Multifunctional detection device while drilling and prediction method

Abstract

The invention discloses a multifunctional detection device while drilling and a preparation method. The device comprises a signal collection module, a signal preprocessing and analysis module, a transmission module and a ground processing and predicting module. Geological information is predicted through comparison of vibration acceleration information of a drill bit with instance data, and the size of a geological area is predicted according to duration time and speed; by means of measurement for temperature, humidity and geological information of the geological environment where the drill bit is located by a temperature and humidity sensor and an infrared sensor, the temperature, the humidity as well as size and position of the geological area are predicted according to the changes of the duration time and speed or position of the drill bit; and advantages of measurement orientation of a gyroscope and a magnetometer are complementary, an azimuth angle can be measured when the magnetic field is abnormal or gyroscope drifting is serious, and fault isolation is achieved. The multifunctional detection device while drilling has the advantages of small size, high vibration resistance, fault-tolerant capability and reliability as well as high-temperature resistance.

Description

technical field [0001] The invention relates to the field of drill bit information measurement and geological environment detection, in particular to the movement information of the drill bit and the geological environment detection of the drill bit. technical background [0002] In resource exploration and mining, it is necessary to detect the drill bit movement information and the geological environment of the drill bit, which is called detection while drilling, such as the detection of geological environment information such as gas, water and heat far away from the coal mine excavation face, including gas, water and The size and location of the thermal area, and make predictions to judge the possibility of gas explosions, water inrush, and high temperature disasters, so as to avoid disasters. [0003] The detection-while-drilling system includes a detection device and a prediction method. A general detection device includes a measurement module, a transmission module and...

AI Technical Summary

Problems solved by technology

The geological magnetic environment and the ground stress are erratic, and the measurement of the magnetometer and the strain gauge will be good and bad, so the measurement of the azimuth angle of the drill bit cannot be guaranteed; the change of the geological layer is measured by ultra-high frequency electromagnetic waves and sound waves, because the actual geological layer interface is not accurate. will be very clear, which may lead to large measurement errors; similarly, electromagnetic wave wireless or wired transmission will be interfered

The advantage of using a variety of sensors is that there is a lot of information. How to achieve complementary advantages requires signal fusion processing, but there will also be another problem-the more faults will occur. If a certain sensor is abnormal, how to achieve fault isolation and improve fault tolerance

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