Gaviota Storage Facility Is Located in the Bay of Biscay, 8 Km

The natural gas chain Impreso en papel ecológico y libre de cloro. More than 90 years of underground storage facilities

Natural gas’s long journey from the gas elds to the end consumer The Gaviota storage facility is located in the Bay of Biscay, 8 Km. oﬀ Cape Matxitxako, north east of Bermeo (Biscay).

Extraction NG transport The storage facility is in a depleted gas eld covering The Gaviota storage facility is accessed from a platform 2 The gas is extracted from the The natural gas (NG) is transported a surface area of 64 km . It is located at a depth of anchored to the seabed with 20 pylons and connected gas elds using drilling wells and through gas pipelines 2,150 m in fractured limestone from the Upper by a gas pipeline to an onshore processing plant. extraction pipes Cretaceous.

Liquefaction The NG is liqueﬁ ed (LNG) to reduce its volume and make it easier to transport Gaviota Platform

Gas processing plant LNG transportation The liquid natural gas Bermeo is transported in methane tankers to regasi cation plants Bilbao

Regasi cation The liquid gas is returned to its original gaseous state in regasi cation plants

NG transport Distribution to Natural gas is transported end consumers through the high-pressure network

Gaviota

Bilbao A system that copies nature Underground storage Serrablo Gaviota Castor Yela

Gas has been stored naturally for millions Marismas of years. Palancares Underground natural gas Poseidón This process has been copied in Gaviota, with a depleted gas eld being used as an storage facility underground storage facility. main storage facilities in Europe A safe and environmentally-friendly facility Enagás, S.A. storage facilities in operation that ful ls a number of critical functions for Paseo de los Olmos, 19 • 28005 Madrid • +34 902 443 700 Located in waters o the coast of Biscay, Gaviota is one of two underground the Gas System: smoothing out di erences natural gas storage facilities operating in Spain. Enagás is currently working storage facilities under development between summer and winter demand, Gaviota storage facility on expanding this facility. retaining a cushion of strategic reserves, Ctra. Bakio - Bermeo, km 33,8 • 48370 Bermeo (Biscay) • +34 946 187 070 and, in short, contributing to guarantee the There are 627 underground natural gas storage facilities worldwide, supply of natural gas. www.enagas.es including one under Berlin’s city centre. The ﬁ rst dates from 1915.

cuadriptico enagas_ingles.indd 1 13/12/10 10:52:19 The natural gas chain Impreso en papel ecológico y libre de cloro. More than 90 years of underground storage facilities The natural gas chain Impreso en papel ecológico y libre de cloro. More than 90 years of underground storage facilities

Natural gas’s long journey from the gas elds to the end consumer The Gaviota storage facility is located in the Bay of Biscay, 8 Km. oﬀ Cape Matxitxako, Natural gas’s long journey from the gas elds to the end consumer The Gaviota storage facility is located in the Bay of Biscay, 8 Km. oﬀ Cape Matxitxako, north east of Bermeo (Biscay). north east of Bermeo (Biscay). The storage facility is in a depleted gas eld covering The Gaviota storage facility is accessed from a platform Extraction NG transport Extraction NG transport The storage facility is in a depleted gas eld covering The Gaviota storage facility is accessed from a platform a surface area of 64 km2. It is located at a depth of anchored to the seabed with 20 pylons and connected 2 The gas is extracted from the The natural gas (NG) is transported The gas is extracted from the The natural gas (NG) is transported a surface area of 64 km . It is located at a depth of anchored to the seabed with 20 pylons and connected gas elds using drilling wells and through gas pipelines 2,150 m in fractured limestone from the Upper by a gas pipeline to an onshore processing plant. gas elds using drilling wells and through gas pipelines 2,150 m in fractured limestone from the Upper by a gas pipeline to an onshore processing plant. extraction pipes Cretaceous. extraction pipes Cretaceous.

