Downhole drill gesture measuring instrument and measuring method thereof

Abstract

The invention provides a downhole drill gesture measuring instrument and a measuring method thereof. The measuring instrument is fixed on a track of a drill propeller and comprises a power supply circuit module, a inertia measuring system and a control display part; the inertia measuring system comprises a tri-axial fiber optic gyroscope, a tri-axial accelerometer, a DSP (digital signal processor), an FPGA (field programmable gate array) acquisition circuit and the like; and the control display part comprises an STM32 controller, a displayer and the like. According the measuring method, the STM32 controller sends measurement point position information and a north-finding instruction to the FPGA acquisition circuit, the tri-axial fiber optic gyroscope and the tri-axial accelerometer start working, the angular velocity of sensitive rotational motion and the accelerated velocity of translational motion are subjected to gesture resolving in the DSP, and the gesture of a drill is obtained; and then, the inertia measuring system measures the current gesture of the drill all the time in real time until the measurement ends. According to the downhole drill gesture measuring instrument and the measuring method thereof, downhole drill gesture information can be automatically, rapidly and accurately measured and displayed only by only the device itself without outside information.

Description

technical field [0001] The invention relates to a technique for attitude measurement of an underground drilling rig, in particular to a device and method for automatically measuring the attitude (azimuth and elevation) information of an underground drilling rig without external information, and can also be used to measure the attitude information of other underground equipment. Background technique [0002] For gas mines, gas must be extracted before coal mining. This requires the construction of a large number of gas drainage holes underground, and in order to ensure a high gas drainage rate, the construction drilling rig is required to perform drilling operations according to the pre-designed azimuth and elevation angles. In this way, the attitude information of the drilling rig must be measured to ensure that the attitude of the drilling rig is finally adjusted to the pre-designed azimuth and pitch angles. At present, the determination of the azimuth and pitch angle of t...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of manual measurement methods, the present invention provides a downhole drilling rig attitude measuring instrument and its measurement method. The downhole drilling rig attitude measuring instrument adopts the inertial technology widely used in aerospace, and its characteristic is The instrument itself can automatically measure the initial azimuth and pitch angle of the drilling rig, and can dynamically measure the real-time azimuth and pitch angle of the drilling rig when the attitude of the drilling rig is adjusted

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