EXPERIMENTAL STUDY OF THE EFFECT OF COOLING LUBRICATING FLUIDS ON PENETRATION RATE IN A HARD AND SOFT ROCK DRILLING PROCESS

Rock drilling is the process of penetrating and crushing rocks, which is characterized by the low rate of penetration (ROP) and drilling rate because of the amount of cuttings that remain in the drilling environment and the thermal stresses generated at the bit-rock interface. Any improvement in ROP...

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Autores principales:	Shahrokh Khosravimanesh, Masoud Cheraghi Seifabad, Reza Mikaeil, Raheb Bagherpour
Formato:	article
Lenguaje:	EN HR
Publicado:	Faculty of Mining, Geology and Petroleum Engineering 2021
Materias:	drilling rate of penetration cooling lubricating fluid multivariate statistical analysis SPSS Mining engineering. Metallurgy TN1-997 Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/03cc16b9d76f4321ab3eea3f6e939d3d
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spelling	oai:doaj.org-article:03cc16b9d76f4321ab3eea3f6e939d3d2021-12-05T20:13:23ZEXPERIMENTAL STUDY OF THE EFFECT OF COOLING LUBRICATING FLUIDS ON PENETRATION RATE IN A HARD AND SOFT ROCK DRILLING PROCESS1849-0409https://doaj.org/article/03cc16b9d76f4321ab3eea3f6e939d3d2021-01-01T00:00:00Zhttps://hrcak.srce.hr/file/386704https://doaj.org/toc/1849-0409Rock drilling is the process of penetrating and crushing rocks, which is characterized by the low rate of penetration (ROP) and drilling rate because of the amount of cuttings that remain in the drilling environment and the thermal stresses generated at the bit-rock interface. Any improvement in ROP and drilling rate can be of great technical and economic value for drilling projects. ROP can be improved through the proper use of cooling-lubricating fluids during drilling. ROP is a key indicator of drilling performance and the ability to predict this rate can be very useful for mining projects. ROP prediction can also be used to estimate the total cost of a drilling operation. ROP depends on a variety of parameters, which, when available, can be used to estimate ROP. To reach a better understanding of the parameters affecting ROP and how it can be optimized, in this study, the results of 492 laboratory drilling tests were analyzed by linear and nonlinear multivariate regression in SPSS to build a number of models for ROP prediction. These tests were conducted on seven soft and hard rock samples while using six fluids as the cooling-lubricating agent. The tests were performed with a laboratory-scale drilling rig on cubic specimens at several different rotation speeds and thrust forces. The results showed that the drilling achieved significantly higher ROP in the presence of the cooling-lubricating agent. After reviewing the results, several models that were able to produce ROP predictions with the lowest average estimation error were picked as suitable choices for predicting ROP in the presence of cooling-lubricating fluids. The results of statistical tests of these models showed with over 90% confidence that they can produce highly accurate ROP estimates based on mechanical properties of the rock, physical characteristics of the cooling-lubricating fluid, and operating parameters of the drilling rig.Shahrokh KhosravimaneshMasoud Cheraghi SeifabadReza MikaeilRaheb BagherpourFaculty of Mining, Geology and Petroleum Engineeringarticledrillingrate of penetrationcooling lubricating fluidmultivariate statistical analysisSPSSMining engineering. MetallurgyTN1-997GeologyQE1-996.5ENHRRudarsko-geološko-naftni Zbornik, Vol 36, Iss 5, Pp 79-91 (2021)
institution	DOAJ
collection	DOAJ
language	EN HR
topic	drilling rate of penetration cooling lubricating fluid multivariate statistical analysis SPSS Mining engineering. Metallurgy TN1-997 Geology QE1-996.5
spellingShingle	drilling rate of penetration cooling lubricating fluid multivariate statistical analysis SPSS Mining engineering. Metallurgy TN1-997 Geology QE1-996.5 Shahrokh Khosravimanesh Masoud Cheraghi Seifabad Reza Mikaeil Raheb Bagherpour EXPERIMENTAL STUDY OF THE EFFECT OF COOLING LUBRICATING FLUIDS ON PENETRATION RATE IN A HARD AND SOFT ROCK DRILLING PROCESS
