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
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[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
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