Mamontovskoye (Entelskaya Area) is a producing conventional oil field located onshore Russia and is operated by RN-Yuganskneftegaz. The field is located in block Mamontovsky.

Field participation details

The field is owned by Rosneft Oil.

Production from Mamontovskoye (Entelskaya Area)

The Mamontovskoye (Entelskaya Area) conventional oil field recovered 90.81% of its total recoverable reserves, with peak production in 1986. The peak production was approximately 705.82 thousand bpd of crude oil and condensate. Based on economic assumptions, production will continue until the field reaches its economic limit in 2044.

Remaining recoverable reserves

The field is expected to recover 446.17 Mmboe, comprised of 422.75 Mmbbl of crude oil & condensate and 140.51 bcf of natural gas reserves. Mamontovskoye (Entelskaya Area) conventional oil field reserves accounts 0.10% of total remaining reserves of producing conventional oil fields globally.

About RN-Yuganskneftegaz

RN-Yuganskneftegaz, a subsidiary of Rosneft Oil Company is an oil and gas company that explores and develops oil and natural gas properties. The company’s activities include exploration, development and exploitation of hydrocarbon deposits. It also monitors and analyses the development of oil and gas fields. RN-Yuganskneftegaz’s oil reserves develops oil field that includes Pravdinsky, Mamontovsky, Yugansky and Priobskiy fields, among others. The company also provides license for oil reserves in Western Siberia. It has operations in Mamontovskoe, Malobalykskoe, Priobskoe and Prirazlomnoe, Russia. RN-Yuganskneftegaz is headquartered in Nefteyugansk, Russia.


Information on the field is sourced from GlobalData’s fields database that provides detailed information on all producing, announced and planned oil and gas fields globally. Not all companies mentioned in the article may be currently existing due to their merger or acquisition or business closure.