Oil and gas activities, investments, Q2 2013

Accrued investment costs. Extraction of crude petroleum and natural gas and transport via pipelines, by cost category. NOK million
	2009	2010	2011	2012
Total	135 825	125 421	146 290	172 465
Total extraction of crude petroleum and natural gas	135 298	124 868	145 820	172 128
Exploration and concept studies	27 889	25 493	27 399	26 990
Field development	36 581	30 352	37 475	51 984
Commodities	19 089	12 475	21 161	24 367
Services	9 190	7 187	8 077	15 941
Production drilling	8 302	10 690	8 237	11 676
Fields on stream	63 569	62 235	75 513	89 024
Commodities	5 793	4 797	5 294	8 602
Services	25 520	24 273	30 928	36 552
Production drilling	32 256	33 165	39 291	43 870
Onshore activities	7 259	6 788	5 434	4 130
Transport via pipelines	528	552	469	337

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