250.467—How long must I keep records?
You must keep records for the time periods shown in the following table.
| You must keep records relating to | Until |
|---|---|
| (a) Drilling | Ninety days after you complete drilling operations. |
| (b) Casing and liner pressure tests, diverter tests, and BOP tests | Two years after the completion of drilling operations. |
| (c) Completion of a well or of any workover activity that materially alters the completion configuration or affects a hydrocarbon-bearing zone | You permanently plug and abandon the well or until you forward the records with a lease assignment. |