Drill pipe power generator for drilling

Abstract

The invention discloses a drill pipe power generator for drilling. The drill pipe power generator comprises a mud drill pipe, a main rotary shaft, a power generator, a magnetic shaft coupler and a working circuit; a mud turbine mechanism is composed of a guide wheel and a rotary wheel; the guide wheel is fixedly mounted on a machine body of an underground power generating system, and is provided with spiral blades; the rotary wheel is mounted on a transmission shaft in a key joint mode, is arranged at one side of a guide wheel mechanism, and is equipped with spiral blades; a turbine on the lowest part of the mud turbine mechanism is connected with an outer-ring magnet of the magnetic shaft coupler; an inner-ring magnet of the shaft coupler is connected with the main rotary shaft; a silicon steel sheet hooped with coils is arranged outside the main rotary shaft in a sleeved manner; a main sleeve is arranged outside the coils; and tile-shaped magnets are arranged on the inner wall of the main sleeve. According to the drill pipe power generator for drilling disclosed by the invention, the underground power generating system converts fluid mechanical energy of mud originally used for drill bit cooling into kinetic energy of the turbine, so that power is provided for underground measuring instruments, and therefore, compared with a conventional lithium battery, the drill pipe power generator effectively achieves stable work under a high-temperature environment, saves energy sources, improves economic benefits and reduces the environmental pollution problem.

Description

technical field [0001] The invention relates to a drill pipe power generation device, in particular to a drill pipe power generation device for drilling. Background technique [0002] Oil drilling rigs widely use high-performance lithium batteries to power downhole measuring instruments, and the working temperature of lithium batteries is 150-175oC. The high temperature environment in deep wells will greatly reduce the performance and life of lithium batteries, or even fail to work. In addition, frequent replacement of lithium batteries will make the sealing performance of the device unable to be guaranteed, which will lead to safety performance problems, because the downhole measuring instrument is not allowed to be disassembled frequently in order to ensure the sealing under high pressure (100MPa). In addition, the use of lithium batteries for power will also cause environmental pollution. [0003] Now there is also a drill pipe power generation device with its own power...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of kinetic energy conversion of downhole mud power generation equipment, the present invention provides a drill pipe power generation device for drilling, which adopts an axial flow structure, which can effectively solve the problem of kinetic energy conversion of downhole mud power generation equipment, thereby ensuring that the downhole generator can be stable and efficient Provide power to the measurement and control system while drilling

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