Downhole equipment power supply system and power supply method based on geothermal energy-vibration energy

Abstract

The invention discloses an underground equipment power supply system based on geothermal energy and vibration energy as well as a power supply method thereof. The system comprises a vibration energy power generation device, a geothermal energy power generation device, an electric energy storage device and a power source monitoring management device, wherein the output ends of the vibration energy power generation device and the geothermal energy power generation device are connected with two energy storage input ends of the electric energy storage device; the electric energy storage device is bidirectionally connected with the power source monitoring management device; the output end of the electric energy storage device is connected with underground equipment. The technical scheme that geothermal energy is combined with piezoelectric vibration energy is adopted, an effective passage is developed for utilizing the energy sources during the drilling process, and sustainable utilization of clean energy sources is established; the problem of energy shortage is solved, the requirement for underground equipment power supply is met, and thus normal operation of a drilling parameter detection system can be guaranteed; the number of times for drilling caused by energy supply problem of the underground equipment is effectively reduced, the drilling efficiency is greatly improved, and the drilling cost is reduced.

Description

technical field [0001] The invention relates to a power supply system for downhole equipment based on geothermal energy-vibration energy and a power supply method thereof. Background technique [0002] In order to ensure the safety of drilling production, there are many parameters that need to be monitored during the drilling process, and many sensors are required. However, the energy supply of sensors is mainly powered by batteries at present. The battery-powered mode makes the work of the sensor subject to the life of the battery, and it is extremely inconvenient to replace the battery in deep or ultra-deep well drilling. At the same time, the price of batteries is also very expensive, which virtually increases the cost of drilling. [0003] At present, most of the downhole equipment is powered by chemical batteries, which have a short service life and are difficult to replace and expensive. Commonly used batteries are lithium batteries, which have relatively high specif...

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a power supply system for downhole equipment based on geothermal energy-vibration energy and its power supply method, and solve the problems of high price, short service life and difficult replacement of existing power supply methods

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