Exploration for evaluation of oil&gas resources

12 Months Ended

Dec. 31, 2019

34 Exploration for evaluation of oil&gas resources


(€ million)	2019	2018	2017
Revenues related to exploration activity and evaluation	34	17	9
Exploration activity and evaluation costs
- write-off of exploration and evaluation costs	214	93	252
- costs of geological and geophysical studies	275	287	273
Exploration expense for the year	489	380	525
Intangible assets: proved and unproved exploration licence and leasehold property acquisition costs	1,031	1,081	995
Tangible assets: capitalized exploration and evaluation costs	1,563	1,267	1,371
Total tangible and intangible assets	2,594	2,348	2,366
Provision for decommissioning related to exploration activity and evaluation	109	77	81
Exploration expenditure (net cash used in investing activivties)	586	463	442
Geological and geophysical costs (cash flow from operating activities)	275	287	273
Total exploration effort	861	750	715