Production

Tengizchevroil is a leading company that produces oil, gas and associated products that fuels the modern economy. Our history is closely interlinked with the rise of an independent Kazakhstan.

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Complex Technology Line – KTL

Tengizchevroil inherited an oil and gas separation plant when it took over operations at Tengiz in 1993. This first generation of the Tengiz plant is ...

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Complex Technology Line – KTL

Tengizchevroil inherited an oil and gas separation plant when it took over operations at Tengiz in 1993. This first generation of the Tengiz plant is called the KTLs (Russian for Complex Technology Lines). TCO has invested in expanding and improving the KTLs over the life of the operation. Today, the KTLs consist of five oil and gas processing trains and are now significantly more efficient and environmentally friendly. Started up in 1991, KTL-1 consists of two trains and has the capacity of around 7,000 tons per day per train. KTL-2, which also has two trains with the same capacity was successfully completed and started up in 1996. Last KTL train 5 was put on production in 2001 along with first oil from Korolev field. The capacity of train 5 is around 11-12,000 tons, per day.

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Second Generation Plant – SGP

TCO's production capacity has risen with the commissioning of the Second-Generation Expansion Project in 2008, which includes the Second Generation Pl...

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Second Generation Plant – SGP

TCO's production capacity has risen with the commissioning of the Second-Generation Expansion Project in 2008, which includes the Second Generation Plant (SGP) and Sour Gas Injection (SGI) facilities. This expansion allowed TCO not only to double oil production in Tengiz, but also to improve the environmental performance and increase production efficiency. TCO completed the expansion in the third quarter of 2008, which brought daily capacity to 75,000 metric tons (600,000 barrels) of crude oil and 22 million cubic meters (750 million standard cubic feet) of gas. SGP stabilizes and sweetens crude oil, as well as separates and processes natural gas into gas products and elemental sulfur. SGP is the largest single sour crude processing train in the world.

SGP

Sour Gas Injection – SGI

SGI re-injects one third of produced sour gas back into the Tengiz reservoir at very high pressures to maintain reservoir pressure. The injection comp...

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Sour Gas Injection – SGI

SGI re-injects one third of produced sour gas back into the Tengiz reservoir at very high pressures to maintain reservoir pressure. The injection compressor is like no other compressor in the world and represents the state of the art in sour gas injection technology. SGI enables about 25% of total TCO oil production as well as pressure maintenance to reservoir.

SGI

Tengizchevroil produces liquefied petroleum gas (LPG), dry gas and sulfur in addition to crude oil.

Products

Safety

TCO maintains a leading position in the field of industrial safety in terms of such standard indicators as lost working days incidents and the rate of reported incidents.

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Safety

TCO continues to achieve industry-leading safety results in standard industrial safety measurements such as Serious Incidents and Total Recordable Incidents.

Emergency Response And Oil Spill Readiness

Tengizchevroil meets the highest standards of Product Stewardship practices through managing safe transportation and quality control for its sales....

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Emergency Response and Oil Spill Readiness

Tengizchevroil meets the highest standards of Product Stewardship practices through managing safe transportation and quality control for its sales. A dedicated team of professionals focus on assessment and mitigation of potential health, environmental, safety, and quality risks for the entire product life cycle. This team promotes use of industry product stewardship best practices with customers and service providers through safety and technical audits. The Caspian Pipeline Consortium (CPC) is the primary route for TCO’s oil production. The 1,500 km long pipeline connects TCO’s Tengiz field to CPC’s terminal on the Black Sea.TCO also maintains contingent pipeline access to the Baltic Pipeline System and rail access to an oil terminal in Odessa, Ukraine. All LPG and sulfur shipments are delivered to customers and terminals via rail transportation routes.

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Working safely is a TCO core value and everyone's responsibility

In 2021, TCO employees and contractors worked over 123 million man-hours with 10 Days Away from Work incidents...

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Working safely is a TCO core value and everyone’s responsibility

In 2021, TCO employees and contractors worked over 123 million man-hours with 10 Days Away from Work incidents. While this is solid performance, TCO strives for zero workplace injuries and is continuously working to improve in this area. Living this commitment will ensure success in fatality prevention and process safety, the two cornerstones to incident-free construction and operations.

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Actions to prevent COVID-19 spread

TCO stays vigilant, acts responsibly and is cautious about the health and hygiene of each person and uses preventive measures to keep the workforce safe...

