Drilling parameter self-adaptive adjusting method and system

Abstract

The invention relates to a drilling parameter self-adaptive adjusting method and system, and belongs to the field of automatic control. The system comprises a drill jamming probability monitoring and adjusting system, a deslagging smoothness monitoring and adjusting system and an anchoring stability monitoring and adjusting system. The drilling tool jamming probability, the deslagging effect, the anchoring stability and the construction efficiency are comprehensively considered in drilling parameter adjustment, so that the effectiveness and safety of parameter adjustment can be effectively guaranteed, and it is guaranteed that a drilling machine works efficiently and stably. Critical values used for comparison are obtained through a large number of drilling tests and field data, so that the engineering practicability of the adjusting method is ensured, and the situation that adjusting rules are mismatched with field working conditions is avoided. Double-closed-loop control is performed on an executing mechanism and a hydraulic system, so that the monitoring effect is more comprehensive, and the adjusting precision is higher. An iterative optimization algorithm is used for replacing simple closed-loop adjustment, so that the calculation efficiency is higher.

Description

technical field [0001] The invention belongs to the field of automatic control, and relates to a drilling parameter adaptive adjustment method and system. Background technique [0002] Most of the drilling rigs currently in use are generally driven and controlled by full hydraulic pressure. The main pressure parameters are generally displayed by pressure gauges. traffic, etc.) to achieve. The parameter adjustment steps are as follows: first, the personnel observe the various pressures displayed by the operating system of the drilling rig, the drilling system of the drilling rig, and the slag return in the hole; then, judge whether the current rotation and propulsion speed are reasonable based on experience; Push control the pressure or flow of the corresponding valve to realize the adjustment of drilling parameters. [0003] In recent years, with the gradual popularization of automatic drilling rigs, the traditional manual parameter adjustment has been difficult to meet th...

AI Technical Summary

Problems solved by technology

[0009] 1. Solve the problem of poor adjustment effect caused by the single consideration of parameter adjustment and failure to comprehensively consider the stability of the drilling rig, the possibility of drill sticking and other factors;

[0010] 2. Solve the problem of artificial setting of theoretical contrast value and poor engineering practice

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