Organic　rich　dark　shale　of　Q　Formation　can　be　found　in　many　areas　(e.g.,　in　the　North　of　S　Basin).　The　shale　target　stratum　is　easy　to　hydrate　and　often　undergoes　spallation.　Therefore,　centering　the　casing　in　the　horizontal　section　of　the　irregular　borehole　is　relatively　difficult.　Similarly,　achieving　a　good　cement　flushing　efficiency　under　complex　borehole　conditions　is　a　complex　task.　Through　technologies　such　as　centralizer,　efficient　preflushing,　multi-stage　flushing　and　ductile　cement　slurry,　better　performances　can　be　achieved.　In　this　study,　it　is　shown　that　the　cementing　rate　in　the　DY2H　horizontal　section　is　97.8%,　which　is　more　than　34%　higher　than　that　of　adjacent　wells.　This　cementing　matching　technology　for　sidetracking　horizontal　wells　can　be　used　to　improve　the　cementing　quality　of　continental　shale　and　provides　a　reference　for　future　applications　in　this　field.　©　This　work　is　licensed　under　a　Creative　Commons　Attribution　4.0　International　License,　which　permits　unrestricted　use,　distribution,　and　reproduction　in　any　medium,　provided　the　original　work　is　properly　cited.