Open sliding sleeve with large nominal diameter for horizontal well fracturing completion and integrated string thereof

The utility model relates to an open sliding sleeve with large nominal diameter for horizontal well fracturing completion and an integrated string thereof, which comprise a horizontal fracturing string, a hanging string and a circulating valve. The horizontal fracturing string consists of a plurality of fracturing strings fixedly connected by a connecting sleeve and includes an open hole packer and an open sliding sleeve, wherein the open hole packer is detachably connected with the open sliding sleeve by the aid of a connecting sleeve. The hanging string includes a hanger and a connecting string, wherein one end of the connecting string is detachably connected with the hanger, and the other end of the connecting string is detachably connected with the open hole packer in the horizontal fracturing string. The circulating valve is detachably connected with the open sliding sleeve in the horizontal fracturing string by the aid of a connecting sleeve. The open sliding sleeve is provided with the non-clogging string with the large nominal diameter, so that the technical problem that an existing string for horizontal well fracturing completion is limited by the structure of the open sliding sleeve in fracturing and difficult in multi-section fracturing is solved, and the shortcoming of difficulty in sand washing and testing after fracturing is overcome.