This art creates an Advanced Annular Closing Device (AACD) that corrects significant environmental operational failure modes of the existing/in-use annular closing devices. The art further develops a Mini-AACD that significantly reduces the size of the annular closing mechanism providing improved operational reliability and lower cost. The Mini-AACD is incorporated in a unique Transitory Blowout Controller (TBC) assembly installed within the drilling return/riser pipe providing enhanced and redundant blowout annular closing protection (to the existing BOP).As options the art further incorporates additional supporting devices to the AACD, Mini-AACD and/or Seabed Drilling Equipment using simplistic and reliable alternative technology that provides redundancy to the overall existing/in-use BOP providing significantly more reliable means to close a well.