Arkhos began in 1971 as a three-person exploration company with a single lease in the Permian Basin. Today 21,400 people in 27 countries find, produce and deliver energy with the same respect for the subsurface.
Arkhos was founded by geologists who believed that patient, careful work in the subsurface would outlast any boom. That belief still shapes how we choose projects, treat partners and measure success.
Our values are written into the Code of Conduct, every performance review and the annual bonus. Safety and emissions measures make up 30% of the scorecard that sets executive pay, and an independent assurer checks the results.
Everyone who works on an Arkhos site, employee or contractor, should go home in the same condition they arrived. Anyone can stop a job they believe is unsafe, and no one is ever penalised for doing so.
2025 · TRIR 0.19 · fatalities 0
We earn our place in each community by listening first and by leaving land and water in better condition than we found them. Host communities share in local jobs, contracts and long-term investment.
Routine flaring −86% since 2016
We report what we measure, including the numbers that do not flatter us. Independent auditors check our reserves, emissions and payments to governments every year.
Climate targets third-party assured
Every well we drill teaches us something about the rock, and we make sure the next team can use it. That habit turned a Permian start-up into a company that processed 1.6 petabytes of seismic data in 2025.
R&D spend $640 million in 2025
From a two-room office in Houston to 14 producing hubs on four continents. Our people come from 92 countries, and many of our senior leaders started on a rig, at a plant or with a seismic crew.
21,400people
Employees, working in 27 countries
Year-end 2025
92nationalities
Represented across our workforce, from Calgary to Perth
Year-end 2025
14producing hubs
On four continents, onshore and in deepwater
Oil 54% · gas 46%
$640million
Invested in research and development in 2025
Imaging · digital twins · CCS
Company at a glance
Each milestone below changed what Arkhos could do next. Pick a year on the rail, or drag along it, to move through the story.
1971
Three Houston geologists set up Arkhos Exploration with one lease in Midland County, Texas. Their first well, Arkhos-Spraberry No. 1, tests at 380 barrels of oil a day and pays back its cost in 14 months.
1979
A jack-up rig working in 90 metres of water on the Louisiana shelf finds gas-condensate at 4,300 metres. The Pelican Shoal discovery pays for the company's first steps into deeper water.
1984
Arkhos Exploration lists under the ticker AKHS and raises $210 million to fund its offshore programme. The first annual report counts 640 employees and production of 38,000 barrels of oil equivalent a day.
1988
Arkhos buys an 80% operated interest in the Tern discovery in the Northern North Sea and opens its Aberdeen office. Tern still produces today as a subsea tieback, and it will run on power from shore by 2027.
1996
Buying the Bayshore refinery in Corpus Christi gives Arkhos its first refining capacity and a home for its own Gulf Coast crude. Successive upgrades have since raised Bayshore to 420 kbbl/d with a Nelson complexity of 12.1.
2004
Refining, gas and international production now make up most of the business, so the company takes the name it carries today. The ticker stays the same, and so does the Houston headquarters.
2011
Arkhos signs a 30-year joint venture to develop Al Noor, a sour gas field with a high hydrogen sulphide content that few operators had attempted. Al Noor now processes 1.2 bcf/d, and its 2026 expansion added 300 MMscf/d.
2016
Arkhos measures operated Scope 1 and 2 emissions at every asset and fixes 2016 as its baseline year. Methane intensity stands at 0.21%, and the company sets its first target to cut it by two-thirds.
2019
Train 1 at Corvina LNG in the Pilbara starts up on gas piped from the Corvina Fields in the Browse Basin. The first cargo sails for Japan in November, and Train 2 will lift the plant to 7.6 mtpa in early 2027.
2021
A 20 kbbl/d renewable diesel unit starts up at the Port Arden refinery in Rotterdam, running on waste oils and animal fats. Elena Varga, who joined Arkhos in 1998 as a reservoir engineer, becomes Chief Executive Officer.
2024
Our largest operated project starts production from the Santos Basin pre-salt, in 2,140 metres of water off Brazil. Halcyon passed 100 million barrels in 2026 with all associated gas reinjected.
2026
On 14 October Arkhos and its partners sanction phase one of Skerry Point, which will store CO₂ from industrial sites 2,600 metres below the seabed of the Central North Sea. Injection starts in 2027, and the project anchors our goal of 10 Mtpa of storage by 2035.
