Petroleum expansion casing pipe buckling joint

The utility model discloses a petroleum expansion casing pipe buckling joint which comprises a pipe body and a casing pipe joint arranged at one end of the pipe body, and further comprises a positioning assembly which is arranged at the end of the pipe body and used for centering positioning in the buckling process of two adjacent expansion casing pipes, and the positioning assembly comprises a square groove formed in the end of the pipe body. The square groove is connected with a transmission plate through a connecting assembly, the end of the transmission plate is provided with an inclined face, and one side of the transmission plate is provided with a sliding assembly for assisting opposite buckling after positioning. According to the petroleum expansion casing buckling connector, in the buckling connection process of adjacent petroleum expansion casings, the casing connector and the casing body are centered and positioned through the positioning assembly, the casing connector and the casing body are assis