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Actions to prevent COVID-19 spread

TCO stays vigilant, acts responsibly and is cautious about the health and hygiene of each person and uses preventive measures to keep the workforce safe. We continue to record additional DAFW/ Medical cases associated with COVID-19 outbreak. In 2022, TCO started to return to the workplaces keeping the Rotational, 5/2 and Hybrid Working methods.

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Occupational Health and Safety Management Process

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Process Scope

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Working with TCO as a Business Partner

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Protection of people

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Occupational Health and Safety Management Process

The Contractor Health, Environment and Safety Management Process establishes clear accountabilities, ensures active engagement of contractors, and provides a consistent CHESM program to eliminate health, safety and environment (HSE) incidents and injuries involving contractors.

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Process Scope

The requirements and activities included in CHESM process are focused on defining TCO expectations regarding contractor HSE performance, the qualification of contractors and the monitoring of contractor performance against expectations.

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Working with TCO as a Business Partner

Contractors involved in activities presenting risks to workforce and process safety are subject to CHESM Qualification to evaluate HSE Management Systems and ensure adequate safeguards are in place and functioning before starting work at TCO Facilities.

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Protection of people

TCO's work is guided by two key principles: do it safely or not at all and there is always time to do it right. Every employee of TCO and its Business Partner companies is responsible for making sure that work can be safely started. Each person has the right to temporarily suspend or completely stop any work if unsafe behavior or conditions are observed. The TCO Safe Work Practices Management Group, together with other teams, ensure that Occupational Safety and Health (OSH) guidelines and procedures are continuously implemented and maintained.

TCO News

All TCO News

Boost to the protection of Atyrau’s water resources: TCO donates equipment worth 4 billion tenge

May 22, 2026, 04:10 by Uteshev, LLP]
Tengizchevroil (TCO) has donated specialized equipment worth more than 3.9 billion tenge to the municipal state enterprise Tabigat, operating under the Department of Natural Resources and Environmental Management of Atyrau Oblast. The project was implemented within the framework of social partnership and aims to develop environmental infrastructure in Atyrau Oblast, as well as to improve the effectiveness of environmental protection activities at the regional level.
Tengizchevroil (TCO) has donated specialized equipment worth more than 3.9 billion tenge to the municipal state enterprise Tabigat, operating under the Department of Natural Resources and Environmental Management of Atyrau Oblast. The project was implemented within the framework of social partnership and aims to develop environmental infrastructure in Atyrau Oblast, as well as to improve the effectiveness of environmental protection activities at the regional level. 
 
As part of the project, Tabigat received 34 units of specialized equipment, including crawler excavators, a swamp excavator, a Watermaster amphibious dredging machine, a motor grader, a truck crane, and other machinery. The transferred equipment significantly strengthens the enterprise’s material and technical base and expands its capacity to carry out environmental, restoration, and technical works. The use of crawler excavators and backhoe loaders will enable the clearing and rehabilitation of disturbed areas, reinforcement of shorelines and riverbeds, as well as the efficient execution of excavation and loading operations within environmental protection initiatives. Due to their high off-road capability, the equipment can be effectively used on difficult terrain and in hard-to-access areas. 
 
“Environmental protection is one of the company’s core values. By transferring this equipment, we are contributing to the practical, day-to-day work of protecting ecosystems, water resources, and natural areas of Atyrau Oblast. This cooperation reflects our commitment to strengthening partnerships aimed at the long-term conservation of the region’s natural environment” said Nurmukhamed Kartabayev, TCO General Manager of Policy, Government and Public Affairs. 
 
The use of the swamp excavator and the Watermaster amphibious machine is of particular importance, as they are designed to operate in wetlands, shallow waters, and coastal zones. This equipment allows for the cleaning and deepening of water bodies, removal of silt and excessive aquatic vegetation with minimal impact on ecosystems, which is crucial for maintaining natural balance and preventing the degradation of water resources. 
 
The deployment of a mobile pumping station expands capabilities in water flow management, flood response, and the implementation of restoration and emergency repair works. When combined with excavation equipment, it enables a more comprehensive and effective approach to addressing environmental and infrastructure challenges. 
 
A front loader, motor grader, truck crane, crane manipulator, semi-truck tractor, and low-bed trailer will provide logistical and technical support, accelerate the transportation of equipment and materials, and enhance safety and coordination during operations. 
 
