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Fixed cutter bits and other downhole tools having non-planar cutting elements thereon

A technology of cutting tools and cutting elements, which is applied in the field of cutting elements and downhole cutting tools, and can solve the problems of impact drilling bit failure, massive abrasive force of drill bits and PDC cutters, etc.

Active Publication Date: 2018-07-17
SMITH INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, drills and PDC cutters can be subject to significant abrasive forces
In some cases, impact, vibration and aggressiveness have caused drill bits to fail due to wear of one or more cutters or due to breakage of the inserts

Method used

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  • Fixed cutter bits and other downhole tools having non-planar cutting elements thereon
  • Fixed cutter bits and other downhole tools having non-planar cutting elements thereon
  • Fixed cutter bits and other downhole tools having non-planar cutting elements thereon

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Experimental program
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Embodiment Construction

[0045] Embodiments disclosed herein generally relate to shaped cutting elements, such as cutting elements having non-planar cutting faces and / or cutting elements having non-cylindrical bases. Some embodiments disclosed herein relate to cutting elements having non-planar and non-conical cutting faces and such cutting elements on cutting tools. Some embodiments disclosed herein relate generally to cutting elements having non-planar cutting faces on non-cylindrical substrates and such cutting elements on cutting tools. In some embodiments, cutting elements may be used on a downhole drilling tool, for example, for plowing or wedge cutting actions or for coring. Additionally, some embodiments may be retained to a cutting tool using a floating retention mechanism.

[0046]According to some embodiments of the present disclosure, a cutting element may include a body of superhard material on a non-cylindrical substrate. As mentioned herein, a non-cylindrical substrate may include a s...

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PUM

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Abstract

A downhole cutting tool includes a body having a central axis extending therethrough, a plurality of blades extending outwardly from the body and converging towards a central region around the centralaxis, and at least one cutting element having a longitudinal axis, a non-cylindrical substrate, and an ultra-hard material body on the non-cylindrical substrate, the ultra-hard material body having aside surface extending around a cutting face and defining a cross-sectional shape of the ultra-hard material body, and the side surface comprising an edge having an inner angle of less than 180 degrees.

Description

Background technique [0001] Drilling bits known as "fixed cutter" or "scraper" bits include a bit with a cutting element attached to a bit body, which may be a steel bit body or made of a matrix material such as tungsten carbide and a binder. material forming the matrix drill body. There are different types of drag bits and methods of forming them known in the art. For example, drag bits having cutting elements made of a superhard cutting surface layer or "table" deposited or otherwise bonded to a substrate, such as made of polycrystalline diamond material or polycrystalline boron nitride material, are used in These are known in the art as polycrystalline diamond compact ("PDC") drills. [0002] PDC cutters have been used for many years in industrial applications including rock drilling and metal machining. In a PDC drill bit, the PDC cutter is received within a cutter pocket formed within a blade extending from the drill body, and the PDC cutter may be joined to the blade ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/42E21B10/43E21B10/54
CPCE21B10/5673
Inventor M.G.阿扎尔S.瓦利亚潘J.R.格雷格J.M.塞尔夫K.M.斯帕格诺勒蒂A.J.巴尔B.杜赖拉扬
Owner SMITH INT INC