A new gas production center is actively evolving in the Yamal Peninsula. The center will eventually become a major contributor to the Russian gas industry development. Yamal will produce up to 360 billion cubic meters of gas per year.
Number of fields: 32.
Total reserves and resources of all fields in the Yamal Peninsula: 26.5 trillion cubic meters of gas, 1.6 billion tons of gas condensate, and 300 million tons of oil.
Production in Yamal: 2019: 96.3 billion cubic meters of gas.
Prospects: up to 360 billion cubic meters of gas per year.
Project scope
Bovanenkovo production zone
The Bovanenkovo production zone has the largest extraction potential and includes three fields: Bovanenkovskoye, Kharasaveyskoye, and Kruzenshternskoye (the licenses are held by the Gazprom Group). Its overall production is projected to reach 217 billion cubic meters of gas and 4 million tons of stabilized condensate per year.
Tambey production zone
The Tambey production zone comprises four fields: Tambeyskoye, Malyginskoye (the licenses are held by the Gazprom Group), Yuzhno-Tambeyskoye, and Syadorskoye.
Southern production zone
The Southern production zone includes nine fields: Novoportovskoye (the license is held by the Gazprom Group), Nurminskoye, Malo-Yamalskoye, Rostovtsevskoye, Arkticheskoye, Sredne-Yamalskoye, Khambateyskoye, Neytinskoye, and Kamennomysskoye. The zone is considered to be a priority oil production asset with a maximum annual output of 7 million tons.
Hydrocarbon transportation system
A next-generation gas transmission corridor linking the Bovanenkovskoye field to Ukhta is in place to supply gas from the Yamal Peninsula to Russia’s Unified Gas Supply System. Year-round oil shipments are made from the Arctic Gate oil loading terminal.
Infrastructure
A comprehensive support system is in operation for industrial and residential purposes. The system includes motor roads, power plants, a shift camp, industrial facilities, the 572-kilometer Obskaya – Bovanenkovo – Karskaya railroad, and an airport.
Project implementation
The largest field in Yamal in terms of explored gas reserves is Bovanenkovskoye. The Cenomanian-Aptian deposits of Bovanenkovskoye rank as a top-priority development target. In 2012, the field’s first gas production facility (GP-2) was brought onstream. The second (GP-1) and third (GP-3) gas production facilities were put into operation in 2014 and 2018, respectively. The three facilities have an aggregate design capacity of 115 billion cubic meters of gas per year. Bovanenkovskoye’s projected production will reach 140 billion cubic meters of gas per year as soon as the Company starts to develop the Neocomian-Jurassic deposits.
The Bovanenkovo – Ukhta gas trunkline became operational in 2012 and the Bovanenkovo – Ukhta 2 gas pipeline came onstream in early 2017
In 2016, the Novoportovskoye oil field and the Arctic Gate offshore oil loading terminal entered commercial operation.
Advanced technologies
Overcoming the Yamal Peninsula’s harsh climate and environment, Gazprom has made Yamal its launch pad for efficient, safe and innovative technologies and technical solutions.
The Yamal megaproject is unparalleled in terms of complexity, as its hydrocarbon reserves are concentrated in a hard-to-reach area with exceedingly difficult climatic conditions. The region is characterized by permafrost, long winters, and low mean temperatures (up to minus 50 degrees Celsius). In summer, 80 per cent of Yamal’s territory is covered by lakes, swamps and rivers, which considerably limits the possibilities for industrial construction. Gazprom has been employing efficient, safe and innovative technologies and technical solutions in Yamal. Many of those innovations were developed at the Company’s request by leading Russian research institutions and companies.
Production technologies
For the first time in Russia, a single infrastructure is used to produce gas from the Cenomanian (at a depth of 520–700 meters) and Aptian-Albian (1,200–2,000 meters) deposits of the Bovanenkovskoye field. This approach helps save significant amounts of money on pre-development, accelerate construction processes, and improve field development efficiency.
