Blowout preventer for downhole operation in gas field development

The utility model discloses a blowout preventer for gas field development downhole operation, which comprises a shell, two partition plates are symmetrically welded on the inner side wall of the shell, a pipe body is welded on the inner side wall of the shell and positioned between the two partition plates, two box bodies are symmetrically welded on the inner side wall of the shell, and the two box bodies are welded on the inner side wall of the shell. Hydraulic rods are installed on the inner side walls of the two box bodies, one end of a fourth rod body penetrates through the inner side wall of a partition plate and is welded with a first gate plate, a threaded rod is driven by rotating a handle to push second gate plates to move, the two second gate plates are attached to each other and then block oil, then the first gate plates are pushed by starting the hydraulic rods, and the hydraulic rods are started to drive the second gate plates to move. According to the device, the mode that closing is driven elec