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Composite drill bit with roller cone arranged on tool blade

A composite drill bit and roller cone technology, which is applied in construction and other directions, can solve the problems of tight local space of composite drill bits, assembly errors, and impact on product quality, etc., to increase space utilization, reduce assembly errors and reduce manufacturing process steps. Effect

Inactive Publication Date: 2017-01-04
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 composite drill bit with cones arranged on the blade, which solves the problems of the existing composite drill bit that the local space is tight, and large errors are likely to occur during assembly, which affects product quality.

Method used

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  • Composite drill bit with roller cone arranged on tool blade
  • Composite drill bit with roller cone arranged on tool blade
  • Composite drill bit with roller cone arranged on tool blade

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] The present invention is a composite drill bit with cones arranged on blades, the structure of which is as follows: figure 1 As shown, the top view is as figure 2 As shown, the drill body 1 is included, the drill body 1 is provided with a fixed cutter 2 and a nozzle 6, the fixed cutter 2 is provided with a fixed cutting tooth 3 and a cone 5, and the cone 5 is provided with a cone cutter 4.

[0019] At least one cone 5 arranged on each fixed blade 2 ( figure 1 There is 1 cone 5 shown in).

[0020] The cone 5 is arranged in the inner cone area or the nose area or the shoulder area or the gage area corresponding to the fixed blade 2. A combination of one or more areas ( figure 1 The cone 5 shown in the figure is arranged in the corresponding shoulder area of ​​the fixed blade 2).

[0021] The normal height difference between the 4 to...

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Abstract

The invention discloses a composite drill bit with a roller cone arranged on a tool blade. The composite drill bit comprises a drill bit body, wherein the fixed tool blade and a spray nozzle are arranged on the drill bit body; fixed cutting teeth and the roller cone are arranged on the fixed tool blade; cone roller cutting teeth are arranged on the roller cone. The composite drill bit with the roller cone arranged on the tool blade has the advantages that rock is impacted and pre-crushed by the roller cone cutting teeth, and the fixed cutting teeth on the fixed tool blade are assisted to effectively enter the rock; by arranging the roller cone on the tool blade, the space utilization rate of the composite drill bit is increased, jaws are not used, manufacturing technological steps are reduced, the assembly error is reduced, and the quality of the drill bit is improved.

Description

technical field [0001] The invention belongs to the technical field of oil drilling equipment, and in particular relates to a composite drill bit with cones arranged on blades. Background technique [0002] At present, in oil, natural gas and other prospecting drilling operations, roller cone bits and PDC (polycrystalline diamond compact) bits are mainly used. When drilling in formations such as interlaced soft and hard layers and gravel layers, the drilling speed of the roller cone bit is slow, the footage is low, and it is easy to cause the life of the roller cone bit to be short; the composite sheet of the PDC bit is easily subjected to a large impact load and causes the composite sheet to fail. As a result, the ROP of the drill bit is affected, and the drill bit fails due to premature damage of the PDC cutter. The patent "Hybrid Drill Bit and Its Drilling Method" (application number: 2008800166300, application date: 2008.4.4, publication number: 101765695, publication d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/43
CPCE21B10/43
Inventor 石擎天邓宝游娜吴小雄刘晓旭闫静
Owner BAOJI PETROLEUM MASCH CO LTD
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