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Exploration and Production

Exploration and Production: Estimated net reserves of natural gas

The allocation of the countries within these areas is:
Atlantic Basin Canada, Egypt, Nigeria, Trinidad and Tobago and the USA
Asia and the Middle East Areas of Palestinian Authority, Australia, China, India, Kazakhstan, Oman and Thailand
Rest of the World Algeria, Bolivia, Brazil, Italy, Libya, Madagascar, Norway, Poland, Tanzania and Tunisia.

ESTIMATED NET PROVED RESERVES OF NATURAL GAS

  UK bcf Atlantic
Basin bcf		 Asia and
Middle East
bcf		 Rest of
World
bcf		 Total
bcf
As at 31 December 2007 1 024 4 562 2 381 1 229 9 196(1)
Movement during the year: – – – – –
Revisions of previous estimates(2) 174 59 947 57 1 237
Extensions, discoveries and reclassifications 4 – 183 102 289
Production (182) (486) (210) (87) (965)
Acquisitions of reserves-in-place – – 866 – 866
Disposals of reserves-in-place – – – –  
  (4) (427) 1 786 72 1 427
As at 31 December 2008 1 020 4 135 4 167 1 301 10 623(1)
Movement during the year: – – – – –
Revisions of previous estimates(2) 31 163 129 168 491
Extensions, discoveries and reclassifications 65 – – 474 539
Production (157) (535) (227) (91) (1 010)
Acquisitions of reserves-in-place – 567 – – 567
Disposals of reserves-in-place (29) – – – (29)
  (90) 195 (98) 551 558
As at 31 December 2009 930 4 330 4 069 1 852 11 181(1)
Movement during the year: – – – – –
Revisions of previous estimates(2) 30 (67) (159) 401 205
Extensions, discoveries and reclassifications 29 498 786 90 1 403
Production (127) (566) (229) (111) (1 033)
Acquisitions of reserves-in-place – 69 – – 69
Disposals of reserves-in-place – (27) (113) – (140)
  (68) (93) 285 380 504
As at 31 December 2010 862 4 237 4 354 2 232 11 685(1)
  • Note:  Conversion factor of 6 bcf of gas to 1 mmboe.
  • (1) Estimates of proved natural gas reserves at 31 December 2010 include fuel gas of 702 bcf (31 December 2009 655 bcf; 31 December 2008 668 bcf; 31 December 2007 632 bcf).
  • (2) Includes effect of oil and gas price changes on PSCs.

ESTIMATED NET PROVED DEVELOPED RESERVES OF NATURAL GAS

  UK bcf Atlantic
Basin bcf		 Asia and
Middle East
bcf		 Rest of
World
bcf		 Total
bcf
As at 31 December 2007 807 1 897 2 046 822 5 572
As at 31 December 2008 813 1 915 3 040 1 001 6 769
As at 31 December 2009 685 2 394 2 820 812 6 711
As at 31 December 2010 640 2 099 2 469 776 5 984

ESTIMATED NET PROBABLE RESERVES OF NATURAL GAS

  UK bcf Atlantic
Basin bcf		 Asia and
Middle East
bcf		 Rest of
World
bcf		 Total
bcf
Probable developed reserves of natural gas 264 881 21 296 1 462
Probable undeveloped reserves of natural gas 71 1 002 6 717 2 630 10 420
As at 31 December 2010 335 1 883 6 738 2 926 11 882(3)
  • (3)Estimates of probable natural gas reserves at 31 December 2010 include fuel gas of 934 bcf.

 

Exploration and Production: Estimated net reserves of oil

ESTIMATED NET PROVED RESERVES OF OIL

‘Oil’ includes crude oil, condensate and natural gas liquids.

  UK mmbbl Atlantic
Basin
mmbbl		 Asia and
Middle East
mmbbl		 Rest of
World
mmbbl		 Total
mmbbl
As at 31 December 2007 167.2 13.9 287.4 37.9 506.4
Movement during the year: – – – – –
Revisions of previous estimates(1) 22.0 1.2 189.9 3.2 216.3
Extensions, discoveries and reclassifications 0.4 – 6.0 24.9 31.3
Production (30.5) (2.3) (30.9) (2.2) (65.9)
Acquisitions of reserves-in-place – – – – –
Disposals of reserves-in-place – – – – –
  (8.1) (1.1) 165.0 25.9 181.7
As at 31 December 2008 159.1 12.8 452.4 63.8 688.1
Movement during the year: – – – – –
Revisions of previous estimates(1) 31.9 (0.1) (76.6) 102.0 57.2
Extensions, discoveries and reclassifications 3.1 – – 47.5 50.6
Production (29.4) (2.5) (31.8) (2.8) (66.5)
Acquisitions of reserves-in-place 7.0 – – – 7.0
Disposals of reserves-in-place – – – – –
  12.6 (2.6) (108.4) 146.7 48.3
As at 31 December 2009 171.7 10.2 344.0 210.5 736.4
Movement during the year: – – – – –
Revisions of previous estimates(1) (2.0) 0.6 7.1 235.3 241.0
Extensions, discoveries and reclassifications 9.6 0.9 – 21.3 31.8
Production (27.9) (2.0) (28.2) (5.4) (63.5)
Acquisitions of reserves-in-place – 0.2 – – 0.2
Disposals of reserves-in-place – (0.1) – – (0.1)
  (20.3) (0.4) (21.1) 251.2 209.4
As at 31 December 2010 151.4 9.8 322.9 461.7 945.8
  • (1) Includes effect of oil and gas price changes on Production Sharing Contracts.

