Intelligent energy-saving method and device for drilling fluid wireless drilling instrument

Abstract

The invention discloses an intelligent energy-saving method and device for a drilling fluid wireless drilling instrument. The intelligent energy-saving device comprises a rotating speed detection module, wherein the rotating speed detection module is mounted in the drilling fluid wireless drilling instrument, is used for detecting the rotating speed of a drilling rod of the drilling fluid wirelessdrilling instrument, and comprises a three-axis magnetic azimuth sensor, a three-axis acceleration sensor and an MCU; the MCU is in communication with a main MCU in the wireless drilling instrument through a 485 or CAN bus; the rotating speed detection module transmits the detected rotating speed of the drilling rod of the drilling fluid wireless drilling instrument to the main MCU; the main MCUjudges the working mode of the drilling fluid wireless drilling instrument; when the drilling fluid wireless drilling instrument is detected to be in a composite drilling mode, the main MCU keeps supplying power to the rotating speed detection sensor, the MCU and a control circuit and stops supplying power to other parts of the wireless drilling instrument; and when the instrument exits from the composite drilling mode, the main MCU supplies power to the drilling fluid wireless drilling instrument again and enters a normal working state.

Description

technical field [0001] The invention belongs to the technical field of control, and in particular relates to an intelligent energy-saving method and device for a drilling fluid wireless drilling tool. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] The drilling of directional wells (inclined or horizontal wells) in oil fields mainly relies on the guidance of drilling fluid wireless drilling tools, which are mainly powered by batteries. [0004] At present, there are three disadvantages in this method: first, the working time of the battery is short (150-300 hours), and the replacement of the battery requires tripping out, which takes a long time and costs a lot (one tripping out at 2,000 meters costs 50,000-60,000 yuan), and the efficiency Low. [0005] The 2nd, downhole instrument invalid power supply time is long, and life is short. ...

AI Technical Summary

Problems solved by technology

[0004] At present, there are three disadvantages in this method: first, the working time of the battery is short (150-300 hours), and the replacement of the battery requires tripping out, which takes a long time and costs a lot (one tripping out at 2,000 meters costs 50,000-60,000 yuan), and the efficiency Low

[0005] Second, the invalid power supply time of downhole instruments is long and the service life is short

[0006] Due to the very harsh downhole temperature, pressure, vibration and other environments, the power-on life of downhole instruments is limited (usually within 5000 hours), so invalid power supply will not only waste electric energy, but also greatly shorten the life of the instrument

[0007] The third is to affect the work of the mud pump

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