Our executive committee runs the company day to day. An independent Board, led by Margaret Ellison, oversees strategy, risk and pay. Select a profile to read more.
How we are governedExecutive committee
Chief Executive Officer
Strategy, capital discipline and the pace of the energy transition.
Joined 1998View profile
Chief Financial Officer
Balance sheet strength, capital allocation and returns to shareholders.
Joined 2014View profile
Chief Operating Officer
Safe, reliable operations across 14 producing hubs and three refineries.
Joined 2003View profile
Chief Technology Officer
Subsurface imaging, digital twins and research and development.
Joined 2009View profile
EVP, Low Carbon Solutions
Carbon storage, renewable power for our operations and lower-carbon fuels.
Joined 2012View profile
General Counsel
Legal affairs, ethics and compliance, and secretary to the Board.
Joined 2016View profile
Board of directors
Chair of the Board
Independent Chair since 2020. Leads the Board's oversight of strategy, risk, climate and executive pay, and its annual review of every capital project above $1 billion.
Independent directorView profile
Each business unit runs from a regional office near its fields and plants. Select a region to focus the map and the office directory.
Share of 2025 production, by region.
Showing all eight regional offices.
Americas · Headquarters
Corporate centre, integrated operations centre and the US upstream business.
Arkhos Center, 2100 Westheimer Ridge, TX 77056
Americas
Canadian gas business, including Montney Gas in British Columbia.
Eighth Avenue SW, Downtown Calgary, Alberta
Americas
Brazil deepwater business and the Halcyon FPSO operations team.
Avenida Almirante Barroso, Centro
Europe
North Sea business unit, running Tern Field and Skerry Point CCS.
Westhill Business Park, Aberdeenshire
Europe
Norway business unit and the Fenris gas-condensate field.
Forus business district, Rogaland
Middle East and Africa
Middle East gas hub, home of the Al Noor joint venture team.
Al Maryah Island, Abu Dhabi
Middle East and Africa
West Africa business unit and the Heron Deepwater FPSO.
Victoria Island, Lagos
Asia Pacific
Australia LNG business, Corvina LNG and the Corvina Fields.
St Georges Terrace, Perth CBD
We also keep site offices at all 14 producing hubs and our three refineries, including Jurong Island, Singapore.
The Board sets our strategy and risk appetite and holds management to account. Our Code of Conduct turns those decisions into the behaviour we expect from every employee, contractor and partner.
Speak-up line
24/7 · 30 languages+1 (800) 555-0199
Toll-free from the US and Canada, run by an independent provider. Local numbers for all 27 countries are listed in the Code of Conduct, and you can stay anonymous where local law allows.
The Board has 11 directors. Nine are independent, including the Chair, and the roles of Chair and Chief Executive are held by different people. Four standing committees, each led by an independent director, carry out detailed oversight.
Our Code of Conduct sets out how we work with colleagues, partners, governments and communities. It applies to every employee, director and contractor, in every country.
Everyone completes training each year and confirms in writing that they have followed the Code. In 2025, 99.6% of employees completed the annual certification, and managers cannot receive a bonus until their teams have done so.
Anyone can raise a concern about Arkhos by phone or online, at any hour, in 30 languages. The line is run by an independent provider, and reports can be made anonymously where local law allows.
We do not tolerate retaliation against anyone who raises a concern in good faith. The Ethics and Compliance team reviews every report, and a summary goes to the Audit and Risk Committee each quarter. We received 412 reports in 2025.
We do not offer, pay or accept bribes or facilitation payments, anywhere and at any value. Agents, joint venture partners and suppliers in higher-risk countries pass risk-based due diligence before we sign a contract with them.
Our contracts give us the right to audit those partners, and we publish our payments to governments country by country every year.
We follow the UN Guiding Principles on Business and Human Rights and the Voluntary Principles on Security and Human Rights wherever we operate. Every supplier signs our Supplier Code of Conduct.
We audit our highest-risk suppliers on site for labour conditions, recruitment fees and worker accommodation, and carried out 146 audits in 2025. Where we find a problem, we work with the supplier to fix it and track each finding to closure.
Reading the rock taught us patience and rigour. We now apply the same discipline to how we cut emissions, how we treat our neighbours and where we invest the next dollar.
We hire geoscientists, engineers, operators, traders and specialists in 27 countries, and we work with partners and suppliers on four continents. Tell us what you would bring.