Liquefaction Liquefaction The NG is liqueﬁ ed (LNG) to The NG is liqueﬁ ed (LNG) to reduce its volume and make it reduce its volume and make it easier to transport easier to transport Gaviota Gaviota Platform Platform

Gas processing plant Gas processing plant LNG transportation LNG transportation The liquid natural gas Bermeo The liquid natural gas Bermeo is transported in methane is transported in methane tankers to regasi cation tankers to regasi cation plants plants Bilbao Bilbao

Regasi cation Regasi cation The liquid gas is returned The liquid gas is returned to its original gaseous to its original gaseous state in regasi cation state in regasi cation plants plants

NG transport Distribution to NG transport Distribution to Natural gas is transported end consumers Natural gas is transported end consumers through the high-pressure through the high-pressure network network

Gaviota Gaviota

Bilbao Bilbao A system that copies nature Underground storage Serrablo A system that copies nature Underground storage Serrablo Gaviota Castor Gaviota Castor Yela Yela

Gas has been stored naturally for millions Marismas Gas has been stored naturally for millions Marismas of years. Underground natural gas Palancares of years. Palancares Poseidón Underground natural gas Poseidón This process has been copied in Gaviota, This process has been copied in Gaviota, with a depleted gas eld being used as an storage facility with a depleted gas eld being used as an storage facility underground storage facility. underground storage facility. main storage facilities in Europe main storage facilities in Europe A safe and environmentally-friendly facility Enagás, S.A. A safe and environmentally-friendly facility storage facilities in operation Enagás, S.A. storage facilities in operation that ful ls a number of critical functions for Paseo de los Olmos, 19 • 28005 Madrid • +34 902 443 700 Located in waters o the coast of Biscay, Gaviota is one of two underground that ful ls a number of critical functions for Located in waters o the coast of Biscay, Gaviota is one of two underground storage facilities under development Paseo de los Olmos, 19 • 28005 Madrid • +34 902 443 700 the Gas System: smoothing out di erences natural gas storage facilities operating in Spain. Enagás is currently working the Gas System: smoothing out di erences natural gas storage facilities operating in Spain. Enagás is currently working storage facilities under development between summer and winter demand, Gaviota storage facility between summer and winter demand, Gaviota storage facility retaining a cushion of strategic reserves, on expanding this facility. on expanding this facility. Ctra. Bakio - Bermeo, km 33,8 • 48370 Bermeo (Biscay) • +34 946 187 070 retaining a cushion of strategic reserves, Ctra. Bakio - Bermeo, km 33,8 • 48370 Bermeo (Biscay) • +34 946 187 070 and, in short, contributing to guarantee the There are 627 underground natural gas storage facilities worldwide, and, in short, contributing to guarantee the There are 627 underground natural gas storage facilities worldwide, supply of natural gas. supply of natural gas. www.enagas.es including one under Berlin’s city centre. The ﬁ rst dates from 1915. www.enagas.es including one under Berlin’s city centre. The ﬁ rst dates from 1915.

cuadriptico enagas_ingles.indd 1 13/12/10 10:52:19 cuadriptico enagas_ingles.indd 1 13/12/10 10:52:19 The Gaviota underground storage facility Gaviota expansion project Spain imports practically all the gas it consumes, Increasing and its storage capacity is limited; approximately storage capacity 10% of that of neighbouring European states. New storage facilities are required for the future. Gas processing plant Under the name ALGA 1600, be laid for natural gas extraction Gaviota platform is a key factor for Enagás is constantly investigating all possibilities Distributed at various levels, this facility has the this project aims to expand and injection, and four new wells Comprises a tubular steel support structure designed to Gaviota’s useful gas capacity for underground natural gas storage in Spain. gas processing and compression equipment will be drilled. guaranteeing withstand the weight of a superstructure comprising: the to 1,600 m3; double its needed to perform two main processes at 8 km The existing onshore gas processing di erent times of the year: drilling, compression and processing facilities, personnel current volume. Gas pipeline to the and compression system will be supply distribution network quarters, helipad, and other installations. To achieve this objective expanded, while the Bermeo-Lemona · Injection of natural gas into the underground and to boost the nominal natural storage facility. Approximately between April and gas pipeline will be duplicated. October (period of lowest demand) gas extraction and injection flows, the project requires the The Gaviota expansion project has Natural gas from the basic gas pipeline network Cape Matxitxako a budget of €700 million and will is compressed in the plant to a pressure of 70 construction of new facilities bar. It is then transported through an undersea and several modifications lead to the creation of new jobs gas pipeline to the Gaviota platform. There, it is to existing installations. A new and will generally revitalise the compressed to a pressure of between 150 and 20” undersea gas pipeline will local economy. 180 bar, and then injected into the underground storage facility through wells.

