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See acronyms used in our reporting below or download the full glossary of terms in this PDF
ADR American depositary receipt.
ADS American depositary share. 1 ADS = 6 ordinary shares.
Barrel (bbl)
159 litres, 42 US gallons.
bcf/d Billion cubic feet per day.
bcfe Billion cubic feet equivalent.
bcma Billion cubic metres per annum.
b/d Barrels per day.
Barrels of oil equivalent per day.
FPSO Floating production, storage and offloading.
GAAP Generally accepted accounting practice.   
Gas Natural gas.
Grams of carbon dioxide equivalent per megajoule of energy.
GHG  Greenhouse gas. 
GRI Global Reporting Initiative.
GtCO2 Gigatonnes of carbon dioxide.
GWh  Gigawatt hour.  
HSSE Health, safety, security and environment.
IFRS International Financial Reporting Standards. 
KPIs  Key performance indicators. 
LNG Liquefied natural gas. 
LPG Liquefied petroleum gas.
mb/d  Thousand barrels per day. 
mboe/d Thousand barrels of oil equivalent per day.
mmb/d or Mb/d Million barrels per day. 
mmboe/d Million barrels of oil equivalent per day. 
mmBtu Million British thermal units. 
Million cubic feet per day. 
mmte or Mte Million tonnes.
MteCO2 Million tonnes of CO2 equivalent.
MW Megawatt. 
NGLs Natural gas liquids. 
PSA Production-sharing agreement. 
PTA Purified terephthalic acid.
RC  Replacement cost.
RMM  Refining marker margin.
SEC  The United States Securities and Exchange Commission. 
WTI  West Texas Intermediate.