Drill bit

A technology of drill bits and blades, which is applied in the direction of drill bits, drilling equipment, earthwork drilling, etc., can solve the problem that the number of water nozzles cannot meet the demand, and achieve the effect of increasing the water output

Inactive Publication Date: 2012-05-16
TIANJIN RING TOP PETROLEUM MFR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, during the use of the drill bit, especially when the geological conditions or operating conditions are harsh, a large amount of water is required. However, the number of existing water nozzles cannot meet the demand under the condition of keeping the water flow pressure constant

Method used

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Embodiment Construction

[0013] see figure 2 According to the present invention, a crown 1 of a drill bit used for drilling operations has five blades 2, and water nozzles 3 are provided in the gaps between the blades 2. The number of water nozzles 3 is six, and the number of water nozzles 3 is one more than the number of blades 2 .

[0014] see image 3 , The crown 1 of the drill bit in another embodiment has five blades 2, and a water nozzle 3 is provided at the gap between the blades 2. The quantity of water nozzle 3 is seven, and the quantity of water nozzle 3 is two more than the quantity of blade 2.

[0015] In a third embodiment (not shown in the figure), the crown of the drill bit has six blades, and water nozzles are provided in the gaps between the blades. The number of water nozzles is seven, and the number of water nozzles is one more than the number of blades.

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PUM

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Abstract

The invention discloses a drill bit, comprising multiple knife wings on a crown of a drill bit, and water nozzles on gaps between the knife wings; the number of the water nozzles is bigger than that of the knife wings by 1-3. The beneficial effects of the drill bit are as follows: the number of the water nozzles is increased and the water output is raised such that during the use of the drill bit, cleaning, scouring and cooling functions can be better fulfilled.

Description

technical field [0001] The invention relates to a drill bit used for drilling operations in oil fields. Background technique [0002] see figure 1 , The crown 1 of the drill bit used for drilling operations has blades 2, generally 3 to 8 pieces, and a water nozzle 3 is provided at the gap between the blades 2. [0003] In the prior art, the number of blades is the same as the number of nozzles, and the nozzles can spray water to clean, flush and cool the well during drilling. [0004] However, during the use of the drill bit, especially when the geological conditions or operating conditions are harsh, a large amount of water is required. However, the number of existing water nozzles cannot meet the demand under the condition of keeping the water flow pressure constant. Contents of the invention [0005] The invention discloses a drill bit capable of increasing the water output. By increasing the number of water nozzles, the cleaning, scouring and cooling functions are be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/60
Inventor 卢伟郭兆勇
Owner TIANJIN RING TOP PETROLEUM MFR
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