description	Rock drilling is the process of penetrating and crushing rocks, which is characterized by the low rate of penetration (ROP) and drilling rate because of the amount of cuttings that remain in the drilling environment and the thermal stresses generated at the bit-rock interface. Any improvement in ROP and drilling rate can be of great technical and economic value for drilling projects. ROP can be improved through the proper use of cooling-lubricating fluids during drilling. ROP is a key indicator of drilling performance and the ability to predict this rate can be very useful for mining projects. ROP prediction can also be used to estimate the total cost of a drilling operation. ROP depends on a variety of parameters, which, when available, can be used to estimate ROP. To reach a better understanding of the parameters affecting ROP and how it can be optimized, in this study, the results of 492 laboratory drilling tests were analyzed by linear and nonlinear multivariate regression in SPSS to build a number of models for ROP prediction. These tests were conducted on seven soft and hard rock samples while using six fluids as the cooling-lubricating agent. The tests were performed with a laboratory-scale drilling rig on cubic specimens at several different rotation speeds and thrust forces. The results showed that the drilling achieved significantly higher ROP in the presence of the cooling-lubricating agent. After reviewing the results, several models that were able to produce ROP predictions with the lowest average estimation error were picked as suitable choices for predicting ROP in the presence of cooling-lubricating fluids. The results of statistical tests of these models showed with over 90% confidence that they can produce highly accurate ROP estimates based on mechanical properties of the rock, physical characteristics of the cooling-lubricating fluid, and operating parameters of the drilling rig.
format	article
author	Shahrokh Khosravimanesh Masoud Cheraghi Seifabad Reza Mikaeil Raheb Bagherpour
author_facet	Shahrokh Khosravimanesh Masoud Cheraghi Seifabad Reza Mikaeil Raheb Bagherpour
author_sort	Shahrokh Khosravimanesh
title	EXPERIMENTAL STUDY OF THE EFFECT OF COOLING LUBRICATING FLUIDS ON PENETRATION RATE IN A HARD AND SOFT ROCK DRILLING PROCESS
title_short	EXPERIMENTAL STUDY OF THE EFFECT OF COOLING LUBRICATING FLUIDS ON PENETRATION RATE IN A HARD AND SOFT ROCK DRILLING PROCESS
title_full	EXPERIMENTAL STUDY OF THE EFFECT OF COOLING LUBRICATING FLUIDS ON PENETRATION RATE IN A HARD AND SOFT ROCK DRILLING PROCESS
title_fullStr	EXPERIMENTAL STUDY OF THE EFFECT OF COOLING LUBRICATING FLUIDS ON PENETRATION RATE IN A HARD AND SOFT ROCK DRILLING PROCESS
title_full_unstemmed	EXPERIMENTAL STUDY OF THE EFFECT OF COOLING LUBRICATING FLUIDS ON PENETRATION RATE IN A HARD AND SOFT ROCK DRILLING PROCESS
title_sort	experimental study of the effect of cooling lubricating fluids on penetration rate in a hard and soft rock drilling process
publisher	Faculty of Mining, Geology and Petroleum Engineering
publishDate	2021
url	https://doaj.org/article/03cc16b9d76f4321ab3eea3f6e939d3d
work_keys_str_mv	AT shahrokhkhosravimanesh experimentalstudyoftheeffectofcoolinglubricatingfluidsonpenetrationrateinahardandsoftrockdrillingprocess AT masoudcheraghiseifabad experimentalstudyoftheeffectofcoolinglubricatingfluidsonpenetrationrateinahardandsoftrockdrillingprocess AT rezamikaeil experimentalstudyoftheeffectofcoolinglubricatingfluidsonpenetrationrateinahardandsoftrockdrillingprocess AT rahebbagherpour experimentalstudyoftheeffectofcoolinglubricatingfluidsonpenetrationrateinahardandsoftrockdrillingprocess
_version_	1718371042761637888

EXPERIMENTAL STUDY OF THE EFFECT OF COOLING LUBRICATING FLUIDS ON PENETRATION RATE IN A HARD AND SOFT ROCK DRILLING PROCESS

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