Session 4: Gas statistics United Nations Statistics Division International Workshop on Energy...
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- Slide 1
- Session 4: Gas statistics United Nations Statistics Division
International Workshop on Energy Statistics 24-26 September 2012,
Beijing, China
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- World production (10 3 TJ)
- Slide 3
- SIEC 3: Natural gas Natural Gas A mixture of gaseous
hydrocarbons, primarily methane, but generally also including
ethane, propane and higher hydrocarbons in much smaller amounts and
some non combustible gases such as nitrogen and carbon dioxide. It
can be associated and non-associated It can be be converted to
liquid form for ease of storage or transport (Liquefied Natural Gas
LNG) by condensing it into a liquid at close to atmospheric
pressure by cooling it to approximately 162 C (260 F) LNG is
principally used for transporting natural gas to markets, where it
is regasified and distributed as pipeline natural gas Biogas and
manufactured gasses are excluded
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- Imports Stock changes Non energy use Final Energy Consumption
Manufacturing, const. and non-fuel industry Transport Other
(Agriculture, Households, etc.) Production Transformation Final
consumption Total energy supply Energy industry own use Losses
Exports Int. bunkers Extraction of non-associated gas Extraction of
associated gas Flaring Venting Re-injection
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- Measurement units Gaseous fuels are generally measured in
Volume (e.g. m3) and energy units (e.g. Joules) Volume measures
generally based on 2 reference conditions: Normal conditions:
measured at 0 Celsius and at a pressure of 760 mm Hg Standard
conditions: measured at 15 Celsius and at a pressure of 760 mm Hg
Recommended standard conditions
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- Data items They reflect data collected from statistical
units
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- UNSD Annual Questionnaire
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- Common problems Sometimes data are reported in tons. Hard to
make the conversion into Terajoules Calorific values when data are
reported in cubic metres Flaring and venting often not reported
Input into electricity and heat plants Energy use vs non-energy use
Transport
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- Thank you!