Drilling test device for simulating complex working condition of small-caliber drilling hole bottom

Abstract

A drilling test device for simulating the complex working condition of a small-caliber drilled hole bottom comprises a drilling machine part, a drilling fluid manifold part, a drilling simulation part and a control part, the drilling machine part is provided with a motor, the motor is connected with a drilling rod through a transmission mechanism, and a sleeve is arranged outside the drilling rod; the upper end of a piston rod of the oil cylinder is in contact with the lower end of the drill rod through a force bearing assembly; the drill clamping mechanism is arranged in the middle of the sleeve and applies transverse force to the drill rod through the drill clamping oil cylinder; the drilling fluid manifold part is provided with a water tank, a drilling fluid input pipeline and a drilling fluid return pipeline; the control part is provided with a device comprehensive control box and a human-computer interface, and the device comprehensive control box is electrically connected with the human-computer interface. Various in-hole complex accidents encountered in the drilling process of the geological core drilling vertical shaft type core drilling machine can be simulated, real-time control over the drilling pressure and the drilling bit rotating speed in the drilling process can be achieved, and real-time monitoring over the drilling speed and the drilling footage is achieved. The simulation state is accurate and vivid, and the device is convenient to operate.

Description

technical field [0001] The invention relates to a test device, in particular to a drilling test device for simulating complex working conditions at the bottom of a small-caliber drilling hole, belonging to the technical field of drilling engineering. Background technique [0002] Compared with the scale of the core drilling rig market and the huge number of employees at this stage, there are insufficient professional and technical personnel who can skillfully operate the drilling rig, which has affected the efficient, safe and rapid development of the core drilling rig market. As the depth of core drilling continues to increase, higher requirements are placed on the technical level of drilling personnel, especially the team leader who operates the drilling rig: it is necessary to make accurate judgments on the complex situations in the hole that occur during the drilling process and be able to handle them correctly. And when the equipment fails, it can be quickly repaired on...

AI Technical Summary

Problems solved by technology

If the accidents in the hole are not handled properly, it will cause more complicated accidents in the hole or lead to the scrapping of the drilling hole, which will seriously affect the drilling progress and greatly increase the drilling cost.

The existing technology lacks a test device for simulating complex working conditions at the bottom of the drilling hole, so it is difficult for operators to improve their operating level through the test device

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