Performing mechanism for automatic vertical drilling tool

Abstract

The invention discloses a performing mechanism for an automatic vertical drilling tool. The mechanism is that a slurry filtering mechanism, a liquid distributing mechanism and a thrust performing mechanism are respectively arranged on a mechanism body; the slurry filtering mechanism is used for filtering slurry entering a slurry branch runner to prevent the runner from being blocked; the liquid distributing mechanism is used for distributing the slurry flow according to a certain ratio in order to provide sufficient hydraulic pressure to push and prop a rectangular thrust plate through the slurry entering the slurry branch runner; a rectangular thrust plate of the thrust performing mechanism is pushed and propped to the side edge of the well wall under the effect of the slurry hydraulic pressure so as to apply a reverse acting force to the performing mechanism to generate an inclined lateral force to a drill bit, and as a result, the wellhead can be returned to be vertical to a track. The mechanism is simple in structure and reliable to work.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment and relates to an actuator of an automatic vertical drilling tool. Background technique [0002] The existing foreign vertical drilling tool systems are relatively mature and have a high degree of automation, but the solenoid valves, hydraulic pumps, hydraulic cylinders and other components in the actuator system of such tools are prone to wear and sticking, which can easily lead to drilling accidents . [0003] Most of the domestically developed actuators for vertical drilling tools use a static pushing action during drilling operations, and the actuators only use high-pressure hydraulic oil provided by hydraulic pumps to drive the plunger to act on the well wall to generate pushing force. However, the dynamic push-by type actuator is too simple, and the borehole wall is not regular and smooth enough, which will cause certain adverse effects on the tripping operation. [0004] Ther...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an actuator for an automatic vertical drilling tool, which solves the phenomenon that components such as solenoid valves, hydraulic pumps, and hydraulic cylinders in the prior art Chinese and foreign vertical drilling tool systems are prone to wear and sticking, etc. The problem of accidents; at the same time, it solves the problem that the actuator adopts the static pushing action mode and the simple dynamic pushing mode to make the drilled hole wall irregular and smooth.

Images