Casting spiral scraper knife blade

A technology of spiral scraper and knife wing, applied in the field of machinery, can solve the problems of poor mud removal, poor well quality, poor trimming effect, etc., and achieve the effect of facilitating cutting removal, improving well quality and drilling efficiency

Inactive Publication Date: 2015-05-06
QINGGANG QINGCHUN OIL FIELD MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing drill bit scraper blades that have poor trimming effect on the well wall, resulting in poor well quality and poor mud chip removal, the present invention provides a cast helical scraper blade, the casting helical scraper blade The rear end of the cutting edge is connected with a gauge section, and the gauge section is spiral, which has a good effect on the well wall trimming, improves the quality of the wellbore, and can also play the role of guiding the mud to make the mud chip removal smoother

Method used

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  • Casting spiral scraper knife blade
  • Casting spiral scraper knife blade
  • Casting spiral scraper knife blade

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with accompanying drawing:

[0012] Depend on Figure 1 to Figure 3 As shown, a cast spiral scraper blade includes a cutter body 3, several cutter bodies 3 are uniformly fixed on the drill body 1, the cutter body 3 and the drill body 1 are welded, and the upper end of the cutter body 3 is a cutting section 4 , the front end and the side of the cutting section 4 are cutting edges 5, and the cutting edges 5 have the same structure as the cutting edge of the existing scraper blade. The lower end of the cutter body 3 is a gauge section 2, the cutting section 4 is smoothly connected with the gauge section 2, and the gauge section 2 is a spiral shape along the outer circumference of the drill body 1, that is, the gauge section on each cutter body 3 2 spirally rotates in the same direction along the outer circumference of the drill body 1, and the length of the gauge section 2 is greater than the length of t...

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Abstract

The invention relates to a casting spiral scraper knife blade and aims at mainly solving the problems of an existing drill bit scraper knife blade that the finishing effect on a well wall is poor, the quality of a well body is not good and slurry removal is not smooth. The casting spiral scraper knife blade is characterized in that the lower end of a knife body (3) is a diameter-keeping section (2); a cutting section (4) is in smooth connection with the diameter-keeping section (2); the diameter-keeping section (2) is in a spiral shape along the outer circumference of a drill bit body (1). The rear end of a cutting edge of the casting spiral scraper knife blade is connected with the diameter-keeping section and the diameter-keeping section is in a spiral shape, so that the finishing effect on the well wall is good and the quality of the well body is good; the effect of guiding slurry can also be realized and the slurry removal is smoother.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a casting spiral scraper blade. Background technique [0002] Present oil field uses the surface layer scraper drill bit, adopts gas cutting blanking during its scraper blade processing, then processes the shape with a machine tool. The front end of the scraper blade is a cutting edge. When drilling, the drill bit body drives the cutting edge to rotate to drill the rock formation. However, the well wall will become loose after drilling, and the current scraper blade has a poor trimming effect on the well wall, resulting in The quality of the wellbore is not good, and the mud and chips are not well removed. Contents of the invention [0003] In order to overcome the shortcomings of the existing drill bit scraper blades that have poor trimming effect on the well wall, resulting in poor well quality and poor mud chip removal, the present invention provides a cast helical scraper blade, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/43
CPCE21B10/43
Inventor 姜文李刚
Owner QINGGANG QINGCHUN OIL FIELD MACHINERY MFG CO LTD
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