Composite drill bit

A composite drill bit and drill bit technology, applied in drill bits, drilling equipment, earth-moving drilling, etc., can solve the problems of easy damage of composite sheets, scrapped drill bits, and low ROP.

Pending Publication Date: 2021-05-14
莱州市原野科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ROP at the center of the composite drill bit is low, the rock-breaking efficiency is not high, and the composite sheet is ea

Method used

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  • Composite drill bit
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Examples

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Embodiment Construction

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts all belong to the protection scope of the present invention.

[0048] In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying...

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PUM

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Abstract

The invention provides a composite drill bit. The composite drill bit comprises a drill bit handle, at least two sets of roller bits and a PDC drill bit, and the drill bit handle is cylindrical, and at least two sets of bit legs are oppositely arranged at the top end of the drill bit handle; at least two sets of roller bits are rotationally arranged on the bit legs at the top end of the bit handle correspondingly, and each roller bit comprises a roller bit body rotationally connected to the top end of the drill bit handle, a conical spherical tooth arranged on the roller bit body and a protective tooth annularly arranged on the roller bit body; and the PDC drill bit is clamped between the roller bit bodies, the PDC drill bit comprises a plurality of sets of blades, each set of blades comprises two wing arms in the acute angle direction, each set of wing arms extend in the circumferential direction along the center axis of the drill bit handle, and a plurality of sets of PDC cutting teeth are evenly embedded in at least one side of each set of wing arms. According to the composite drill bit, the drilling efficiency is greatly improved through organic composite circulation of the roller bits and the PDC drill bit.

Description

technical field [0001] The invention relates to the technical field of drilling equipment, in particular to a composite drill bit. Background technique [0002] In oil and gas, mining engineering, building foundation engineering construction, geological and hydrological drilling engineering, drill bits are usually used to break rocks. Drill bits are rock-breaking tools used to break rocks during drilling to form shafts. At present, the most widely used rock-breaking tools in drilling construction are roller cone bits and PDC polycrystalline diamond compact bit. The drill bit used in drilling engineering mainly contains tricone bit and PDC bit at present, and wherein, tricone bit comprises steel tooth drill bit (also known as milling tooth drill bit) and cemented carbide tooth drill bit (claimed tooth drill bit again). [0003] With the gradual development of oil and gas exploration and development towards deep wells and ultra-deep wells, the hardness and plasticity of rocks...

Claims

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Application Information

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IPC IPC(8): E21B10/00E21B10/16E21B10/60E21B10/43E21B10/54
CPCE21B10/00E21B10/16E21B10/43E21B10/54E21B10/602
Inventor 褚方磊白建松许宪军褚志刚丛宁辉阿地力萨地尔
Owner 莱州市原野科技有限公司
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