Eastern Siberia and the Far East (Onshore)
The Company continues to expand its operations in Eastern Siberia and the Far East. In 2020, these regions produced 38 mmtoe of hydrocarbons, including 32 mmt of liquid hydrocarbons.
The bulk of production comes from the Vankor cluster fields (52% of total production in the region) and Verkhnechonskoye field (20%).
RN-Vankor operates the development project for the Vankor cluster fields, including the Vankor (the largest discovery in the last 20 years), Suzunskoye, Tagulskoye and Lodochnoye fields located in the Turukhansky and Taimyrsky municipal districts in the Krasnoyarsk Territory’s north.
In 2020, the Vankor cluster produced over 20 mmtoe of hydrocarbons, including more than 15 mmt of liquid hydrocarbons.
Since the commencement of commercial production at the Vankor field in August 2009, cumulative oil and gas condensate production has exceeded 194 mmt on the back of a well intervention programme covering the existing wells and the commitment to drill new wells.
RN-Vankor leverages horizontal wells to develop the Vankor field. In 2020, it commissioned 54 new wells there (up 32% year-on-year) which produced 0.8 mmt of oil and gas condensate. At this field, RN-Vankor increasingly relies on sidetracking, having drilled a total of 61 sidetracks in 2020 (up 49% vs 2019). This resulted in 552 kt of incremental oil and gas condensate production (up 2.7x).
RN-Vankor continues to drill production wells and build top-priority facilities and infrastructure at new fields of the Vankor cluster.
Verkhnechonskneftegaz explores and develops the Verkhnechonskoye field in the Irkutsk Region, which is one of the largest fields in Eastern Siberia.
In 2020, the company produced 8.8 mmtoe of hydrocarbons, including 7.7 mmt of liquid hydrocarbons. The Verkhnechonskoye field is being developed using advanced technologies. There are also ongoing initiatives to streamline well construction and completion practices, monitor pay zone performance, and optimise operation of infrastructure facilities.
In order to develop under-gas-cap zones at the Verkhnechonskoye field, the company has been working to improve the drilling of multilateral wells that help maintain the pressure drawdown at a minimal level to prevent gas blowouts. In 2020, Verkhnechonskneftegaz commissioned seven wells with an average initial flow rate of 76.7 t per day, a slight improvement vs the 72.6 t per day in the previous year. Thanks to this method of pay zone penetration and the accelerated commissioning of new wells, the incremental production target for new wells was exceeded by 19%.
Taas-Yuryakh Neftegazodobycha is developing the Central Block and the Kurungsky licence area of the Srednebotuobinskoye field, which is one of Rosneft’s Top 3 assets in the Eastern Siberian oil cluster.
In 2020, the company produced 5.5 mmtoe of hydrocarbons, including 4.8 mmt of liquid hydrocarbons (a 21% year-on-year increase).
55 new wells were drilled, all horizontal. The average flow rate of new wells increased by 39% year-on-year to 105 t per day (from 76 t per day in 2019).
Vostsibneftegaz is running a project to develop an expanded high-priority area at the Yurubcheno-Tokhomskoye field, located in the Evenki District of the Krasnoyarsk Territory.
In 2020, Bashneft-Dobycha produced 3.3 mmtoe of hydrocarbons, including 3 mmt of liquid hydrocarbons.
It performed 46 well interventions, up 5% year-on-year, including new well drilling and sidetracking, which resulted in an incremental production of 535 kt.