Severance O-1D changes O1d Reports now include “Initial Well Completion Date” for file uploads. The format is yyyymmdd.
O-1D File Upload Specification
Initial Well Completion Date – This is the date that the well is finished and ready for production; only wells newly completed on or after July 1, 2025 qualify for tax rate codes (1N, 1TN, 1PN, and HN). Recompleted wells do not qualify.

*If using tax rates 1N, 1PN, 1TN, or HN, the Initial Well Completion Date must be July 1, 2025 or later. If using tax rates 1, 1P, 1T, or H, the Initial Well Completion Date must not be later than June 30, 2025.