December 31,

 

 

    

2016

    

2015

 

 

 

(In thousands)

 

Land

 

$

46,319

 

$

19,757

 

Buildings

 

 

115,502

 

 

126,285

 

Drilling, workover and well-servicing rigs, and related equipment

 

 

12,638,749

 

 

12,243,811

 

Marine transportation and supply vessels

 

 

 —

 

 

10,271

 

Oilfield hauling and mobile equipment

 

 

274,137

 

 

286,838

 

Other machinery and equipment

 

 

181,069

 

 

175,687

 

Oil and gas properties

 

 

12,286

 

 

16,386

 

Construction-in-process (1)

 

 

288,673

 

 

457,422

 

 

 

$

13,556,735

 

$

13,336,457

 

Less: accumulated depreciation and amortization

 

 

(7,289,152)

 

 

(6,308,655)

 

 

 

$

6,267,583

 

$

7,027,802

 


(1)

Relates primarily to amounts capitalized for new or substantially new drilling rigs and related equipment that were under construction and had not yet been placed in service as of December 31, 2016 or 2015.