Butting auxiliary device used for horizontal well subsection gravel filling

The utility model provides a butting auxiliary device used for horizontal well subsection gravel filling. The butting auxiliary device comprises a butting tool and a butting service tool which are connected with each other. The butting tool comprises a first upper connector, a positioning barrel connected with the first upper connector and a guide barrel connected with the positioning barrel. The butting service tool comprises a second upper connector, a first connecting pipe connected with the second upper connector, a pawl spring seat, a pawl spring, a second connecting pipe, a clamping ring, a guide block and a lower connector, wherein the first connecting pipe is sleeved with the pawl spring seat, the pawl spring seat is sleeved with the pawl spring, the second connecting pipe is connected with the first connecting pipe, the second connecting pipe is sleeved with the clamping ring, the guide block is connected with the clamping ring and is positioned by the clamping ring, and the lower connector is connec