Eastern Siberia and the Far East (Onshore)
The Eastern Siberia and the Far East are home to the Company’s major upstream assets. High levels of hydrocarbons production were attained in 2018 at the Vankor cluster and the Verkhnechonskoye field, of above 36.3 mmtoeExcluding production at the Lodochnoye Field.
In 2018, a growth of liquid hydrocarbons production in the Eastern Siberia and the Far East reached 8.1% compared to 2017 and amounted to 35.7 mmtExcluding production at the Lodochnoye Field. The bulk of the production is provided by the Vankor cluster fields (60% of total production in these regions) and by JSC Verkhnechonskneftegaz (23% of total production).
Thanks to the development of new projects, production at JSC Vostsibneftegaz and LLC Taas-Yuryakh Neftegazodobycha more than doubled year-on-year. According to the approved plans, the company provided for a phased commissioning of the Tagulskoye and Kuyumbinskoye fields and the second phase of the Srednebotuobinskoye field.
The Vankor Cluster
LLC RN-Vankor operates the development project for the Vankor cluster fields, including the Vankor field, which is the largest discovery in the last 20 years. The cluster also contains the Suzunskoye, Tagulskoye, and Lodochnoye fields located in the Turukhansky and Taymyrsky municipal districts in the Krasnoyarsk Territory’s north.
Since the startup of commercial production at the Vankor field in August 2009, cumulative oil and gas condensate production exceeded 169 mmt due to the implementation of well interventions program across the existing wells and drilling new wells.
The Vankor field was the first on the territory of the Russian Federation to successfully conduct pilot tests of directional drilling of sections for a surface hole of the casing string with 245 mm diameter. The technology reduces risks of complications in the drilling process and decreases the number of technological operations and well drilling cycle. Rolling-out of the technology to other assets was started.
The company continues to drill production wells, as well as build top-priority facilities and infrastructure facilities across the Vankor cluster new fields.
The second phase of construction is undergoing at the Suzunskoye field, which allows for the construction of gas program facilities (gas treatment unit with a compression station, Suzun-Vankor inter-field oil pipeline, and gas wells in cluster pads). The field production consistently exceeds 4 mmt.
As a result of successful completion of the pilot development phase, the Tagulskoye Field was put into operation. 2018 production volume using mobile oil treatment units totaled 1.3 mmt which corresponds to the level of the approved initial field development plan.
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 13 Rosneft licenses throughout the Irkutsk Region and the Krasnoyarsk Territory.
Hydrocarbon production at Verkhnechonskneftegaz totaled 9.0 mmtoe in 2018, with liquid hydrocarbons production of 8.2 mmt. The Verkhnechonskoye field is being developed using advanced technologies such as hydraulic fracturing and multistage hydraulic fracturing (MSHF). There are also ongoing initiatives to optimize well construction and completion practices, monitor pay-zone performance, and optimize the operation of infrastructure facilities. Incremental oil and gas condensate production increased by 7% year-on-year due to the commissioning of new wells and well interventions.
In order to expand the resource base, JSC Verkhnechonskneftegaz conducts pilot production at the North Danilovskoye field as an operator.
East Siberian Oil and Gas Company (Vostsibneftegaz)
East Siberian Oil and Gas Company operates five license areas (including two license areas as a subsoil user) in the Krasnoyarsk Territory. Vostsibneftegaz is currently conducting a project to develop an expanded first stage area of the Yurubcheno-Tokhomskoye field, located in the Evenki District of the Krasnoyarsk Territory.
Owing to the optimal selection of approaches to commissioning new facilities, rapid construction of production infrastructure and adoption of advanced drilling technologies, hydrocarbons production at the field more than tripled in 2018 and amounted to 2.3 mmtoe. Since launch of the Yurubcheno-Tokhomskoye field, one of the largest in the Krasnoyarsk Territory, the cumulative production has amounted to more than 4 mmt.
Innovative technologies are actively deployed at the project, in order to expand the productive deposit coverage and to achieve higher oil recovery rates. The methods and approaches successfully tried and tested at the Yurubcheno-Tokhomskoye field are now considered as core practices, and Rosneft plans to roll them out to similar projects.
LLC Taas-Yuryakh Neftegazodobycha operates 10 licenses (including two licenses as the subsoil user) in the Republic of Sakha (Yakutia).
Taas-Yuryakh Neftegazodobycha is currently developing the Central Block and the Kurungsky license area of the Srednebotuobinskoye oil and gas condensate field. The Srednebotuobinskoye oil and gas condensate field is one of Rosneft’s three largest assets in the Eastern Siberia oil cluster.
In 2018, hydrocarbons output by Taas-Yuryakh Neftegazodobycha more than doubled year-on-year and increased to 3 mmtoe. The growth was due to commissioning the second phase of field facilities (oil pipeline, central production facility, and metering station) that support the oil treatment and delivery up to 5 mtpa. The Company continues the construction of infrastructure and site facilities, implementing the program of horizontal and multilateral wells, including under application of the Fishbones Stimulation Technology.