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Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2014
Property, Plant and Equipment  
Major Components of Property, Plant and Equipment

 

 

                                                                                                                                                                                   

 

 

December 31,

 

 

 

2014

 

2013

 

 

 

(In thousands)

 

Land

 

$
63,311

 

$
63,733

 

Buildings

 

 
165,826

 

 
163,962

 

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

 

 
12,792,207

 

 
12,818,136

 

Marine transportation and supply vessels

 

 
14,123

 

 
14,062

 

Oilfield hauling and mobile equipment

 

 
1,398,032

 

 
1,322,798

 

Other machinery and equipment

 

 
185,663

 

 
168,465

 

Oil and gas properties

 

 
26,579

 

 

—

 

Construction-in-process(1)

 

 
781,374

 

 
693,475

 

​

​

​  

​  

​

​  

​  

​

 

 

$
15,427,115

 

$
15,244,631

 

Less: accumulated depreciation and amortization

 

 
(6,827,990

)

 
(6,646,818

)

​

​

​  

​  

​

​  

​  

​

 

 

$
8,599,125

 

$
8,597,813

 

​

​

​  

​  

​

​  

​  

​

(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, 2014 or 2013.