ALROSA and SakhaTransNefteGaz to Develop Hydrocarbon Fields in Yakutia
Diamond mining company ALROSA and national oil and gas firm SakhaTransNefteGaz have entered into a partnership to jointly explore hydrocarbon reserves at the Ulugur and Ergedzhei license blocks in the Republic of Sakha (Yakutia), Russia. The collaboration is carried out through a joint venture named UlugurNefteGaz, according to the company’s statement.
ALROSA confirmed to TASS that field seismic surveys have already been completed at both sites, covering 300 linear kilometers. Final reports on the seismic data are expected between August and September 2025, after which a decision will be made on whether to proceed with exploratory drilling.
The exploration phase is scheduled for completion by the end of 2027, including the registration of reserves with the Russian State Balance of Mineral Reserves.
“ALROSA is pursuing a long-term strategy to expand its hydrocarbon reserves to meet growing regional demand,” said Andrey Tsyganov, CEO of ALROSA-Gas.
“Our participation in the joint venture with the SakhaTransNefteGaz group will allow us to combine resources and create opportunities for expanding gas infrastructure in western Yakutia.”
The project officially launched in October 2024, with the signing of an investment agreement between ALROSA-Gas, SakhaTransNefteGaz, and Lensk-Gaz at the St. Petersburg International Gas Forum.
About the License Blocks
Ulugur Block
Located in the Lensky and Suntar districts of Yakutia, the Ulugur license area covers 4,205 sq. km, with estimated D2 category resources of 7.3 million tonnes of oil and 217.3 billion cubic meters of gas.Ergedzhei Block
Located in the Olekminsky and Suntar districts, this block spans 3,181 sq. km and holds estimated D2 category resources of 15 million tonnes of oil and 78.3 billion cubic meters of gas.
