| Property, Plant, and Equipment Table |
A summary of the historical cost of property, plant, and equipment is as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | thousands | | Estimated Useful Life | | March 31, 2024 | | December 31, 2023 | | Land | | N/A | | $ | 12,442 | | | $ | 12,504 | | | Gathering systems – pipelines | | 30 years | | 5,935,848 | | | 5,890,607 | | | Gathering systems – compressors | | 15 years | | 2,602,110 | | | 2,553,602 | | | Processing complexes and treating facilities | | 25 years | | 3,775,379 | | | 3,745,332 | | | Transportation pipeline and equipment | | 3 to 48 years | | 259,227 | | | 259,314 | | Produced-water disposal systems | | 20 years | | 1,103,001 | | | 1,098,616 | | | Assets under construction | | N/A | | 560,417 | | | 479,368 | | | Other | | 3 to 40 years | | 909,211 | | | 906,088 | | | Total property, plant, and equipment | | | | 15,157,635 | | | 14,945,431 | | | Less accumulated depreciation | | | | 5,432,343 | | | 5,290,415 | | | Net property, plant, and equipment | | | | $ | 9,725,292 | | | $ | 9,655,016 | |
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