“The new specialized equipment will allow us to significantly improve the efficiency and quality of our work, including in hard-to-access and environmentally sensitive areas. This expands our capabilities in environmental monitoring, restoration, and protection. The renewal of our equipment fleet will serve as a solid foundation for our activities for many years to come,” emphasized Aslanbek Ryszhanov, Head of Tabigat Municipal Enterprise. 
 
TCO continues to contribute to the conservation of regional biodiversity. For example, since 2017, TCO has been supporting the Atyrau Sturgeon Hatchery to help increase the broodstock population in the Caspian Sea and release juvenile sturgeon into the Ural River. In addition, when active bird nests are identified at company facilities, protective measures are implemented until chicks successfully fledge. The Tengiz area lies along a global bird migration corridor, including rare and endangered species; therefore, TCO has installed bird protection devices on overhead power lines. These insulating devices protect birds from electric shock when they meet live wires and power line structures. 

Boost to the protection of Atyrau’s water resources: TCO donates equipment worth 4 billion tenge

May 22, 2026, 04:10 by Uteshev, LLP]
Tengizchevroil (TCO) has donated specialized equipment worth more than 3.9 billion tenge to the municipal state enterprise Tabigat, operating under the Department of Natural Resources and Environmental Management of Atyrau Oblast. The project was implemented within the framework of social partnership and aims to develop environmental infrastructure in Atyrau Oblast, as well as to improve the effectiveness of environmental protection activities at the regional level.
Tengizchevroil (TCO) has donated specialized equipment worth more than 3.9 billion tenge to the municipal state enterprise Tabigat, operating under the Department of Natural Resources and Environmental Management of Atyrau Oblast. The project was implemented within the framework of social partnership and aims to develop environmental infrastructure in Atyrau Oblast, as well as to improve the effectiveness of environmental protection activities at the regional level. 
 
As part of the project, Tabigat received 34 units of specialized equipment, including crawler excavators, a swamp excavator, a Watermaster amphibious dredging machine, a motor grader, a truck crane, and other machinery. The transferred equipment significantly strengthens the enterprise’s material and technical base and expands its capacity to carry out environmental, restoration, and technical works. The use of crawler excavators and backhoe loaders will enable the clearing and rehabilitation of disturbed areas, reinforcement of shorelines and riverbeds, as well as the efficient execution of excavation and loading operations within environmental protection initiatives. Due to their high off-road capability, the equipment can be effectively used on difficult terrain and in hard-to-access areas. 
 
“Environmental protection is one of the company’s core values. By transferring this equipment, we are contributing to the practical, day-to-day work of protecting ecosystems, water resources, and natural areas of Atyrau Oblast. This cooperation reflects our commitment to strengthening partnerships aimed at the long-term conservation of the region’s natural environment” said Nurmukhamed Kartabayev, TCO General Manager of Policy, Government and Public Affairs. 
 
The use of the swamp excavator and the Watermaster amphibious machine is of particular importance, as they are designed to operate in wetlands, shallow waters, and coastal zones. This equipment allows for the cleaning and deepening of water bodies, removal of silt and excessive aquatic vegetation with minimal impact on ecosystems, which is crucial for maintaining natural balance and preventing the degradation of water resources. 
 
The deployment of a mobile pumping station expands capabilities in water flow management, flood response, and the implementation of restoration and emergency repair works. When combined with excavation equipment, it enables a more comprehensive and effective approach to addressing environmental and infrastructure challenges. 
 
A front loader, motor grader, truck crane, crane manipulator, semi-truck tractor, and low-bed trailer will provide logistical and technical support, accelerate the transportation of equipment and materials, and enhance safety and coordination during operations. 
 
“The new specialized equipment will allow us to significantly improve the efficiency and quality of our work, including in hard-to-access and environmentally sensitive areas. This expands our capabilities in environmental monitoring, restoration, and protection. The renewal of our equipment fleet will serve as a solid foundation for our activities for many years to come,” emphasized Aslanbek Ryszhanov, Head of Tabigat Municipal Enterprise. 
 
TCO continues to contribute to the conservation of regional biodiversity. For example, since 2017, TCO has been supporting the Atyrau Sturgeon Hatchery to help increase the broodstock population in the Caspian Sea and release juvenile sturgeon into the Ural River. In addition, when active bird nests are identified at company facilities, protective measures are implemented until chicks successfully fledge. The Tengiz area lies along a global bird migration corridor, including rare and endangered species; therefore, TCO has installed bird protection devices on overhead power lines. These insulating devices protect birds from electric shock when they meet live wires and power line structures.