Vertical drilling process deviation correction control method based on automatic guiding drilling tool

Abstract

The invention provides a vertical drilling process deviation correction control method based on an automatic guiding drilling tool. The vertical drilling process deviation correction control method includes the following steps that first, a two-dimensional model and a three-dimensional model of the drilling tool movement are established; then, linearizing and discretizing of the models are conducted, and a deviation correction controller is designed; the hole deviation angle deviation amount, the azimuth deviation amount, the closure distance deviation amount, a reference drilling tool facingangle and the reference guiding rate are input to the deviation correction controller; a servo drive module drives a bit to drill vertically; an initial hole deviation angle, azimuth angle, and closure distance are calculated; a final hole deviation angle, azimuth angle, and closure distance are calculated; the deviation amount of the hole deviation angle, the azimuth angle, and the closure distance is calculated; and the deviation amount is fed back to the deviation correction controller to form closed-loop control. According to the technical scheme, the vertical drilling process deviation correction control method has the beneficial effects that in the case of lack of an existing vertical drilling deviation correction control concept, two-dimensional and three-dimensional modeling of thedrilling tool movement is carried out, the deviation correction controller is designed, and the vertical accuracy of a vertical drilling trajectory and engineering applicability of a deviation correction control system can be improved.

Description

technical field [0001] The invention relates to the field of advanced drilling control, in particular to a deflection correction control method in a vertical drilling process based on an automatic steering drilling tool. Background technique [0002] The economic development of a country is inseparable from the supply of mineral resources. In recent years, the rapid development of China's economy has led to a rapid increase in the mining of mineral energy. With the continuous mining of mineral resources, my country's shallow and open-pit mineral resources are becoming increasingly exhausted. However, the current information shows that there are huge potential mineral resources in the deep part of the mainland of my country. The coal resources buried below 1000 meters account for 53%, of which lignite and low metamorphic bituminous coal account for 55%. my country's deep oil resources account for about 40% of the remaining oil resources, and deep natural gas resources accoun...

AI Technical Summary

Problems solved by technology

The deviation correction control system based on traditional technology often only focuses on the control of well deviation angle, relying on passive anti-deviation technology and manual experience to control well deviation

However, although this deflection correction control system can ensure that the general trend of downward drilling remains unchanged, the drilling trajectory cannot be effectively adjusted to the predetermined vertical trajectory, so that the position of the drill bit may deviate farther and farther from the vertical horizontal distance. , or spiral downward around the plumb line, especially when drilling in complex formations, the uncertain factors increase sharply, making it difficult to guarantee the vertical accuracy of the drilling trajectory, which seriously affects the drilling quality

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