, appraisal and development stage opportunities in Cuba…” Source: RevenueBase Database · checked Sep 17, 2026
14	Hiseis	Indirect evidence	Subiaco, AustraliaHQ checked Sep 17, 2026	11-50	36 contacts →
	Indirect evidence “HiSeis - Seismic by Fleet is a mining technology specialised in hard rock seismic solutions for targeted orebody discovery.” Source: RevenueBase Database · checked Sep 17, 2026
15	Geological Solutions	Indirect evidence	Cooroy, AustraliaHQ checked Sep 17, 2026	51-200	36 contacts →
	Indirect evidence “Geological Solutions is a multi-disciplinary consultancy company that specialises in the provision of experienced, well trained quality driven geoscientists and field personnel to…” Source: RevenueBase Database · checked Sep 17, 2026
16	Gnomic Exploration Services PL	Partial evidence	Townsville, AustraliaHQ checked Sep 17, 2026	51-200	34 contacts →
	Partial evidence “Gnomic Exploration Services Pty Ltd is the most highly regarded exploration and mining services company in North Queensland.” Source: RevenueBase Database · checked Sep 17, 2026
17	Velseis Pty. LTD	Indirect evidence	Brisbane, AustraliaHQ checked Sep 17, 2026	51-200	32 contacts →
	Indirect evidence “Velseis is widely regarded as Australia’s most experienced seismic contractor, leading the industry in high resolution seismic data acquisition, processing, and interpretation.” Source: RevenueBase Database · checked Sep 17, 2026
18	Australasian Mining Services	Partial evidence	Forrestfield, AustraliaHQ checked Sep 17, 2026	11-50	29 contacts →
	Partial evidence “AUSTRALASIAN MINING SERVICES PTY LTD (AMS) is a national supplier and manufacturer of products and services to the mineral exploration, mining, waterwell and geotechnical sectors…” Source: RevenueBase Database · checked Sep 17, 2026
19	Mcelroy Bryan Geological Services Mbgs	Partial evidence	Chatswood, AustraliaHQ checked Sep 17, 2026	11-50	29 contacts →
	Partial evidence “ABOUT US MBGS provides a reliable quality service to exploration and mining companies and financial institutions through independent JORC resource appraisals, technical reviews…” Source: RevenueBase Database · checked Sep 17, 2026
20	Bass OIL Limited	Strong evidence	Melbourne, AustraliaHQ checked Sep 17, 2026	11-50	27 contacts →
	Strong evidence “Bass Oil Limited is an ASX-listed exploration and production company featuring low cost onshore oil production in Indonesia and a management and Board team with a proven track…” Source: RevenueBase Database · checked Sep 17, 2026
21	Blue Energy	Strong evidence	Brisbane, AustraliaHQ checked Sep 17, 2026	501-1,000	27 contacts →
	Strong evidence “Blue Energy has a vision to become Australia’s leading mid-sized oil and gas exploration and production company and to continue to build the 3P reserve base to 3TCF whilst growing…” Source: RevenueBase Database · checked Sep 17, 2026
22	Onspec DAQ	Indirect evidence	Chinchilla, AustraliaHQ checked Sep 17, 2026	51-200	26 contacts →
	Indirect evidence “OnSpec is a forward-thinking energy technology company born in Australia, serving clients worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
23	GAP Geophysics Australia PTY Limited	Partial evidence	Windsor, AustraliaHQ checked Sep 17, 2026	11-50	26 contacts →
	Partial evidence “Gap Geophysics Australia is a Dias Geophysical company - offering a range of proprietary & unique geophysical exploration survey techniques, with advanced instrumentation and high…” Source: RevenueBase Database · checked Sep 17, 2026
24	Twinza OIL Limited	Strong evidence	West Perth, AustraliaHQ checked Sep 17, 2026	11-50	21 contacts →
	Strong evidence “Twinza Oil Limited is an energy company developing the Pasca A liquids-rich gas field offshore Papua New Guinea.” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: oil and gas exploration companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names oil and gas exploration companies.
Partial evidence: Its own public description names part of oil and gas exploration companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil and gas exploration companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 24 of 187 oil and gas exploration companies based in Australia

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Oil and gas exploration companies based in Australia at a glance

As of Sep 17, 2026

45.8%Verified-email coverage

90.9Average contacts per company

1-10Median size (employees)

17.1%Largest-city concentration · Perth

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 187 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among oil and gas exploration companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Australia whose own description of what they do matches “oil and gas exploration companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names oil and gas exploration companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among oil and gas exploration companies, and records with no verified work email. Companies headquartered outside Australia are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 7,784 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Oil and gas exploration companies by metro

Oil and gas exploration companies in Perth32

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names oil and gas exploration companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many oil and gas exploration companies are there based in Australia?

RevenueBase identified 187 oil and gas exploration companies headquartered in Australia as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Santos LTD, headquartered in Adelaide, tops this list with the largest team on record.

Which city has the most oil and gas exploration companies?

Perth leads with 32 headquartered companies, followed by Sydney (18) and Melbourne (17).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 7,784 verified decision-maker contacts tracked across these 187 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.