105 m · Output of natural gas from the underground Gaviota post-expansion storage facility to the basic gas pipeline network. Approximately between November and March (period of peak demand) Useful gas volume will double from 3 3 The amount of gas to be extracted depends 779 MNm to 1,600 MNm . on market demand. Due to the pressure and 2.500 m temperature in the gas eld, extracted gas is Emission network capacity will rise from saturated with water and condensate (heavy 5.7 MNm3/day to 14.2 MNm3/day. hydrocarbons). The water and condensate is separated from the natural gas at the processing Capacity to inject into the storage facility will plant and the Gaviota platform, modifying the gas’s composition for injection into the network of gas Pipeline connecting the plant Gaviota Underground Storage increase from 4.5 MNm3/day to 9.6 MNm3/day. pipelines. and platform 16” undersea pipe, 7,996 m of which is submerged and 780 m on land. This pipe Injection/production wells transports the natural gas from the plant to the platform during injection periods. Five wells are used for injection and production During extraction periods, it is used to operations. A sixth well is used to re-inject water transport the gas and condensate in the produced during gas extraction back into the gas opposite direction. eld.

History of the storage facility

Enagás is the Technical System Operator for the gas system and leader in high-pressure transportation, regasi cation and storage of natural The company is a major As well as expanding these gas. It has almost 10,000 Km. of gas player in the Basque Country two facilities, Enagás is also 1976 1980 1982/83 1983 1984 1985 1986 1994 2010 2011 pipelines, three regasi cation plants after it acquired the Gaviota carrying out two major Vizcaya B and C First exploratory Feasibility studies Gaviota I and II Start of construction Commencement First commercial Gaviota opened as Enagás acquires Start of ALGA 1600 (Barcelona, Cartagena and Huelva) storage facility in 2010 and took projects: the El Musel coastal exploration survey and discovery con rming the operating of the platform and of drilling output of gas underground storage Gaviota extension project and two underground storage a 40% stake in the regasi cation regasiﬁ cation plant in Gijón, permits awarded of the Gaviota possibility of concessions onshore installations. of rst well facility after production natural gas eld commercial awarded Laying on the ceases and necessary facilities (Gaviota in Biscay and plant of Bahía Biscay Gas (BBG) and the Yela underground exploitation until 2013 pipelines joining the adaptation is complete Serrablo in Huesca). in the same year. storage facility in Guadalajara. two facilities

cuadriptico enagas_ingles.indd 2 13/12/10 10:52:33 The Gaviota underground storage facility Gaviota expansion project Spain imports practically all the gas it consumes, Increasing and its storage capacity is limited; approximately storage capacity 10% of that of neighbouring European states. New storage facilities are required for the future. Gas processing plant Under the name ALGA 1600, be laid for natural gas extraction Gaviota platform is a key factor for Enagás is constantly investigating all possibilities Distributed at various levels, this facility has the this project aims to expand and injection, and four new wells Comprises a tubular steel support structure designed to Gaviota’s useful gas capacity for underground natural gas storage in Spain. gas processing and compression equipment will be drilled. guaranteeing withstand the weight of a superstructure comprising: the to 1,600 m3; double its needed to perform two main processes at 8 km The existing onshore gas processing di erent times of the year: drilling, compression and processing facilities, personnel current volume. Gas pipeline to the and compression system will be supply distribution network quarters, helipad, and other installations. To achieve this objective expanded, while the Bermeo-Lemona · Injection of natural gas into the underground and to boost the nominal natural storage facility. Approximately between April and gas pipeline will be duplicated. October (period of lowest demand) gas extraction and injection flows, the project requires the The Gaviota expansion project has Natural gas from the basic gas pipeline network Cape Matxitxako a budget of €700 million and will is compressed in the plant to a pressure of 70 construction of new facilities bar. It is then transported through an undersea and several modifications lead to the creation of new jobs gas pipeline to the Gaviota platform. There, it is to existing installations. A new and will generally revitalise the compressed to a pressure of between 150 and 20” undersea gas pipeline will local economy. 180 bar, and then injected into the underground storage facility through wells.