This project will define appropriate cost-effective systems for testing deepwater reservoirs to avoid the use of expensive production and storage facilities or Mobile Offshore Drilling Units (MODUs). It will build a database on deepwater GOM reservoirs, the tests to be conducted, equipment for testing, and provide software written specifically to assess alternative equipment and estimate costs for conducting specific tests. The project team will review eight alternative approaches, determine their Technology Readiness Levels (TRLs), identify technology gaps, and prepare a conceptual design for a practical, effective, low cost system. The team will also evaluate the various GOM deepwater reservoirs to identify well testing facilities capabilities required to achieve a successful reservoir tests.