Failure analysis on the drillpipe due to the twist-off

This thesis reports on the design and analysis for failure at three different drill pipes. When drilling boreholes, for example in the Oil & Gas industry, a hole is drilled into the ground which can be several kilometers long. One of main type of problem that can occur while drilling is the torq...

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Main Author:	Mohd Iqbal, Mohd Zolkepeli
Format:	Undergraduates Project Papers
Language:	English English
Published:	2008
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/344/ http://umpir.ump.edu.my/id/eprint/344/ http://umpir.ump.edu.my/id/eprint/344/1/ http://umpir.ump.edu.my/id/eprint/344/2/Mohd.Iqbal_Mohd._Zolkepeli.pdf

id	oai:umpir.ump.edu.my:344
recordtype	eprints
spelling	oai:umpir.ump.edu.my:3442015-03-03T06:16:39Z http://umpir.ump.edu.my/id/eprint/344/ Failure analysis on the drillpipe due to the twist-off Mohd Iqbal, Mohd Zolkepeli TJ Mechanical engineering and machinery This thesis reports on the design and analysis for failure at three different drill pipes. When drilling boreholes, for example in the Oil & Gas industry, a hole is drilled into the ground which can be several kilometers long. One of main type of problem that can occur while drilling is the torque on the drill pipe can cause it to break (called twist-off). This problem results in drilling delays. Twist-offs also usually results in loss of expensive equipment. Therefore, ALGOR software has been use as the FEA tool to do the analysis to reduce this problem. Six different values of torque range from 2000 N.m to 3000 N.m is applied to the end of the pipe stand which is consist of three assembly of pipes. The materials of the pipe have been chosen are AISI 1010, ASTM A36 and AISI 4150 steels that have different mechanical properties the see the differences. The test results show that AISI 4150 is the most suitable material to use which gives 2800 N.m torque value before it starts to fail. Meanwhile, a constant pattern of failure has determined for these three pipes at the same location of the second engaged thread of the pipe assembly, between the male and female thread at the joint. For improvement, to see the differences from another point of view, the analysis for this drill pipe design is suggested to do with different thickness and length in order to analyze how much the maximum allowable torque value can be applied to the pipe before it starts to fail. 2008-11 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/344/1/ application/pdf en http://umpir.ump.edu.my/id/eprint/344/2/Mohd.Iqbal_Mohd._Zolkepeli.pdf Mohd Iqbal, Mohd Zolkepeli (2008) Failure analysis on the drillpipe due to the twist-off. Faculty of Mechanical Engineering, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:40748&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Mohd Iqbal, Mohd Zolkepeli Failure analysis on the drillpipe due to the twist-off
description	This thesis reports on the design and analysis for failure at three different drill pipes. When drilling boreholes, for example in the Oil & Gas industry, a hole is drilled into the ground which can be several kilometers long. One of main type of problem that can occur while drilling is the torque on the drill pipe can cause it to break (called twist-off). This problem results in drilling delays. Twist-offs also usually results in loss of expensive equipment. Therefore, ALGOR software has been use as the FEA tool to do the analysis to reduce this problem. Six different values of torque range from 2000 N.m to 3000 N.m is applied to the end of the pipe stand which is consist of three assembly of pipes. The materials of the pipe have been chosen are AISI 1010, ASTM A36 and AISI 4150 steels that have different mechanical properties the see the differences. The test results show that AISI 4150 is the most suitable material to use which gives 2800 N.m torque value before it starts to fail. Meanwhile, a constant pattern of failure has determined for these three pipes at the same location of the second engaged thread of the pipe assembly, between the male and female thread at the joint. For improvement, to see the differences from another point of view, the analysis for this drill pipe design is suggested to do with different thickness and length in order to analyze how much the maximum allowable torque value can be applied to the pipe before it starts to fail.
format	Undergraduates Project Papers
author	Mohd Iqbal, Mohd Zolkepeli
author_facet	Mohd Iqbal, Mohd Zolkepeli
author_sort	Mohd Iqbal, Mohd Zolkepeli
title	Failure analysis on the drillpipe due to the twist-off
title_short	Failure analysis on the drillpipe due to the twist-off
title_full	Failure analysis on the drillpipe due to the twist-off
title_fullStr	Failure analysis on the drillpipe due to the twist-off
title_full_unstemmed	Failure analysis on the drillpipe due to the twist-off
title_sort	failure analysis on the drillpipe due to the twist-off
publishDate	2008
url	http://umpir.ump.edu.my/id/eprint/344/ http://umpir.ump.edu.my/id/eprint/344/ http://umpir.ump.edu.my/id/eprint/344/1/ http://umpir.ump.edu.my/id/eprint/344/2/Mohd.Iqbal_Mohd._Zolkepeli.pdf
first_indexed	2018-09-07T00:14:57Z
last_indexed	2018-09-07T00:14:57Z
_version_	1610905600724566016

Failure analysis on the drillpipe due to the twist-off

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