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Drill bit

A drill bit and body technology, applied in the field of petroleum downhole tools, can solve problems such as inability to meet, no drill bit, and inability to transmit torque WOB.

Active Publication Date: 2017-06-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the borehole size is small to a certain size, and the borehole depth reaches a certain size, the drill string cannot transmit the torque on bit due to buckling, so the conventional drill bit and its use method cannot meet the requirements of fine borehole (hole diameter less than 20mm) drilling. need
In view of this, although there are many types of drill bits of various types and sizes used in oil drilling, there is no drill bit for micro-hole drilling.

Method used

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with accompanying drawing.

[0022] The particulars presented here are exemplary and used for illustrative discussion of embodiments of the invention only, and are presented to provide what is believed to be the most useful and understandable description of the principles and conceptual aspects of the invention. Regarding this point, there is no attempt to introduce the structural details of the present invention beyond the level required for a basic understanding of the present invention. Those skilled in the art can clearly understand how to implement the present invention in practice through the description and accompanying drawings. Several forms.

[0023] figure 1 A schematic structural view of a drill bit 100 provided according to the present invention is shown. The drill bit 100 includes a bit body 10 having an impeller 14 at a first end thereof, and a slice 30 connected to a second end opposi...

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PUM

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Abstract

The invention discloses a drill bit. The drill bit comprises a drill bit body, and an impeller and a slicing piece which is connected with the second end opposite to the first end of the drill bit body are arranged at the first end of the drill bit body. The drill bit body comprises a blind hole formed in the second end of the drill bit body, and a plurality of overflowing holes are formed in the peripheral wall of the body and communicate with the blind hole. According to the drill bit, drilling pressure and torque of the drill bit can be applied under the fluid effect, so that micro and fine well holes for petroleum production are achieved.

Description

technical field [0001] The invention relates to a petroleum downhole tool, in particular to a drill bit. Background technique [0002] The drill bit is a common tool for producing boreholes in oil drilling. In the prior art, the drill bit is usually connected to the bottom of the drill string to provide rotational torque and pressure through the drill string to cut formation rocks and form a borehole. When the borehole size is small to a certain size, and the borehole depth reaches a certain size, the drill string cannot transmit the torque on bit due to buckling, so the conventional drill bit and its use method cannot meet the requirements of fine borehole (hole diameter less than 20mm) drilling. need. In view of this, although there are many kinds of drill bits of various types and sizes used for oil drilling, there is no drill bit for fine borehole drilling. Contents of the invention [0003] Aiming at the shortcomings of the prior art, the present invention proposes ...

Claims

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Application Information

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IPC IPC(8): E21B10/00E21B10/43E21B10/60E21B10/633E21B4/02
CPCE21B4/02E21B10/00E21B10/43E21B10/602E21B10/633
Inventor 曾义金马兰荣戴文潮程光明赵晨熙邓继文尹垒
Owner CHINA PETROLEUM & CHEM CORP
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