ESTIMATED NET PROVED DEVELOPED RESERVES OF OIL

  UK mmbbl Atlantic
Basin
mmbbl		 Asia and
Middle East
mmbbl		 Rest of
World
mmbbl		 Total
mmbbl
As at 31 December 2007 138.9 9.0 223.5 21.5 392.9
As at 31 December 2008 125.7 7.7 373.8 25.5 532.7
As at 31 December 2009 135.5 5.8 285.3 20.5 447.1
As at 31 December 2010 113.6 5.7 277.5 27.8 424.6

ESTIMATED NET PROBABLE RESERVES OF OIL

  UK mmbbl Atlantic
Basin
mmbbl		 Asia and
Middle East
mmbbl		 Rest of
World
mmbbl		 Total
mmbbl
Probable developed reserves of oil 49.3 2.9 4.3 14.1 70.6
Probable undeveloped reserves of oil 20.6 1.0 99.6 1 650.4 1 771.6
As at 31 December 2010 69.9 3.9 103.9 1 664.5 1 842.2

Exploration and Production: Field interests

PRODUCING FIELDS

  Gas production(net) bcf   Oil and liquids
production(net)
‘000s barrels		   Total production(1)
(net) mmboe
  2010 2009 2008   2010 2009 2008   2010 2009 2008
Australia 46.0 34.2 5.2   30 60 10   7.7 5.8 0.9
Bolivia 31.7 23.4 28.4   1 010 800 930   6.3 4.7 5.6
Brazil – – –   1 590 710 –   1.6 0.7 –
Canada 3.2 10.0 0.5   20 – –   0.5 1.7 0.1
Egypt 317.4 338.7 332.0   1 160 1 640 1 870   54.1 58.1 57.2
India 47.4 54.9 66.0   3 250 4 530 4 460   11.1 13.7 15.4
Kazakhstan 87.0 94.4 89.6   23 310 25 720 24 840   37.8 41.4 39.8
Thailand 49.1 43.2 49.3   1 590 1 480 1 560   9.8 8.7 9.8
Trinidad and Tobago 177.1 174.9 153.7   690 770 450   30.2 29.9 26.1
Tunisia 79.5 67.9 58.1   2 750 1 330 1 310   16.0 12.6 11.0
UK 126.5 157.3 181.9   27 940 29 390 30 470   49.0 55.6 60.8
USA 68.7 11.6 –   120 40 –   11.6 2.0 –
Total(2) 1 033.6 1 010.5 964.7   63 460 66 470 65 900   235.7 234.9 226.7

OTHER FIELDS AND DISCOVERIES WITH PROVED OR PROBABLE RESERVES: BG GROUP WORKING INTEREST (%)

AS AT 31 DECEMBER 2010

Algeria Hassi Ba Hamou 65.00
  RM-1 65.00
Bolivia Itaú 25.00
Brazil Iara 25.00
Egypt WDDM near field satellites, Mina, Silva, Saurus 50.00
Norway Bream 40.00
  Knarr (formerly Jordbær) 45.00
  Gaupe (formerly Pi) 60.00
Thailand Bongkot South 22.22
Trinidad and Tobago Starfish 50.00
UK Jasmine 30.50
  • (1) Conversion rate of 6 bcf gas per mmboe.
  • (2) Production volume includes fuel gas.

Exploration and Production: Drilling activity

WELL OPERATIONS (3)

Number of exploration and appraisal wells 2010 2009 2008 2007 2006
Total 20 28 43 20 42
Percentage successful 63 61 51 67 56

WELLS DRILLED IN 2010: ANALYSIS BY COUNTRY(3)

        Exploration Appraisal
Algeria       2 –
Brazil       – 5
Canada       2 –
China       1 –
Norway       3 –
Oman       – 1
Tanzania       2 –
Thailand       3 –
UK       – 1
Total       13 7
  • (3)Excludes unconventional coal seam gas and shale gas wells.

