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Home Storage Services - Transparency Template

UGS Strachocina

The Underground Gas Storage [UGS] Facility Strachocina is located in Podkarpackie Voivodeship, in the territory of Brzozów and Sanok communes in the Sanok district. The facility is situated in the southern part of the Dynów Piedmont, bordering directly on the Jasielsko-Sanockie Pits in the south. Both units belong to the Carpathian region.

Information about the storage facility

First year of UGS operation: 1982

Working volume	460	[million m³]	5 211,8	[GWh]
Maximum injection capacity	2,64	[million m³/day]	29,7	[GWh/day]
Maximum withdrawal capacity	3,36¹⁾	[million m³/day]	37,9	[GWh/day]

¹⁾ Due to limitations on the part of the interconnected transmission system, the maximum gas withdrawal capacity from the UGS has been reduced from 3.84 million m³/day to 3.36 million m³/day.

Information about the storage facility

Key parameters of the storage reservoir:

Average effective thickness of reservoir rock	117,2	[m]
Average geophysical porosity of reservoir rock	10,60	[%]
Average geophysical permeability of reservoir rock	21,70	[mD]
Original static bottom-hole pressure in the reservoir horizon	10,05	[MPa]
Average depth of the reservoir horizon top	847	[m]

The Strachocina high-methane gas deposit was discovered in 1928. The natural gas in place reserves were assessed to amount to 4.25 billion m³. The production began in 1928 and continued until 1982. The ultimate depletion rate was 92.5%. The natural gas reservoir was formed within the Istebna sandstones of the Silesian Unit. The gas saturated zone overlays low-mobility edge/underlying formation water. From the top, the reservoir horizon is sealed by Paleocene shales, and from the base by Cretaceous Istebna shales.

Geological section

przekroj-strachocina