Property, Plant and Equipment

12 Months Ended

Dec. 31, 2015

Note 8 Property, Plant and Equipment

The major components of our property, plant and equipment are as follows:

	December 31,
	2015			2014
	(In thousands)
Land	$	19,757		$	63,311
Buildings	126,285			165,826
Drilling, workover and well-servicing rigs, and related equipment	12,243,811			12,792,207
Marine transportation and supply vessels	10,271			14,123
Oilfield hauling and mobile equipment	286,838			1,398,032
Other machinery and equipment	175,687			185,663
Oil and gas properties	16,386			26,579
Construction-in-process (1)	457,422			781,374

	$	13,336,457		$	15,427,115
Less: accumulated depreciation and amortization	(6,308,655		)	(6,827,990		)

	$	7,027,802		$	8,599,125

(1)

Relates primarily to amounts capitalized for new or substantially new drilling, workover and well-servicing rigs that were under construction and had not yet been placed in service as of December 31, 2015 or 2014.

Repair and maintenance expense included in direct costs in our consolidated statements of income (loss) totaled $304.7 million, $603.4 million and $510.8 million during 2015, 2014 and 2013, respectively.

Interest costs of $20.4 million, $24.4 million and $13.0 million were capitalized during 2015, 2014 and 2013, respectively.