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Definitions

For the purpose of this document the following definitions apply:


€	Euro
$	US Dollars
£	UK Pounds Sterling
bbls	Barrels
bcf	Billion cubic feet
bcfd	Billion cubic feet per day
bcm	Billion cubic metres
bcma	Billion cubic metres per annum
bcpd	Barrels of condensate per day
BG Group	BG Group plc and its subsidiary undertakings, joint ventures or associated undertakings
billion or bn	One thousand million
boe	Barrels of oil equivalent
boed	Barrels of oil equivalent per day
bopd	Barrels of oil per day
bpd	Barrels per day
Btu	British thermal units
CAGR	Compound Average Growth Rate
CCGT	Combined Cycle Gas Turbine
CIF	Carriage, insurance and freight
CNG	Compressed Natural Gas
cm	Cubic metre
DCQ	Daily Contracted Quantity
EPC	Engineering Procurement Construction
FEED	Front End Engineering Design
FOB	Free on board
FPSO	Floating production and storage offloading vessel
GSA	Gas Sales Agreement
GW	Gigawatts
GWh	Gigawatt hours
HIIP	Hydrocarbons Initially In Place
HPHT	High-Pressure High-Temperature
IFRIC	International Financial Reporting Interpretations Committee
kboed	Thousand barrels of oil equivalent per day
km	Kilometres
LPG	Liquefied petroleum gas
mmbbls	Million barrels
mmboe	Million barrels of oil equivalent
mmbopd	Million barrels of oil per day
mmbtu	Million British thermal units
mmbtud	Million British thermal units per day
mmcm	Million cubic metres
mmcmd	Million cubic metres per day
mmscm	Million standard cubic metres
mmscmd	Million standard cubic metres per day
mmscf	Million standard cubic feet
mmscfd	Million standard cubic feet per day
MoA	Memorandum of Agreement
MoU	Memorandum of Understanding
mtpa	Million tonnes per annum
MW	Megawatt
MWh	Megawatt hours
MWth	Megawatt thermal
NGL	Natural Gas Liquids
NGV	Natural Gas Vehicle
P10	At least a 10% probability that the quantities actually recovered will equal or exceed the high estimate
P90	At least a 90% probability that the quantities actually recovered will equal or exceed the low estimate
partner	An entity with whom BG Group has formed an incorporated or unincorporated association or joint venture for the purposes of pursuing its business activities and the term "partner" in this context is not intended to, nor shall be deemed to, create or constitute a partnership between BG Group and any such entity for the purposes of the Partnership Act 1890 or any similar law in any jurisdiction in which such activities may be conducted
PJ	Petajoules
PPA	Power Purchasing Agreement
PSC/PSA	Production Sharing Contract/Production Sharing Agreement
SPA	Sale and Purchase Agreement
sq km	Square kilometres
tcf	Trillion cubic feet

Reserves and resources

Proved reserves

BG Group utilises the SEC definition of proved reserves. Further information on proved reserves can be found in BG Group’s Annual Report and Accounts 2010.

Probable reserves

BG Group adopted the SEC definition of probable reserves in 2009. Further information on probable reserves can be found in BG Group’s Annual Report and Accounts 2010.

Discovered resources

Discovered resources are defined by BG Group as the best estimate of recoverable hydrocarbons where commercial and/or technical maturity is such that project sanction is not expected within the next three years.

Risked exploration

Risked exploration resources are defined by BG Group as the best estimate (mean value) of recoverable hydrocarbons in a prospect multiplied by the "chance of success".

The term "gross reserves" means gross proved reserves plus gross probable reserves.

For details of BG Group’s Reserves and Resources as at 31 December 2010, see chart here.

Data Book 2011