Property, plant and equipment as of September 30, 2025 and 2024 consisted of the following:
(in thousands)Estimated Useful LivesSeptember 30, 2025September 30, 2024
Drilling services equipment
2 - 15 years
$8,168,906 $6,671,975 
Tubulars
4 years
597,933 552,773 
Real estate properties
10 - 45 years
8,223 48,617 
Other
2 - 23 years
620,908 460,857 
Construction in progress1
182,942 106,183 
9,578,912 7,840,405 
Accumulated depreciation(5,265,838)(4,824,128)
Property, plant and equipment, net$4,313,074 $3,016,277 
Assets held-for-sale$15,231 $— 
(1)Included in construction in progress are costs for projects in progress to upgrade or refurbish certain rigs in our existing fleet. Additionally, we include other advances for capital maintenance purchase-orders that are open/in process. As these various projects are completed, the costs are then classified to their appropriate useful life category.

Historical Timeline

Fiscal YearFiled
2025Nov 21, 2025Showing above
2024Nov 13, 2024
2023Nov 8, 2023
2022Nov 17, 2022
2021Nov 18, 2021
2020Nov 20, 2020
2019Nov 15, 2019
2018Nov 16, 2018

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.