Offers for noncompetitive oil and gas leases under the Mineral Leasing Act of 1920 [
30 U.S.C.
181 et seq.] which were filed but which did not result in the issuance of a lease on or before December 18, 1971, on lands selected by, and conveyed before, on, or after December 2, 1980, to, Native Corporations or to individual Natives under paragraph (5) or (6) of section
14
(h) [
43 U.S.C.
1613
(h)(5) or (
6)] as part of the entitlement to receive land under the Alaska Native Claims Settlement Act [
43 U.S.C.
1601 et seq.] shall not constitute valid existing rights under section 14(g) of such Act [
43 U.S.C.
1613
(g)] or under this Act.