Wide-adaptive novel automatic driller

Abstract

The invention relates to a wide-adaptive novel automatic driller, which comprises an actuating mechanism, a variable-frequency motor and a frequency convertor. The actuating mechanism is driven by a winch; the winch is connected to the variable-frequency motor through a reduction gearbox and a clutch; the frequency convertor is connected to the variable-frequency motor; a three-phase power is communicated with the frequency convertor; a suspending weight sensor is arranged on the actuating mechanism and inputs the detected data into a programmable logic controller (PLC); and the programmable logic controller (PLC) is communicated with the frequency convertor and a touch screen used as a human-computer interface. The programmable logic controller comprises a drilling pressure calculation module, a PID module and a fuzzy setting module. The wide-adaptive novel automatic driller aims at the characteristics of the control targets of automatic drilling, reduces the interference degree of a driller on a PID control system, introduces a fuzzy control algorithm to set the parameters of the PID system and achieves the purpose of optimal setting of the parameters of the PID control system.

Description

technical field [0001] The invention belongs to oil drilling equipment, in particular to a new type of automatic drilling device for oil drilling rigs with wide adaptability. Background technique [0002] At present, the oil drilling field is still dominated by manual drilling. Compared with manual drilling, automatic drilling can greatly reduce the labor intensity of the driller, improve drilling efficiency and drilling quality, and reduce damage to equipment. [0003] There are three main types of automatic drilling systems in the prior art: [0004] The first type automatically feeds the drill through the band brake. The U.S. has just begun to develop the automatic drilling device that is used for band brake in 1966, mainly contains " bear brand " and " 6-13 " type automatic drilling device. Its working principle is as follows: During the drilling process, the variation of drilling pressure is converted into a hydraulic signal and transmitted to the sensor after passing...

AI Technical Summary

Problems solved by technology

However, due to the complexity of the underground stratum, the controlled object of the automatic drill feeding has the characteristics of time delay, time variation, and nonlinearity, and there are deformations and time delays in the wire rope, between the hook and the drill pipe, and inside the transmission gear of the execution system. or nonlinear and other complex phenomena, it is impossible to obtain an accurate mathematical model of the system, so the application of the automatic drill feeding system has not been very ideal in the past

On the other hand, due to formation changes, the parameters of the automatic drilling system need to be adjusted continuously. Currently, such adjustments are mostly carried out manually by drillers, because there is no fixed adjustment algorithm, and different drillers have different adjustment habits. , so the adjustment of the parameters of the on-site automatic drilling system is very random, and the optimal parameter configuration cannot be guaranteed

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