Wear response of impregnated diamond bits

© 2018 Elsevier B.V. The drilling response of impregnated diamond (ID) bits is controlled by processes involved in the rock fragmentation, and also the wear processes that continuously change the bearing surface of diamonds and bonding matrix. Due to the co-existence of these two processes both affe...

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Main Authors: Mostofi, Masood, Richard, T., Franca, L., Yalamanchi, S.
Format: Journal Article
Published: Elsevier BV 2018
Online Access:http://hdl.handle.net/20.500.11937/68916
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author Mostofi, Masood
Richard, T.
Franca, L.
Yalamanchi, S.
author_facet Mostofi, Masood
Richard, T.
Franca, L.
Yalamanchi, S.
author_sort Mostofi, Masood
building Curtin Institutional Repository
collection Online Access
description © 2018 Elsevier B.V. The drilling response of impregnated diamond (ID) bits is controlled by processes involved in the rock fragmentation, and also the wear processes that continuously change the bearing surface of diamonds and bonding matrix. Due to the co-existence of these two processes both affecting the overall drilling response but differently based on drilling conditions (operating parameters, bit, rock and drilling fluid), the response of ID bits has been found inconsistent and difficult to interpret. In this paper, wear mechanisms of impregnated diamond bits are studied using a series of precise state of the art cutting and drilling experiments conducted with impregnated diamond bits and segments. The wear responses are decomposed into three phases of polishing, fracturing and sharpening, and the response in each phase is analyzed using interface laws in terms of depth of cut, and the extents of frictional contacts. The variation of the response at various operating parameters (weight on bit and depth of cut) are obtained and conceptual models characterizing the drilling response under both weight-on-bit and depth of cut conditions are presented.
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institution Curtin University Malaysia
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publishDate 2018
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spelling curtin-20.500.11937-689162018-06-29T12:35:26Z Wear response of impregnated diamond bits Mostofi, Masood Richard, T. Franca, L. Yalamanchi, S. © 2018 Elsevier B.V. The drilling response of impregnated diamond (ID) bits is controlled by processes involved in the rock fragmentation, and also the wear processes that continuously change the bearing surface of diamonds and bonding matrix. Due to the co-existence of these two processes both affecting the overall drilling response but differently based on drilling conditions (operating parameters, bit, rock and drilling fluid), the response of ID bits has been found inconsistent and difficult to interpret. In this paper, wear mechanisms of impregnated diamond bits are studied using a series of precise state of the art cutting and drilling experiments conducted with impregnated diamond bits and segments. The wear responses are decomposed into three phases of polishing, fracturing and sharpening, and the response in each phase is analyzed using interface laws in terms of depth of cut, and the extents of frictional contacts. The variation of the response at various operating parameters (weight on bit and depth of cut) are obtained and conceptual models characterizing the drilling response under both weight-on-bit and depth of cut conditions are presented. 2018 Journal Article http://hdl.handle.net/20.500.11937/68916 10.1016/j.wear.2018.04.010 Elsevier BV restricted
spellingShingle Mostofi, Masood
Richard, T.
Franca, L.
Yalamanchi, S.
Wear response of impregnated diamond bits
title Wear response of impregnated diamond bits
title_full Wear response of impregnated diamond bits
title_fullStr Wear response of impregnated diamond bits
title_full_unstemmed Wear response of impregnated diamond bits
title_short Wear response of impregnated diamond bits
title_sort wear response of impregnated diamond bits
url http://hdl.handle.net/20.500.11937/68916