The utility model discloses a nonstandard 365.13 mm buttress thread sleeve pipe connector which is designed for the connecting needs of sleeve pipe engineering. The nonstandard 365.13 mm buttress thread sleeve pipe connector is composed of a sleeve pipe external thread connector and a sleeve pipe coupling, wherein the sleeve pipe external thread connector is provided with a nonstandard external thread large end diameter, an incomplete external thread length, a complete external thread length, a total end point length from pipe ends to external threads, an external thread intermediate diameter and the like, and the sleeve pipe coupling is provided with a nonstandard outer diameter, a coupling minimum length, a bored hole diameter, bearing surface width and the like. The sleeve pipe external thread connector and the sleeve pipe coupling are provided with screw pitches, thread heights, thread guiding surface thread angles and thread bearing surface thread angles, wherein the screw pitches, the thread heights, the thread guiding surface thread angles and the thread bearing surface thread angles fit with the standards of an API, an SPEC and a 5B. The nonstandard 365.13 mm buttress thread sleeve pipe connector has the advantages of being reasonable in design, convenient to use and maintain, capable of satisfying site working conditions and the like. The nonstandard 365.13 mm buttress thread sleeve pipe connector can be used for a nonstandard sleeve pipe with the outer diameter of 365.13 mm and accessories.