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

A wireless while drilling and energy-saving device technology, applied in the field of control, can solve the problems of long ineffective power supply time of downhole instruments, affecting the work of mud pumps, and limited power-on life of downhole instruments, so as to reduce ineffective power-on time and ineffective working time , Increase the effect of effective working time

Pending Publication Date: 2020-12-22
JINAN NEW GIGANANO LONG DISTANCE MEASURING & CONTROL
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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

Method used

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

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Embodiment 1

[0025] See attached figure 1 As shown, this embodiment discloses an intelligent energy-saving device for a drilling fluid wireless MWD, including a rotational speed detection module, and the rotational speed detection module is installed inside the drilling fluid wireless MWD for detecting Drill pipe speed, including three-axis magnetic azimuth sensor, three-axis acceleration sensor, MCU, MCU establishes communication with the main MCU in wireless MWD through 485 or CAN bus; among them, the speed sensor measures magnetic azimuth and gravity acceleration , can calculate the magnetic force and gravity tool surface, and then calculate the rotation speed, magnetic azimuth and gravity acceleration according to the magnetic force and gravity tool surface, and can directly measure internally without any relationship with the outside.

[0026] The rotational speed detection module transmits the detected drill pipe rotational speed of the drilling fluid wireless MWD to the main MCU, an...

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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. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B45/00E21B47/022E21B47/18
CPCE21B45/00E21B47/022E21B47/18
Inventor 卢祥明余民
Owner JINAN NEW GIGANANO LONG DISTANCE MEASURING & CONTROL
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