Property, Plant, and Equipment Table |
A summary of the historical cost of property, plant, and equipment is as follows: | | | | | | | | | | | | | | | | | | | | | | | | | December 31, | thousands | | Estimated Useful Life | | 2020 | | 2019 | | | | | | | | Land | | N/A | | $ | 9,696 | | | $ | 9,495 | | Gathering systems – pipelines | | 30 years | | 5,231,212 | | | 5,092,004 | | Gathering systems – compressors | | 15 years | | 2,096,905 | | | 1,929,377 | | Processing complexes and treating facilities | | 25 years | | 3,424,368 | | | 3,237,801 | | Transportation pipeline and equipment | | 6 to 45 years | | 168,205 | | | 173,572 | | Produced-water disposal systems | | 20 years | | 831,719 | | | 754,774 | | Assets under construction | | N/A | | 176,834 | | | 486,584 | | Other | | 3 to 40 years | | 702,806 | | | 672,064 | | Total property, plant, and equipment | | | | 12,641,745 | | | 12,355,671 | | Less accumulated depreciation | | | | 3,931,800 | | | 3,290,740 | | Net property, plant, and equipment | | | | $ | 8,709,945 | | | $ | 9,064,931 | |
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