Expansion of the capacity of the Chiren underground gas storage facility

Contracting Authority

Location

Chiren, Vratsa municipality

Period of implementation

Glavbolgarstroy’s role in the project

Nature of works

The construction works on the expansion of the capacity of the Chiren underground gas storage facility are carried out in three separate projects:

• Above Ground Facilities: Construction and commissioning of new above-ground facilities to meet the demands for increased daily production and injection capacities, as well as to enhance the maximum working pressure at the Chiren underground gas storage facility. The project encompasses the establishment of a compressor station alongside all requisite technological infrastructures, such as individual separators, a gas filtration and drying system, and a gas measuring station. It also includes connections to the Vratsa 1 and Vratsa 2 gas pipelines, along with pipelines leading to existing wells.

• Gas Pipeline: Investment design, procurement of necessary materials and equipment, construction, and commissioning of a connecting gas pipeline between the Chiren underground gas storage facility and the existing gas transmission network operated by "Bulgartransgaz" in Butan village. The pipeline spans approximately 41.432 kilometers, designed to withstand a pressure of 75 bar, equipped with a pipe diameter of 711 mm.