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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment  
Property, Plant and Equipment

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Note 8 Property, Plant and Equipment

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

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December 31,

 

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2021

    

2020

 

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(In thousands)

 

Land

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$

22,955

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$

28,261

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Buildings

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130,917

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141,365

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Drilling rigs and related equipment

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11,702,450

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12,487,961

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Oilfield hauling and mobile equipment

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243,850

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259,150

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Other machinery and equipment

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200,740

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195,903

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$

12,300,912

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$

13,112,640

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Less: accumulated depreciation and amortization

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(8,968,414)

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(9,126,933)

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$

3,332,498

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$

3,985,707

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Depreciation expense included in depreciation and amortization expense in our consolidated statements of income (loss) totaled $689.2 million, $851.8 million and $869.6 million during 2021, 2020 and 2019, respectively.

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Repair and maintenance expense included in direct costs in our consolidated statements of income (loss) totaled $153.9 million, $154.2 million and $248.6 million during 2021, 2020 and 2019, respectively.

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Interest costs of $0.7 million, $0.7 million and $1.5 million were capitalized during 2021, 2020 and 2019, respectively.