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Cutting elements, methods for manufacturing such cutting elements, and tools incorporating such cutting elements

A cutting element and cutting edge technology, applied in the field of polycrystalline diamond body, can solve the problems of PCD body fragmentation, local fracture, spallation, etc.

Active Publication Date: 2012-05-16
SMITH INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, solvent metal catalysts are known to cause an undesired catalytic phase transformation within diamond (converting diamond to carbon monoxide, carbon dioxide or graphite) with increasing temperature, thereby limiting the practical use of PCD bodies to 750 °C
[0007] Thermal degradation can lead to fragmentation, spallation, partial fracture and / or spalling of the PCD body

Method used

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  • Cutting elements, methods for manufacturing such cutting elements, and tools incorporating such cutting elements
  • Cutting elements, methods for manufacturing such cutting elements, and tools incorporating such cutting elements
  • Cutting elements, methods for manufacturing such cutting elements, and tools incorporating such cutting elements

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Embodiment Construction

[0038] The present invention relates to cutting elements comprising a polycrystalline diamond (PCD) body having a high diamond content and improved thermal properties. In various embodiments described herein, cutting elements with high diamond content include modified PCD structures and / or modified interfaces (between PCD body and matrix) to provide superior performance.

[0039] The invention described below refers to various embodiments of the invention.

[0040] The disclosed embodiments have broad applicability, and discussion of any embodiment is meant to be exemplary of that embodiment only, and is not intended to imply that the scope of the invention, including the claims, is limited to that embodiment or features of that embodiment. .

[0041] Certain terms are used in the following description and claims to refer to particular features and components. As will be understood by those skilled in the art, different persons may refer to the same feature or component by d...

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Abstract

The present disclosure relates to cutting elements incorporating polycrystalline diamond bodies used for subterranean drilling applications, and more particularly, to polycrystalline diamond bodies having a high diamond content which are configured to provide improved properties of thermal stability and wear resistance, while maintaining a desired degree of impact resistance, when compared to prior polycrystalline diamond bodies, hi various embodiments disclosed herein, a cutting element with high diamond content includes a modified PCD structure and / or a modified interface (between the PCD body and a substrate), to provide superior performance.

Description

technical field [0001] The present invention relates to cutting elements comprising polycrystalline diamond bodies for subterranean drilling applications, and more particularly to polycrystalline diamond bodies having a high diamond content configured to provide thermal Improved properties of stability and abrasion resistance while maintaining a desired degree of impact resistance Background technique [0002] Polycrystalline diamond (PCD) materials known in the prior art consist of diamond grains (or crystals) and a catalyst material which can withstand high pressure and high temperature conditions ("HPHT sintering process"). Such PCD materials are known to be highly wear resistant, making them ideal for such industrial applications where a high degree of wear resistance is desired, such as cutting tools for machining and wear and cutting elements in underground mining and drilling. A universal material choice. In such applications, conventional PCD materials may be provi...

Claims

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Application Information

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IPC IPC(8): E21B10/46B22F7/06E21B10/54E21B10/42
CPCB24D3/10B01J2203/0685B01J3/062B01J2203/0655B22F2998/10C22C2026/006B22F2999/00E21B10/5735B01J2203/062B22F2005/001C22C26/00E21B10/567B22F7/02B22F7/06E21B10/46B22F7/062B22F3/14B22F2003/244B22F2207/01B22F2207/13B22F2207/17E21B10/55
Inventor J·D·贝尔奈普G·弗罗宁于峰P·T·卡里维奥Y·张申跃林詹国栋
Owner SMITH INT INC