Tengizchevroil is a leading company in Kazakhstan that produces oil, gas and associated products that fuels the modern economy. Our history is closely interlinked with the rise of an independent Kazakhstan.We safely and reliably produce products that heat homes, fuel cars, support businesses and benefit society.Our primary purpose is to create value for the Republic of Kazakhstan, our four shareholders, the communities where we live and operate and ourselves. We are proud to contribute to the country’s economic progress and future.
Tengiz is located on the 2.500 square kilometer (1.600 square mile) project license area which includes the super giant Tengiz field, and a smaller but sizable Korolev field and several exploratory prospects.
(25 billion barrels)
(1,6 billion barrels)
Total recoverable crude oil in the Tengiz and Korolev fields is estimated to be 1.4 billion metric tonnes (11 billion barrels). The areal extent of the Tengiz reservoir is large, measuring 20 kilometers (12 miles) by 21 kilometers (13 miles).
Sales gas
(in cubic meters)
LPG
(in tonnes)
Sulfur
(in metric tonnes)
Goods and services spending
Total spending since 1993
as part of its Community Investments Program, TCO provided financial support to 20 projects
2023 Egilik Program budget
Realised by "Egilik" program since 1993
(in US dollars)
(in US dollars)
Direct financial payments include Kazakhstani employees' salaries, purchases of Kazakhstani goods and services, tariffs and fees paid to state-owned companies, profit distributions to Kazakhstani shareholder and taxes and royalties paid to the government.
Tengiz oil field, located on the west part of Kazakhstan, was discovered in 1979. 18 December 1979 the first well in the field gave oil from presalt formation at the depth of 4045 – 4095 meters. From beginning to middle of the eighties of the past century drilling works were aggressively conducted on the territory of the field, and more than hundred wells were drilled.
In June 1985, there was a fire in the well T-37. The fire lasted more than 400 days and was liquidated with assistance of specialists of the Cameron American company.
Since 6 April 1993 signing of the agreement about establishment of Kazakh-American Joint Venture on development of Tengiz field took place in Almaty. The Agreement was signed by President of the RoK Nursultan Nazarbayev and Head of American Chevron oil corporation Kenneth Derr. The established joint venture was given the name - TENGIZCHEVROIL.
In early 2001 CPC pipeline was put into operation for transportation of Tengiz field to oil stations of the Black Sea port.
In 2011 TENGIZCHEVROIL was awarded with Republican Paryz Grand Prize on social responsibility. The Awarding Ceremony was hosted in Astana, where President of Kazakhstan N. Nazarbayev. delivered the prize to TCO General Director Tim Miller.
In July 2016, TCO Partners announced the Final Investment Decision on FGP-WPMP. This was a significant milestone for TCO and the Republic of Kazakhstan. These records and achievements are made possible by TCO's highly skilled, professional and dedicated workforce. We will continue to invest in training and provide our workforce with experience-building development opportunities.
The TCO Way explains who we are, what we believe, how we achieve our mission and where we aspire to go...
The TCO Way (pdf) Read more 
Our mission is to create superior value for the Republic of Kazakhstan, our shareholders and employees.
To be the safest, most efficient and profitable oil and gas enterprise in the world, most admired for its people, partnership and performance.
The TCO Way explains who we are, what we believe, how we achieve our mission and where we aspire to go. It establishes a common understanding of our values and behaviors not only for us, but for all who interact with us.
We have an inclusive work environment that respects the uniqueness and diversity of cultures, and values individual talents, experiences and ideas.
We are committed to excellence and passionate about delivering results...
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We build trusting, productive and collaborative relationships with government...
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We have an unwavering commitment to personal and process safety, and protecting the environment...
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Our values define us and guide our actions in delivering results. We conduct our business in a socially and environmentally responsible manner, respecting the law and benefitting the communities where we work.
We are committed to excellence and passionate about delivering results. We strive for efficiency and continual improvement. We demonstrate TCO’s high-performance behaviors and hold ourselves accountable for our actions and results.
We are honest with ourselves and others. We earn trust by respecting and supporting each other and by operating with the highest ethical standards in all we do.
We build trusting, productive and collaborative relationships with government, our shareholders, communities, business partners, customers and each other. We are most successful when we succeed together.
We have an unwavering commitment to personal and process safety, and protecting the environment. We strive for incident free operations with a focus on preventing high consequence events.
Invest in people to develop and empower a highly competent workforce that delivers results the right way.
Deliver superior results through disciplined operational excellence, capital stewardship and cost efficiency.
Develop reserves to grow profits and returns by using our competitive advantages and high performance behaviors.
Differentiate performance through technology, ingenuity, and functional expertise.
Tengizchevroil LLP (hereinafter – TCO) broke its own record by reaching a 71% local content score in procurement, driven by increased purchases from domestic suppliers. It was announced by Konilkosh Suyessinov, Deputy General Director of TCO, during the KAZENERGY Energy Week - the XVI Eurasian Forum KAZENERGY.
On October 2–3, 2025, the XVI Eurasian Forum KAZENERGY took place in Astana as part of Kazakhstan Energy Week – 2025. This large-scale event in the energy sector brought together more than 300 participants from 50 countries. This year’s theme was “The New Energy Order: Focus on Middle Powers”, which includes the Republic of Kazakhstan — a country with a unique geographical position and tremendous energy potential.
On August 25, the representatives of Atyrau Oblast Ecology Department visited Tengiz field. The department head, Askar Zhussupov and his colleagues have visited TCO’s key environmental facilities such as Tengiz Eco Center (TEC), Water Treatment and Water Recycling Facilities (WTF/WRF). They have also checked the operation of automated emission monitoring system (AEMS).
Tengizchevroil LLP (hereinafter – TCO) broke its own record by reaching a 71% local content score in procurement, driven by increased purchases from domestic suppliers. It was announced by Konilkosh Suyessinov, Deputy General Director of TCO, during the KAZENERGY Energy Week - the XVI Eurasian Forum KAZENERGY.
On October 2–3, 2025, the XVI Eurasian Forum KAZENERGY took place in Astana as part of Kazakhstan Energy Week – 2025. This large-scale event in the energy sector brought together more than 300 participants from 50 countries. This year’s theme was “The New Energy Order: Focus on Middle Powers”, which includes the Republic of Kazakhstan — a country with a unique geographical position and tremendous energy potential.
On August 25, the representatives of Atyrau Oblast Ecology Department visited Tengiz field. The department head, Askar Zhussupov and his colleagues have visited TCO’s key environmental facilities such as Tengiz Eco Center (TEC), Water Treatment and Water Recycling Facilities (WTF/WRF). They have also checked the operation of automated emission monitoring system (AEMS).
2 quarter
