Eastern Siberia and the Far East (Onshore)
The Company continues to expand its operations in Eastern Siberia and the Far East. In 2019, these regions produced 41.5 mmtoe of hydrocarbons, including 35.1 mmt of liquid hydrocarbons. The bulk of production comes from the Vankor cluster fields* (52% of total production in these regions) and Verkhnechonskneftegaz (22% of total) Excluding the Lodochnoye field .
In 2019, new projects developed by Vostsibneftegaz and Taas-Yuryakh Neftegazodobycha helped increase production by more than 1.5 times year-on-year.
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 Taymyrsky municipal districts in the Krasnoyarsk Territory’s north.
In 2019, the Vankor cluster Excluding the Lodochnoye field produced 23.2 mmtoe of hydrocarbons, including 18.2 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 183 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 2019, it commissioned 41 new wells (up 7.9% year-on-year) which produced 0.9 mmt of oil and gas condensate. RN-Vankor increasingly relies on sidetracking, having drilled a total of 41 sidetracks in 2019, which resulted in 204 kt of incremental oil and gas condensate production.
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 oil and gas condensate field. Located in the Irkutsk Region, the field is the second largest in Eastern Siberia. Verkhnechonskneftegaz also operates 12 Rosneft licence areas throughout the Irkutsk Region and the Krasnoyarsk Territory.
In 2019, it produced 8.8 mmtoe of hydrocarbons, including 7.8 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. The average annual flow rate across new wells reached 80 t per day, up 17% year-on-year.
In May 2019, Verkhnechonskneftegaz started injecting gas into the Preobrazhensky horizon as part of its efforts to select an agent for reservoir pressure maintenance. It continues with well testing to monitor formation pressure dynamics at adjacent observation wells in order to assess post-injection effects. The test results will be produced as early as in 2020.
East Siberian Oil and Gas Company (Vostsibneftegaz)
East Siberian Oil and Gas Company operates five licence areas (including two licence areas as the subsoil user) in the Krasnoyarsk Territory. The company is currently running a project to develop an expanded high-priority area of the Yurubcheno-Tokhomskoye field, located in the Evenki District of the Krasnoyarsk Territory.
In 2019, East Siberian Oil and Gas Company increased its oil production by 1.8 times year-on-year to over 4.1 mmt. Since the start of development at the Yurubcheno-Tokhomskoye field, one of the largest in the Krasnoyarsk Territory, its cumulative production has exceeded 8 mmt.
Vostsibneftegaz uses innovations to increase exposure to deposits within the pay zone and enhance the oil recovery rate. Rosneft views the techniques and approaches it tried and tested at the Yurubcheno-Tokhomskoye field as its core solutions, planning to roll them out to other projects.
Taas-Yuryakh Neftegazodobycha operates 10 licence areas (including two licence areas as the subsoil user) in the Republic of Sakha (Yakutia).
Taas-Yuryakh Neftegazodobycha is currently developing the Central Block and the Kurungsky licence area of the Srednebotuobinskoye oil and gas condensate field, which is one of Rosneft’s top-3 assets in the Eastern Siberian oil cluster.
In 2019, Taas-Yuryakh Neftegazodobycha increased its production of liquid hydrocarbons by 1.4 times to 4 mmt. The growth was driven by expansion of the company’s production capacity under Phase 2 development programme and commissioning of a high-pressure pipeline to transport crude oil from the Srednebotuobinskoye field.
Taas-Yuryakh Neftegazodobycha continues to build infrastructure and on-site facilities and to drill horizontal and multilateral wells, including using Fishbones stimulation technology. In December 2019, Taas-Yuryakh Neftegazodobycha drilled a 12,792 m long multilateral well with a record 10,310 m long section in the pay zone.