|
Movements in net proved hydrocarbons reserves |
(mmboe) |
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
||
|
|
Italy (a) |
Rest of Europe |
North Africa |
Sub-Saharan |
Kazakhstan |
Rest of Asia |
America |
Australia |
Total |
||
|
2012 |
|
|
|
|
|
|
|
|
|
||
|
|||||||||||
|
Consolidated subsidiaries |
|
|
|
|
|
|
|
|
|
||
|
Reserves at December 31, 2011 |
707 |
630 |
2,031 |
1,021 |
950 |
230 |
238 |
133 |
5,940 |
||
|
of which: developed |
540 |
374 |
1,175 |
742 |
482 |
129 |
162 |
112 |
3,716 |
||
|
undeveloped |
167 |
256 |
856 |
279 |
468 |
101 |
76 |
21 |
2,224 |
||
|
Purchase of minerals in place |
|
|
|
|
|
|
|
|
|
||
|
Revisions of previous estimates |
24 |
20 |
67 |
82 |
91 |
(5) |
34 |
8 |
321 |
||
|
Improved recovery |
|
1 |
20 |
7 |
|
|
|
|
28 |
||
|
Extensions and discoveries |
4 |
6 |
10 |
86 |
85 |
|
9 |
|
200 |
||
|
Production |
(69) |
(66) |
(213) |
(126) |
(37) |
(41) |
(45) |
(13) |
(610) |
||
|
Sales of minerals in place |
(142) |
|
|
(22) |
(48) |
|
|
|
(212) |
||
|
Reserves at December 31, 2012 |
524 |
591 |
1,915 |
1,048 |
1,041 |
184 |
236 |
128 |
5,667 |
||
|
Equity-accounted entities |
|
|
|
|
|
|
|
|
|
||
|
Reserves at December 31, 2011 |
|
|
21 |
83 |
|
656 |
386 |
|
1,146 |
||
|
of which: developed |
|
|
19 |
4 |
|
5 |
26 |
|
54 |
||
|
undeveloped |
|
|
2 |
79 |
|
651 |
360 |
|
1,092 |
||
|
Purchase of minerals in place |
|
|
|
|
|
|
|
|
|
||
|
Revisions of previous estimates |
|
|
|
|
|
8 |
247 |
|
255 |
||
|
Improved recovery |
|
|
|
|
|
|
|
|
|
||
|
Extensions and discoveries |
|
|
1 |
3 |
|
10 |
135 |
|
149 |
||
|
Production |
|
|
(2) |
(1) |
|
(6) |
(4) |
|
(13) |
||
|
Sales of minerals in place |
|
|
|
(4) |
|
|
(34) |
|
(38) |
||
|
Reserves at December 31, 2012 |
|
|
20 |
81 |
|
668 |
730 |
|
1,499 |
||
|
Reserves at December 31, 2012 |
524 |
591 |
1,935 |
1,129 |
1,041 |
852 |
966 |
128 |
7,166 |
||
|
Developed |
406 |
349 |
1,100 |
716 |
458 |
190 |
190 |
107 |
3,516 |
||
|
consolidated subsidiaries |
406 |
349 |
1,080 |
716 |
458 |
108 |
170 |
107 |
3,394 |
||
|
equity-accounted entities |
|
|
20 |
|
|
82 |
20 |
|
122 |
||
|
Undeveloped |
118 |
242 |
835 |
413 |
583 |
662 |
776 |
21 |
3,650 |
||
|
consolidated subsidiaries |
118 |
242 |
835 |
332 |
583 |
76 |
66 |
21 |
2,273 |
||
|
equity-accounted entities |
|
|
|
81 |
|
586 |
710 |
|
1,377 |
||
