Electrically-driven PDC drill bit

Abstract

The invention provides an electrically-driven PDC drill bit. The electrically-driven PDC drill bit comprises an electric spindle; the electric spindle comprises a first shell; a transmission assembly; the transmission assembly is provided with a first end and a second end which are opposite, and comprises at least two sections of transmission shafts which are connected in sequence; the first end is connected with the output end of the electric spindle; a connecting assembly; the connecting assembly comprises a second shell and a connecting body arranged in the second shell; the second shell is fixedly connected with the first shell; the connecting body is in transmission connection between two adjacent sections of transmission shafts; a bit body; the drill bit body is connected with the second end. According to the electrically-driven PDC drill bit, the possible shaking length of the transmission assembly is greatly shortened, violent shaking of the drill bit body can be avoided, the drill bit body can be protected, and the straightness and the hole diameter of a drilled hole can be guaranteed.

Description

technical field [0001] The present application relates to the technical fields of equipment such as oil exploration, mining, site drilling and trenchless, and in particular, to an electric drive PDC drill bit. Background technique [0002] The geology and topography in the development of oil and gas resources are complex and diverse, and the application of traditional drilling construction technology has certain limitations, which may affect or even limit the normal development of oil exploration. [0003] There are many equipment and tools for drilling work. During the development of oil and gas exploration projects, the drilling speed-up technology was derived and developed, which solved the problem of complex and diverse geological topography. Effective control of fluid characteristics in oil and gas wells, so as to ensure the smooth development of oil development. [0004] However, the current drilling rigs that provide power are large in size, and the drill pipe needs ...

AI Technical Summary

Problems solved by technology

[0004] However, the current drilling rigs that provide power are large in size, and the drill rod needs to be lengthened when drilling deep holes, which will cause the drill bit to vibrate violently when rotating at high speed, damage the drill bit, and cannot guarantee the straightness and aperture of the drilled hole. will be affected; therefore, in the current development of drilling speed-up technology, stable speed-up devices must be continuously optimized and developed

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