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Combined gauge protection polycrystalline diamond compact bit

A technology of drill bit and gauge, applied in drill bits, drilling equipment, earth-moving drilling, etc., can solve the problem of not being able to adjust the length of the gauge section, and achieve the effects of improving the quality of the wellbore, safely transmitting torque, and improving the utilization rate

Inactive Publication Date: 2017-01-11
BAOJI PETROLEUM MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a combined gauge PDC drill bit, which solves the problem that the existing PDC drill bit cannot adjust the length of the gauge section

Method used

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  • Combined gauge protection polycrystalline diamond compact bit
  • Combined gauge protection polycrystalline diamond compact bit
  • Combined gauge protection polycrystalline diamond compact bit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of combination gauge PDC drill bit of the present invention, as figure 1 as shown, figure 1 The cutaway view is as figure 2 As shown, the drill body 1 is included, the drill body 1 is provided with a cutter hub 3 and a nozzle 5, fixed cutting teeth 4 and gage teeth a6 are arranged on the cutter hub 3, three gage rings 2 are arranged on the drill bit, and the gage rings 2 are arranged on the drill bit. Ring 2 is connected with drill bit body 1 by fastener 7; as image 3 Shown is a schematic diagram of the structure of the gauge ring 2, key grooves are arranged on the drill body 1 and the gauge ring 2, and the torque is transmitted through the key 10; the gauge ring 2 is provided with a gauge tooth b8, and the gauge ring 2 and the blade 3 have Matching cutting contours9.

Embodiment 2

[0024] refer to Figure 4 The combined gauge PDC drill bit, according to the above-mentioned embodiment 1, the number of gauge rings 2 is two.

Embodiment 3

[0026] refer to Figure 5 According to the above embodiment 1, the gauge teeth b8 arranged on the gauge ring 2 are active gauge teeth.

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PUM

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Abstract

The invention discloses a combined gauge protection polycrystalline diamond compact bit. The combined gauge protection polycrystalline diamond compact bit comprises a bit body and a gauge protection ring which are connected through fasteners, blades and nozzles are arranged on the bit body, fixed cutting teeth and gauge protection teeth a are arranged on the blades, and gauge protection teeth b are arranged on the gauge protection ring. According to the combined gauge protection polycrystalline diamond compact bit, the purpose of adjusting the gauge protection length is achieved through different gauge protection ring combinations, the different drilling technology requirements for preventing deviation of a vertical shaft and orientating an inclined shaft with one bit, the shaft body quality is improved, and the shaft building cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of drill bits for oil and natural gas drilling and other prospecting operations, and in particular relates to a combined gauge PDC drill bit. Background technique [0002] At present, in oil, natural gas and other prospecting drilling operations, PDC (polycrystalline diamond compact) drill bits are mainly used for drilling operations. With the technological advancement of drilling technology, different wellbore structures have higher and higher requirements for drill bits. In the drilling process of the straight section, in order to achieve anti-deviation and straightening, the PDC bit needs a longer gauge section structure; in the drilling process of the deflection section, in order to improve the deflection capability, the PDC bit needs a shorter gauge section Structure; in the process of horizontal section drilling, in order to ensure the quality of the wellbore, the tool face of the PDC bit is required ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/54E21B10/43
CPCE21B10/43E21B10/54
Inventor 邓宝石擎天王德贵刘晓旭
Owner BAOJI PETROLEUM MASCH CO LTD