Field development started with the lower gas deposits, which have a higher formation pressure. As the pressure levels out, the upper deposits are brought into development. Lower-pressure Cenomanian deposits are developed last in order to compensate for the natural decrease in gas production from the Aptian deposits. Accordingly, separate groups of production wells are drilled for individual deposits and connected to a unified gas collecting network on a step-by-step basis.
Due to difficult terrain conditions, the regulatory framework for well design had to be updated. The new regulations allowed the Company to shorten the distance between wellheads in clusters from 40 meters to 15–20 meters and to reduce to a minimum the acreage of and pre-development operations for well clusters, access roads and other communications while ensuring industrial safety.
Work processes at Bovanenkovskoye are highly automated thanks to the use of lightly manned technologies. For the first time in Gazprom’s history, automated well hookup modules (MOS-2) are being used in field development. The modules are employed to control and manage Christmas trees and ensure reliable well operation in case of hydrate formation.
To prepare gas for transmission, the Company uses the most cutting-edge and eco-friendly method of low-temperature separation with domestically-produced turbo expanders.
Transportation technologies
Gas from Yamal is injected into Russia’s Unified Gas Supply System via next-generation gas pipelines operating at a pressure of 11.8 MPa (120 atm). Gazprom managed to achieve the record-high pressure in its offshore pipelines primarily by using custom-made pipes. The 1,420-millimeter pipes with internal flow coating were made by Russian manufacturers from grade K65 (X80) steel.
The submerged crossing under Baidarata Bay proved to be the biggest challenge in the construction of the gas transmission system. Baidarata Bay is marked by unique environmental conditions: despite its shallow depth, it has frequent spells of stormy weather, with complex bottom sediments and frost penetration to the bottom in winter. For that section, the Company used 1,219-millimeter concrete-coated pipes designed for the working pressure of 11.8 MPa. As a result, Gazprom set a precedent for the national and global gas industries by laying pipes with such specifications in such a difficult environment.
MRTS Defender pipe-laying ship in Baidarata Bay
The Arctic Gate offshore oil loading terminal, which is located in Ob Bay, is also unique. It is designed to operate under extreme conditions, as temperatures in the region can drop below minus 50 degrees Celsius and ice can grow over two meters thick. The terminal has a two-tier protection system and complies with the most stringent requirements for industrial safety and environmental protection. The terminal’s equipment is fully automated and safely protected from hydraulic shocks. A special system allows for prompt undocking without depressurizing the units undergoing disconnection. The zero discharge technology prevents foreign substances from getting into Ob Bay, which is of paramount importance to the preservation of the Arctic environment. Moreover, the subsea pipeline that connects the terminal to the coastal tank battery is protected with an additional concrete shell.
Oil from Yamal being offloaded from Arctic Gate offshore terminal
Infrastructure construction technologies
The 572-kilometer Obskaya – Bovanenkovo – Karskaya railroad built by Gazprom ensures reliable all-weather communication between the Yamal Peninsula and continental Russia, as well as year-round cargo and passenger transportation. It is the only railroad in the world that can operate in such a harsh climate.
With a view to preserve the load-bearing capacity of permafrost, all construction operations for the core facilities were conducted in subzero temperatures. The railroad embankment was made from damp silty sand, which solidifies under low temperatures. A unique multi-layered heat insulation system was developed and employed to ensure roadbed stability in summer: expanded polysterene was laid over frozen sand and geotextile reinforcements were made.
The bridge over the Yuribey River floodplain posed the most difficulty to railroad builders. It has no precedent in bridge-building practices in terms of design and the climatic and geocryological conditions of construction and operation. At 3.9 kilometers in length, it is the world’s longest bridge beyond the Arctic Circle.
The builders managed to set up the bridge on a surface that is practically unfit for construction, as it consists of permafrost interspersed with cryopegs (saline water lenses in permafrost bodies that do not freeze even at minus 10 to 30 degrees Celsius). The bridge’s beams and truss were installed on 1.2–2.4-meter-wide metal pipes filled with reinforced concrete. The bridge supports go down in permafrost to a depth of 20 to 40 meters. Thanks to modern technologies and a special freezing method (thermal stabilization), the supports are virtually frozen into the ice (permafrost), further reinforcing the structure.
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[Russia] Yamal LNG
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