Exploration and Production: Licence and block interests

HELD AT 31 AUGUST 2011

AMERICAS AND GLOBAL LNG

Country   Interest details Number
of blocks		 Type of
fields(1)		 BG Group-
operated		 BG Group
interest (%)
Bolivia   La Vertiente 1 Gas 1 100
    Caipipendi 1 Gas 0 37.5
    Block XX Tarija West 1 Gas 0 25
    Block XX Tarija East 1 Gas & Oil 1 100
    Charagua 1 Unknown 0 20
    Los Suris 1 Gas 1 100
Brazil   BM-S-9 1 Oil & Gas 0 30
    BM-S-10 1 Oil & Gas 0 25
    BM-S-11 1 Oil & Gas 0 25
    BM-S-50 1 Unknown 0 20
    BM-S-52 1 Gas & Condensate 1 40
Trinidad and Tobago   Block 5(a) 1 Various 1 50
    Block 6 1 Various 1(2) 50
    Block E 1 Gas 1 50
    Central Block 1 Various 1 65
    NCMA-1 1 Gas 1 57
    Block 5(c) 1 Various 0 75
United States Alaska Foothills & Eastern North Slope 316 Unknown 0 34
  Penn. & W. Virginia Marcellus Shale – Gas 0(3) 50
  Texas & Louisiana Haynesville Shale – Gas 0 50

EUROPE AND CENTRAL ASIA

Country Interest details Number
of blocks		 Type of
fields(1)		 BG Group-
operated		 BG Group
interest (%)
Italy Po Valley Permits (Italy Onshore) 1 Gas & Condensate 0 40
Kazakhstan Karachaganak 1 Various 1(4) 32.5
Norway Southern North Sea 12 Various & Unknown 4 Various
  North Tampen 6 Oil & Unknown 2 Various
  Mid-Norway 17 Gas & Unknown 3 Various
  Barents Sea 9 Gas & Unknown 1 Various
United Kingdom(5) Central North Sea c.70 Various & Unknown 36 Various
  Various Onshore PEDLs 31 Gas 0 Various

AFRICA, MIDDLE EAST AND ASIA

Country Interest details Number
of blocks		 Type of
fields(1)		 BG Group-
operated		 BG Group
interest (%)
Algeria Hassi Ba Hamou Perimeter(6) 4 Gas 4 36.75
  Guern El Guessa Perimeter 2 Unknown 2 49
Areas of Palestinian Authority Gaza Marine 1 Gas 1 90
China Block 53/16 1 Unknown 1 100
  Block 64/11 1 Gas 1 100
  Block 63/16 1 Unknown 1 100
Egypt Rosetta Concession(7) 4 Gas 4 80
  West Delta Deep Marine(8) 8 Gas 8 50
  El Manzala Offshore 1 Unknown 1 50
  El Burg Offshore 1 Unknown 1 70
  North Gamasa Offshore 1 Unknown 1 100
India(9) Mid and South Tapti 1 Gas & Condensate 1 30
  Panna/Mukta 2 Oil & Gas 2 30
  KG-OSN-2004/1 1 Unknown 0 45
  MN-DWN-2002/02 1 Unknown 0 25
  KG-DWN-2009/1 1 Unknown 1 30
Kenya L10A 1 Unknown 1 40
  L10B 1 Unknown 1 45
Madagascar Majunga Offshore Profonde 1 Unknown 0 30
Nigeria OPL 286-DO 1 Oil & Gas 1 66
  OPL 284-DO 1 Oil & Gas 0 45
Tanzania Block 1 1 Gas 0 60
  Block 3 1 Unknown 0 60
  Block 4 1 Gas 0 60
Thailand 3/2515/7 2 Various 0 22.22
  3/2549/71 1 Various 0 22.22
  4/2515/8(10) 3 Unknown 3 66.67
  5/2515/9 1 Various 0 22.22
Tunisia Amilcar 1 Unknown 1 50
  Miskar 1 Gas & Condensate 1 100
  Hasdrubal 1 Gas, Condensate & Oil 1 50

AUSTRALIA

Country   Interest details Number
of blocks		 Type of fields(1) BG Group-
operated		 BG Group
interest (%)
Australia   Walloons Fairway 54 Gas (CSG) 54 Various
    Other Surat Basin 6 Unknown 6 Various
    Bowen Basin 14 Unknown 11 Various
  • (1) The type of field is given as Various where it relates to oil and/or gas and/or condensate or Unknown where the interest is an exploration interest with no discovery.
  • (2) Block 6, Manatee operated by Chevron Trinidad and Tobago Resources SRL.
  • (3) Portions of interests in the Marcellus Shale are operated by an entity that is jointly held with EXCO Resources.
  • (4) Joint operator with Eni.
  • (5) Includes part blocks. Held as at May 2011.
  • (6) BG Group, GKP and Sonatrach continue to discuss revised equity interests.
  • (7) Rosetta Concession comprises four Development Leases (Rosetta Exploration Licence expired May 2003).
  • (8) West Delta Deep Marine Concession comprises eight Development Leases (WDDM Exploration Licence expired November 2006).
  • (9) Mid and South Tapti and Panna/Mukta are jointly operated with ONGC and Reliance Industries. KG-DWN-2009/1 is operated by BG Group. KG-OSN-2004/1 and MN-DWN-2002/02 are operated by ONGC.
  • (10) Area is subject to international boundary dispute – obligations under suspension pending resolution.
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