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Minami-Nagaoka Gas Field and Domestic Natural Gas Business

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Domestic Natural Gas Overview
Producing: Total oil and gas fields
(FY 2012 average)
Natural gas: Approx. 134 MMcf
Crude oil and condensate: Approx. 4 Mbbld
Natural gas sales (FY 2012) Approx. 1.75 billion m³

Discovered in 1979 and in production since 1984, Minami-Nagaoka is one of the largest gas fields in Japan. After processing, the natural gas is transported through a 1,400km trunk pipeline network stretching across the Kanto and Koshinetsu regions that surround the greater Tokyo metropolitan area and delivered to city gas companies and industrial customers along this network.

INPEX has experienced substantial sales growth in recent years due to sharp rises in the prices of competing fuels, as well as the highly environmentally friendly attributes of natural gas. The target is for medium- to long-term annual sales of 2.5billion m³ by the early 2020s and in the 3.0 billion m³ range over the long term, reflecting further capacity increases for our core Shin Tokyo Line and developmentof the Toyama Line (extending from Itoigawa City, Niigata Prefecture, to Toyama City, Toyama Prefecture), construction of which began in April 2012.

In order to support this growth, supply capacity and reliability have been enhanced through the introduction of LNG from Shizuoka Gas Co., Ltd., in 2010. INPEX decided to build an LNG terminal at Naoetsu, Joetsu City, in Niigata Prefecture, which is slated to start in the beginning of 2014.

At the Naruto Gas Field in Chiba Prefecture, natural gas dissolved in water is being produced. Natural gas dissolved in water is contained in underground "brine water." We pump up the brine water, extract natural gas and supply the gas to surrounding areas. The brine water also contains high levels of iodine.We export the iodine to Europe, the United States and elsewhere.

Construction of Naoetsu LNG Terminal

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Construction of the Naoetsu LNG Terminal
Location: 12 Yachiho, Joetsu City, Niigata Prefecture
Lot area: Approx. 25 ha
Gas production capacity: 7.5 MM m³/d (LNG 240 tons/hour)
LNG tank: 180 thousand kl × 2
(upgrade possible)
LNG receiving capacity: Approx. 1.5 million tons/year
Operational start: 2013

We expect domestic demand for natural gas to rise steadily and continue to be firm due to factors such as the shift to natural gas from oil as consciousness about the environment and energy conservation increases, as well as rising oil prices. To ensure stable supply to the domestic natural gas market over the long term, INPEX has been engaged in constructing an LNG terminal in Joetsu City (the port of Naoetsu) in Niigata Prefecture since 2009. The operational startup is planned for the beginning of 2014. Afterward, we plan to receive LNG from our overseas projects at the Naoetsu terminal, and by combining that supply with existing domestic supplies from Minami-Nagaoka and other fields we will be able to enhance the capacity and stability of our supply structure.

Naoetsu LNG

Naoetsu LNG Terminal

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