Downhole pipe selection and arrangement for acoustic drillstring telemetry

Drillstring acoustic telemetry is an effective transmission method to retrieve downhole data. In this paper, finite-difference algorithm is used for acoustic wave propagation prediction along the drillstring. An impulse excitation signal of time duration 30.87 μs is transmitted from the downhole and...

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Main Authors: Kumar, L. S., Han, W. K., Lee, Y. H., Guan, Yong Liang, Sun, Sheng, Arasu, Muthukumaraswamy Annamalai, Je, Minkyu
Other Authors: School of Electrical and Electronic Engineering
Format: Conference or Workshop Item
Language:English
Published: 2013
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Online Access:https://hdl.handle.net/10356/98960
http://hdl.handle.net/10220/12732
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-989602020-03-07T13:24:49Z Downhole pipe selection and arrangement for acoustic drillstring telemetry Kumar, L. S. Han, W. K. Lee, Y. H. Guan, Yong Liang Sun, Sheng Arasu, Muthukumaraswamy Annamalai Je, Minkyu School of Electrical and Electronic Engineering IEEE Conference on Industrial Electronics and Applications (7th : 2012 : Singapore) DRNTU::Engineering::Electrical and electronic engineering Drillstring acoustic telemetry is an effective transmission method to retrieve downhole data. In this paper, finite-difference algorithm is used for acoustic wave propagation prediction along the drillstring. An impulse excitation signal of time duration 30.87 μs is transmitted from the downhole and the wave displacement at the receiver is found using finite-difference algorithm. The resultant impulse and frequency responses are plotted and compared for different segments. It is found that the selection and arrangement of downhole pipes plays a vital role in improving the transmission efficiency of extensional waves transmitted through the drillstring for acoustic telemetry, particularly in the high-frequency bands. In order to find the optimal pipe arrangement order, 4 segments of drillstring with lengths d11to d14 (in increasing length between 9.3434 m and 9.8185 m) are arranged in all 24possible permutations. The energy of the frequency response is found for each of the six pass bands for the twenty four arrangements. It is concluded from the findings that placing the shortest pipe at the downhole first, followed by the longest pipe, then the next longest pipe and so on, produces the best possible telemetry performance in terms of optimal acoustic energy transfer. 2013-08-01T03:07:06Z 2019-12-06T20:01:32Z 2013-08-01T03:07:06Z 2019-12-06T20:01:32Z 2011 2011 Conference Paper https://hdl.handle.net/10356/98960 http://hdl.handle.net/10220/12732 10.1109/ICIEA.2012.6360968 en
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Electrical and electronic engineering
spellingShingle DRNTU::Engineering::Electrical and electronic engineering
Kumar, L. S.
Han, W. K.
Lee, Y. H.
Guan, Yong Liang
Sun, Sheng
Arasu, Muthukumaraswamy Annamalai
Je, Minkyu
Downhole pipe selection and arrangement for acoustic drillstring telemetry
description Drillstring acoustic telemetry is an effective transmission method to retrieve downhole data. In this paper, finite-difference algorithm is used for acoustic wave propagation prediction along the drillstring. An impulse excitation signal of time duration 30.87 μs is transmitted from the downhole and the wave displacement at the receiver is found using finite-difference algorithm. The resultant impulse and frequency responses are plotted and compared for different segments. It is found that the selection and arrangement of downhole pipes plays a vital role in improving the transmission efficiency of extensional waves transmitted through the drillstring for acoustic telemetry, particularly in the high-frequency bands. In order to find the optimal pipe arrangement order, 4 segments of drillstring with lengths d11to d14 (in increasing length between 9.3434 m and 9.8185 m) are arranged in all 24possible permutations. The energy of the frequency response is found for each of the six pass bands for the twenty four arrangements. It is concluded from the findings that placing the shortest pipe at the downhole first, followed by the longest pipe, then the next longest pipe and so on, produces the best possible telemetry performance in terms of optimal acoustic energy transfer.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Kumar, L. S.
Han, W. K.
Lee, Y. H.
Guan, Yong Liang
Sun, Sheng
Arasu, Muthukumaraswamy Annamalai
Je, Minkyu
format Conference or Workshop Item
author Kumar, L. S.
Han, W. K.
Lee, Y. H.
Guan, Yong Liang
Sun, Sheng
Arasu, Muthukumaraswamy Annamalai
Je, Minkyu
author_sort Kumar, L. S.
title Downhole pipe selection and arrangement for acoustic drillstring telemetry
title_short Downhole pipe selection and arrangement for acoustic drillstring telemetry
title_full Downhole pipe selection and arrangement for acoustic drillstring telemetry
title_fullStr Downhole pipe selection and arrangement for acoustic drillstring telemetry
title_full_unstemmed Downhole pipe selection and arrangement for acoustic drillstring telemetry
title_sort downhole pipe selection and arrangement for acoustic drillstring telemetry
publishDate 2013
url https://hdl.handle.net/10356/98960
http://hdl.handle.net/10220/12732
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