RusGasAlliance LLC

SK RusWelding LLC — Contractor

Duration of works: September 2020 – April 2023

Type of works: Construction and installation works on infrastructural and on-site surface facilities at the Semakovskoye Gas Field

Project description:

I. Infrastructural facilities

• Export gas pipeline DN1000, PN7,4 MPa – 121.9 km
• Treatment facility startup unit on export gas pipeline – 1 unit
• Block valve station on export gas pipeline – 3 units
• Entry checkpoint – 1 checkpoint
• Block valve station DN1000, PN7.4 MPa with double-sided purging– 2 units
• Safety valve KC DN1000, PN7.4 MPa without purging – 1 unit
• Pig receiver DN1000, PN7.4 MPa – 1 unit
• Safety block valve No. 8 of the group of gas wells No.1
• Intra-field gas pipelines from groups of gas wells
• Safety block valve No. 3 of the group of gas wells №2
• GMS (gas measuring station) – 1 station
• Block valve for connection No. 121 – 4 pcs
• Block valve No.123.1 DN1000, PN7.4 MPa without purging – 1 pc.
• Off-site and on-site utilities – 1 unit

II. On-site facilities

• Gas treatment unit, capacity 7.5 bln m3 /year
• Booster compressor station
• Captive power plant
• Production support base
• Wastewater treatment facility (WWTF)
• Absorption well site
• Rotator’s camp for 200 people with a canteen and a gym
• Water intake facilities
• Helicopter landing site
• Interim wastes accumulation site

SK RusWelding LLC — Contractor

Duration of works: April 2022 — April 2023

Type of works: Construction, installation and commissioning works to equip the site with technical security equipment set (TSES)

Project description: installation of the technical security equipment set (TSES) with subsequent commissioning on 57 sites of the Semakovskoye gas field, including on 8 warehousing facilities, a camp, and an export gas pipeline.

SK RusWelding LLC — Contractor

Duration of works: 15 November 2022 — 15 May 2023

Types of works: Construction and maintenance of winter road cluster No. 441-r of the Yamburgskoye Gas Field – Gas treatment unit of the Semakovskoye Gas Field

Project description: SK RusWelding LLC built 78.3 km of the winter road, including river ice crossings, and has been maintaining the said road in 2022-2023.

SK RusWelding LLC — Contractor

Duration of works: 1 September 2022 — 31 December 2023

Type of works: Provision of services by specialised vehicles and trucks for the maintenance and servicing of vehicle roads, bridge structures and on-site facilities of the Semakovskoye gas field

Project description: SK RusWelding LLC has been maintaining about 18 km of vehicle roads, bridge structures and almost 90,000 sq. m. of the on-site facilities of the Semakovskoye gas field performing the comprehensive set of works necessary to maintain the facilities in good condition.

SK RusWelding LLC — Contractor

Duration of works: 31 January 2023 — 13 June 2026

Type of works: Site preparation works “Semakovskoye gas field development. Phase 1. Stage 3. Groups of gas wells 1.2. Expansion”.

Project description: Construction and installation works for the site preparation of the cluster sites for the groups of gas wells of the Semakovskoye field necessary to build new wells (~ 450 thousand m3) as a part of field expansion project, as well as their subsequent cluster sites reclamation.

SK RusWelding LLC — Contractor

Duration of works: 15 November 2021 — 15 May 2022

Type of works: Construction and maintenance of the winter road cluster No.441-r of the Yamburgskoe gas field – Gas treatment unit of the Semakovskoye field

Project description: SK RusWelding LLC built 78.3 km of the winter road, including river ice crossings, and maintained it during 2021 – 2022.