ENGLISH - Gassco

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Facts about gas Many terms and expressions are used for oil and gas. Petroleum is a collective designation for hydrocarbons, whether solid, liquid or gaseous. Gscm Giga standard cubic metres – one billion cubic metres of gas at 0.01325 bar and 15°C. CNG Compressed natural gas. LNG Liquefied natural gas, primarily methane, which has been converted to liquid by cooling to -163°C at atmospheric pressure. One tonne of LNG corresponds to roughly 1 400 scm of gas. LPG Liquefied petroleum gases. Consist primarily of propane and butanes. They are obtained at Kårstø through fractionation and cooling. Natural gas Petroleum components (fractions) which primarily comprise light hydrocarbons. These can be divided into dry gas and NGL (see below). Also known as sales gas, dry gas consists largely of methane but can often contain a certain proportion of ethane and small quantities of heavier hydrocarbons. Condensate Embraces the heavier fractions in natural gas, such as pentane, hexane and heptane. Condensate is liquid under atmospheric pressure and temperature. Naphtha (natural gasoline) A volatile condensate which contains less of the heaviest fractions. NGL Natural gas liquids. Comprise the heavier gases ethane, propane and butane as well as small amounts of pentane, hexane and heptane. ncm Normal cubic metre at a reference condition of 0°C and 1.01325 bar. oe Oil equivalent. Oil and gas are often quantified as oil equivalent. As a rule of thumb, one tonne oe = one tonne of oil = 1 100 scm of sales gas. smc Standard cubic metre at a reference condition of 15°C and 1.01325 bar.
dId YOU KNOW THAT... When you clean your teeth in the morning, the brush you use is likely to be processed natural gas. And if you eat a gourmet meal in a Parisian or London restaurant, the chances are good that the food has been cooked on Norwegian gas. A number of well-known products which surround us, such as plastic bags and bottles, mobile phones and computers, derive from natural gas – one of the most iportant feedstocks for plastics production. COMPOSITION Of vArIOUS GAS TYPES rich gas Rich gas/ condensate dry gas (Sales gas) LNG NGL LPG Condensate Gross calorific value (GCV) MJ/scm Methane 37.7 Ethane 66.0 Propane 94.0 Butanes 121.0 Naphta 150 + Condensate > 150 = heat Dry (sales) gas by pipeline to Europe GCV MJ/scm 43-46 39-40 38-40 90-100 abt 100 > 150 Methane Ethane Propane NGL is transported by ship Extraction plant Fractionation plant Butanes Naptha Condensate
Page 1 and 2: ENGLISH ASSCO
Page 3 and 4: Contents Accepting responsibility,
Page 5 and 6: Health, safety and the environment.
Page 7 and 8: Motorways for Norwegian gas We oper
Page 9 and 10: Operatives in the control room at B
Page 11 and 12: Gas administration System operation
Page 13 and 14: Kårstø’s key role Kårstø nort
Page 15 and 16: Kollsnes Troll contains the largest
Page 17 and 18: RICH GAS NGL Gas processing Rich ga
Page 19 and 20: 1 The dornum receiving terminal.
Page 21 and 22: Zeebrugge terminal The receiving te
Page 23 and 24: St fergus terminal This facility st
Page 25 and 26: Riser platforms - key hubs The Drau
Page 27: The transport system currently unde
Page 32: GASSCO AS P O Box 93, NO- 5501 Haug

ENGLISH - Gassco

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