Wellhead automatic positioning method and system of plugging and perforating operation machine

A wellhead automatic positioning system of a plugging and perforating operation machine, comprising an initial module, an acquisition module, and a control module;

• wherein the initial module is configured to determine a wellhead position, and acquire standard positioning parameters of a boom according to the wellhead position and a tool string length, wherein the positioning parameters comprise a standard extension length L of the boom, a standard lifting length J, and a first included angle φ between a projection of the boom and a wellhead;
• the acquisition module is configured to acquire actual positioning parameters of the boom, wherein the actual positioning parameters comprise an actual length L′ of the boom, an actual lifting length J′, and an initial angle φ′ between the projection of the boom and the wellhead;
• and
• the control module is configured to extend and retract, lift and lower and rotate and adjust the boom according to the standard positioning parameters and the actual positioning parameters of the boom to complete the automatic positioning of the wellhead.