Property, plant and equipment, net of accumulated depreciation, of the Company consists of the following as of the period end dates set forth below (in US$ thousands):

 

  

Estimated

Useful Lives

(in years)

  December 31,
2025
   December 31,
2024
 
Buildings and leasehold improvements  5 to 25  $56,937   $55,283 
Drilling rigs, plant and equipment  1 to 15   818,147    747,905 
Office equipment (furniture and fixtures) and tools  3 to 10   14,785    16,658 
Vehicles and cranes  5 to 10   9,364    9,713 
Less: Accumulated depreciation      (522,072)   (443,367)
Land      11,664    11,664 
Capital work in progress      76,629    40,290 
Total     $465,454   $438,146 

About PP&E Disclosures

The PP&E disclosure details a company's physical asset base — land, buildings, machinery, and equipment — along with the depreciation methods and useful life assumptions that determine how these costs flow through the income statement. Capitalization policy thresholds reveal management's judgment on the boundary between expense and asset, directly affecting both reported earnings and asset values.

Key signals: changes in estimated useful lives or depreciation methods can materially shift reported earnings without any operational change. Compare capital expenditures against depreciation expense — when capex consistently trails depreciation, the asset base may be aging and underinvested. Watch for large asset impairments or write-downs that signal overvalued carrying amounts. Asset retirement obligations reveal future environmental or decommissioning costs that are often underappreciated. Compare PP&E intensity (PP&E-to-revenue) against industry peers to assess capital efficiency and competitive positioning.