Intangible assets, net

Year ended December 31, 2017	Information system projects			Licenses, patents and trademarks (*)			Goodwill			Customer relationships			Total

Cost
Values at the beginning of the year		554,330			461,619			2,090,257			2,058,946			5,165,152
Translation differences		6,265			483			(184	)		(87	)		6,477
Additions		28,335			5,105			-			-			33,440
Transfers / Reclassifications		(28,371	)		(92	)		-			-			(28,463	)
Increase due to business combinations (**)		133			-			-			-			133
Disposals		-			(1,152	)		-			-			(1,152	)
Values at the end of the year		560,692			465,963			2,090,073			2,058,859			5,175,587

Amortization
Accumulated at the beginning of the year		408,373			362,292			797,592			1,734,068			3,302,325
Translation differences		5,232			-			-			-			5,232
Amortization charge		65,249			10,546			-			131,376			207,171
Transfers / Reclassifications		92			(92	)		-			-			-
Accumulated at the end of the year		478,946			372,746			797,592			1,865,444			3,514,728
At December 31, 2017		81,746			93,217			1,292,481			193,415			1,660,859

Year ended December 31, 2016	Information system projects			Licenses, patents and trademarks (*)			Goodwill			Customer relationships			Total
Cost
Values at the beginning of the year		524,869			494,662			2,170,709			2,059,946			5,250,186
Translation differences		2,264			(29	)		4,671			-			6,906
Additions		28,730			648			-			-			29,378
Transfers / Reclassifications		(546	)		(222	)		-			-			(768	)
Transfer to assets held for sale		(836	)		(32,600	)		(85,123	)		(1,000	)		(119,559	)
Disposals		(151	)		(840	)		-			-			(991	)
Values at the end of the year		554,330			461,619			2,090,257			2,058,946			5,165,152

Amortization
Accumulated at the beginning of the year		335,532			364,412			836,939			1,569,851			3,106,734
Translation differences		1,325			-			-			-			1,325
Amortization charge		72,632			30,633			-			165,217			268,482
Transfers / Reclassifications		(245	)		(153	)		-			-			(398	)
Transfer to assets held for sale		(718	)		(32,600	)		(39,347	)		(1,000	)		(73,665	)
Disposals		(153	)		-			-			-			(153	)
Accumulated at the end of the year		408,373			362,292			797,592			1,734,068			3,302,325
At December 31, 2016		145,957			99,327			1,292,665			324,878			1,862,827

(*) Includes Proprietary Technology.

(**) Related to Garrett LLC acquisition.

The geographical allocation of goodwill for the year ended

December 31, 2017

was

$1,168.5

million for North America,

$121.2

million for South America,

$2.0

million for Europe and

$0.7

million for Middle East & Africa.

The carrying amount of goodwill allocated by CGU, as of

December 31, 2017,

was as follows:

(All amounts in million US dollar)
As of December 31, 2017	Tubes Segment						Other Segment
CGU	Maverick Acquisition		Hydril Acquisition		Other		Maverick Acquisition		Total
OCTG (USA)		225		-		-		-		225
Tamsa (Hydril and other)		-		346		19		-		365
Siderca (Hydril and other)		-		265		93		-		358
Hydril		-		309		-		-		309
Coiled Tubing		-		-		-		4		4
Confab		-		-		28		-		28
Other		-		-		3		-		3
Total		225		920		143		4		1,292