- Aksai BMC
- Ala Oil
- Ap-Nafta Operating
- Aral Petroleum Capital
- Astana Munai Trade
- Atyrau University of Oil and Gas (AUNG)
- BMB Munai
- Canamens Energy Central Asia
- Caspian Gas Corporation
- Caspian GeoConsulting Services
- Caspian Minerals
- Crystal Management
- Ecogeoneftegaz
- EuroChem-Kamenkovskaya
- Embamunaigas
- Interoil
- Firma Ada
- Jupiter Energy Kamenistoye
- Kausar Oil & Gas
- Kazakh Institute of Oil and Gas
- KazKorMunai
- KazNIPIMunaigaz
- KazPetrol Group
- KING
- Kozhan
- Kolzhan
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- Lancaster Petroleum
- Lucent Petroleum
- LUKOIL Overseas Service Ltd.
- Maersk Oil Kazakhstan GmbH
- Maksat-Munai
- Max Petroleum NIPI KaspiMunaiGas
- Munaily Meken
- NOC KazMunayGas
- North Caspian Oil Development
- Nostrum Oil & Gas LLC
- N Operating Company
- REPSOL Exploracion Kazakhstan
- Sapa Barlau Service
- Satpayev Operating
- Sequa Petroleum Kazakhstan
- Silk Energy
- Timal Consulting Group
- TransNafta-Center
- Turan Barlau
- Turgai Petroleum
- Victoria Oil&Gas
- VietGazprom
- Visor Holding
- 3A Best Group
- Ural Oil And Gas
- Zhaikmunai
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