43 CFR § 3512.12
Is there a fee for requesting an assignment or sublease?
June 11, 2020
When you submit your instrument for assignment of record title or operating rights, or for transfer of overriding royalties, you must pay the filing fee for assignment, sublease, or transfer of operating rights found in the fee schedule in §3000.12 of this chapter. BLM will not accept any instrument without the filing fee.
[64 FR 53536, Oct. 1, 1999, as amended at 72 FR 50888, Sept. 5, 2007]