It　is　expected　to　become　a　transformative　technology　for　the　efficient　development　and　utilization　of　offshore　heavy　oil　for　Supercritical　water　gasification　multi-element　thermal　fluid　thermal　recovery　method.　In　this　paper,　first,　a　supercritical　Multi-Component　Thermal　Fluid　(SCMCTF)　displacement　thermal　core　experimental　system　for　heavy　oil　was　developed,　and　then,　the　displacement　experiments　of　supercritical　multi-element　thermal　fluid　(SC-MCTF)　flooding,　traditional　Multi-Component　Thermal　Fluid　flooding,　supercritical　water(SCW)　flooding　and　highpressure　hot　water　(HW)flooding　were　carried　out,　and　different　injection　techniques　were　compared　and　studied,　and　analyzes　different　injection　conditions　oil　displacement　efficiency,　thermal　efficiency,　core　temperature　and　pressure　distribution　and　evolution　characteristics.　The　results　show　that　supercritical　Multi-Component　Thermal　Fluid(SC-MCTF)　flooding　has　the　multiple　characteristics　of　thermal　flooding,　gas　flooding　and　miscible　flooding,　significantly　improve　the　oil　displacement　efficiency,　oil　recovery　rate　and　thermal　efficiency,　moreover,it　can　suppress　the　steam　and　supercritical　water　override　phenomenon,　and　expand　the　scope　of　the　spread.　Compared　with　supercritical　water　flooding　(25　MPa,　400),　the　oil　displacement　efficiency　of　supercritical　Multi-　Component　Thermal　Fluid(SC-MCTF)　flooding　(25　MPa,　400)　is　as　high　as　95%,　and　the　oil　displacement　efficiency　is　increased　by　3%,　the　oil　recovery　rate　is　increased　by　47%,　and　the　thermal　efficiency　is　improved　16%.　©　2022,　Science　Press.　All　right　reserved.