In　order　to　demonstrate　the　safety　of　the　multi-well　mining　method,　stratum　deformation　using　multi-well　systems　is　discussed.　Firstly,　ultrasonic　experiments　and　triaxial　tests　of　hydrate-bearing　sediments　under　different　confining　pressure　and　hydrate　saturation　conditions　were　carried　out.　The　soil　static　elastic　modulus　was　compared　with　the　dynamic　elastic　modulus　relationship.　Then　the　dynamic　elastic　modulus　relations　were　applied　to　the　multi-field　coupling　model　to　simulate　the　hydrate　mining　process　in　reservoirs　by　multi-well　strategies.　The　experimental　results　show　that　hydrate　saturation　impacts　the　elastic　modulus　more　than　the　effective　confining　pressure.　In　the　simulation　results,　with　the　increase　of　the　reservoir　depth,　the　soil　settlement　shows　a　trend　from　small　to　large　and　then　to　small.　The　maximum　soil　displacement　is　located　at　the　junction　between　the　hydrate　and　the　overlying　layers,　regarded　as　the　weak　point.　In　addition,　increasing　the　well　branches,　expanding　the　well　spacing,　and　increasing　the　wellhead　radius　can　increase　gas　production.　However,　at　the　same　time,　it　will　also　increase　the　reservoir　deformation,　thus　posing　risks　to　the　stability　of　the　formation　and　extraction　wells.　On　this　basis,　the　efficiency-safety　factor　was　set,　and　the　best　mining　scheme　was　determined.　©　2024　Elsevier　B.V.