You need to raise a non-tech SR and get the download link for old Weblogic Installers.
" As of December 4, 2012, the BEA Release Archive has been decommissioned. Customers looking for a BEA release that is not available on the Oracle Software Delivery Cloud, or OTN, please refer to MOS Document 1071023.1 'Requesting Physical Shipment or Download URL for Software Media'. "
Requesting Physical Shipment or Download URL for Software Media (Doc ID 1071023.1)
This precisely answers my question. Thank you.