Injection type suction drilling tool for cutting removal of drilling center of weak formation and using method of drilling tool
An ejector-type, formation-based technology, which is applied in the direction of liquid/gas jet drilling, drill pipe, drill pipe, etc., can solve difficult problems, achieve reliable sealing, improve drilling efficiency, and simple operation and installation
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[0026] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0027] Such as figure 1Shown is the cross-sectional view of the power part of the ejection type suction drilling tool used for drilling the central slag discharge in the soft formation; as figure 2 Shown is the cross-sectional view of the drill bit part of the ejection type suction drilling tool used for drilling the center of slag discharge in the soft formation; as image 3 Shown is the cross-sectional view of the drill bit in the ejection type suction drilling tool used for drilling the central slag discharge in the soft formation; as Figure 4 Shown is the perspective view of the drill bit in the ejection type suction drilling tool for drilling into the center of slagging in soft formations according to the present invention. The ejection type suction drilling tool for drilling into the center of slag removal in soft formations of the...
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