Thermal　stimulation　is　a　common　measure　used　to　improve　the　decomposition　efficiency　of　natural　gas　hydrate.　However,　the　conventional　thermal　stimulation　methods　require　considerable　investments　in　wellbore　con-struction.　According　to　the　penetration　mechanism　of　the　torpedo　anchor,　the　self-entry　energy　compensation　device　(ECD)　is　innovatively　proposed　to　replace　the　existing　wellbore　platform.　The　principle　and　critical　technologies　of　the　ECD　are　described　and　analyzed　in　detail.　Then,　a　penetration　model　and　an　exploitation　model　are　developed　using　the　reservoir　data　from　the　W17　station　in　the　Shenhu　sea　area,　and　the　main　con-clusions　are:　It　takes　about　4　s　for　the　ECD　to　penetrate　from　the　overburden　layer　to　the　reservoir,　and　its　penetration　depth　is　about　50.1-370.4　m,　which　covers　the　buried　depth　of　most　marine　reservoirs.　Nevertheless,　the　combined　depressurization　+　thermal　stimulation　method　is　unsuitable　for　the　Shenhu　reservoir　due　to　the　low　permeability,　low　thermal　conductivity,　and　high　initial　temperature.　Overall,　the　ECD　can　provide　a　new　idea　for　developing　the　NGH　thermal　stimulation　method　to　solve　the　Joule-Thomson　effect　and　seawater　freezing　problems　during　the　depressurization　production.