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Reverse ejection type drill bit

A drill bit and drilling technology, applied in the direction of drill bit, drilling equipment, earthwork drilling, etc., can solve the problems affecting the drilling speed and downhole safety, and achieve the effect of simple structure, increased flow capacity, easy manufacture and use

Inactive Publication Date: 2018-11-23
SICHUAN XILIN OIL SUPPLIES EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But in actual operation, the work of hydraulic equipment may affect the drilling speed and downhole safety

Method used

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  • Reverse ejection type drill bit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as figure 1 As shown, the anti-spray type drill bit, the reverse-spray type drill bit, includes the upper connecting handle 1 and the drilling part connected to the lower end of the connecting handle 1, and the drilling part is provided with a plurality of blades 2, and the inside of the drilling part A flushing water flow channel 5 is also provided; the connecting handle 1 is a cylindrical structure with an open upper end, and the upper ends of the flushing water flow channel 5 are connected with the central hole on the connecting handle 1, and also include an anti-spray flow channel arranged in the drilling part 6. It also includes an elastic sheet 7 installed in the anti-spray flow channel 6, one end of the elastic sheet 7 is fixedly connected with the hole wall of the anti-spray flow channel 6, and the other end extends into the anti-spray flow channel 6.

[0020] As a person skilled in the art, when the anti-spray type drill bit is working, the flushing water ...

Embodiment 2

[0022] Such as figure 1 As shown, this embodiment is further limited on the basis of Embodiment 1: the blades 2 are uniformly distributed in a ring with respect to the axis of the connecting handle 1, and the lower ends of the blades 2 are surrounded by a The bottom groove 4 at the lower end of the bottom part also includes a plurality of mud discharge holes 3 opened on the drilling part. The contact position of the shank 1 and the drilling part. In this solution, the blade 2 is a part directly used on the drilling part to interact with rock and soil to realize drilling. In this solution, a plurality of blades 2 are evenly distributed in a ring and form a bottom at the lower end of the drilling part Groove 4, during the working process of the drill bit, the drilling mud produced by the interaction between the drill bit and the rock and soil can be discharged from the mud discharge holes 3 to the joint position between the connecting handle 1 and the drilling part, and the abo...

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PUM

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Abstract

The invention discloses a reverse ejection type drill bit which comprises an upper connecting handle and a drilling part connected with the lower end of the connecting handle. A plurality of cutter wings are arranged on the drilling part, and flushing water runners are further arranged inside the drilling part; the connecting handle is of a cylindrical structure with an upper open end, the upper ends of the flushing water runners are all connected with a center hole in the connecting handle, and the drill bit further comprises a reverse ejection runner arranged inside the drilling part and anelastic piece installed inside the reverse ejection runner, one end of the elastic piece is fixedly connected with the hole wall of the reverse ejection runner, and the other end of the elastic pieceextends into the reverse ejection runner. Due to the structural design of the drill bit, the reverse ejection runner can perform automatic pressure relief, and the drill bit is simple in structure.

Description

technical field [0001] The invention relates to the technical field of geological drilling equipment, in particular to an anti-spray type drill bit. Background technique [0002] In the prior art, the PDC bit is widely used in the oil drilling process. Since the surface of the PDC bit needs to be as clean as possible during the working process of the PDC bit, that is, the bit does not contain mud, so in the prior art, it is used as a supporting tool for the PDC bit. The hydraulic equipment of the device is the guarantee equipment for the normal operation of the PDC drill bit. [0003] But in actual operation, the work of hydraulic equipment may affect the drilling speed and downhole safety. [0004] Further optimizing the structural design of the PDC bit to improve the performance of the PDC bit is a technical problem to be solved urgently by those skilled in the art. Contents of the invention [0005] To further optimize the structural design of the PDC drill bit propos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/60
CPCE21B10/60E21B10/602
Inventor 谭逢林
Owner SICHUAN XILIN OIL SUPPLIES EQUIP