Annual Report 2002
Overview
Chairman's
statement Centrica
at a glance Chief
executive's review Operating
and financial review Group
financial review Corporate
responsibility Board
of directors Directors'
report Remuneration
report Directors’
responsibilities Independent
auditors' report Financial
statements
Notes
Gas
and liquids reserves
Five
year summary
Information
for shareholders
Key
performance indicators
Summary report
Chairman's
statement Centrica
at a glance Chief
executive's review Operating
and financial review Group
financial review Corporate
responsibility Board
of directors Directors'
report Remuneration
report Directors’
responsibilities Independent
auditors' report Financial
statements
Notes
Gas
and liquids reserves
Five
year summary
Information
for shareholders
Key
performance indicators
Summary report
Gas and liquids reserves
The group has estimated proven and probable gas reserves in the UK and North America and estimated proven and probable liquid reserves in the UK. Estimates are made by management.
The principal fields in the UK are South Morecambe, North Morecambe, Galleon and Armada. The principal fields in North America are Medicine Hat and Entice.
| Estimated net proven and probable reserves of gas (billion cubic feet) | UK | North America | Total |
|---|---|---|---|
| 1 January 2002 (as restated)(i) | 2,786 | 446 | 3,232 |
| Revisions of previous estimates | (14) | (6) | (20) |
| Purchases of reserves in place | 134 | 1 | 135 |
| Production | (399) | (37) | (436) |
| Sales of reserves in place | (65) | – | (65) |
| 31 December 2002 | 2,442 | 404 | 2,846 |
| (i) Estimated net proven and probable reserves of gas at
1 January 2002 have been restated to include non-producing assets which
were previously excluded. The impact of the restatement is to increase
net proven and probable gas reserves in the UK
by 55 billion cubic feet. |
|||
| Estimated net proven and probable reserves of liquids (million barrels) | UK | North America | Total |
|---|---|---|---|
| 1 January 2002 | 9 | 4 | 13 |
| Revisions of previous estimates | 2 | – | 2 |
| Purchases of reserves in place | 1 | – | 1 |
| Production | (2) | – | (2) |
| Sales of reserves in place | (7) | – | (7) |
| 31 December 2002 | 3 | 4 | 7 |
Liquid reserves includes condensate, propane, butane and oil.
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© Centrica 2003 Disclaimer Annual Report published 25 March 2003