Volume 8, Issue 11 (November 2021), Pages: 96-103

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 Original Research Paper

 Title: Optimal drill string design for acoustic borehole communication

 Author(s): Ali H. Alenezi *

 Affiliation(s):

 Department of Electrical Engineering, Northern Border University, Arar, Saudi Arabia

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 * Corresponding Author. 

  Corresponding author's ORCID profile: https://orcid.org/0000-0002-8469-880X

 Digital Object Identifier: 

 https://doi.org/10.21833/ijaas.2021.11.013

 Abstract:

The acoustic telemetry used the drill string as a communication channel, which allows data transfer without interrupting drilling operations. This technology suffers from stop-bands that reduce the feasible bands for transmission up to 60 percent. The stop bands come due to the structure of the drill string constructed from pipes and tool joints. In this paper, we optimized the design of the drill string main components, which are pipes and tool-joints lengths, with an aim to increase the pass-bands total bandwidth. Using the verified drill string channel model, we proved that, with optimal lengths of pipes and tool joints, we can make the whole drill string channel bandwidth available for transmission. We also investigated the effect of small deviation from the optimal lengths on the channel transmission bands. The results showed that an increase of more than 138 percent in the available transmission bandwidths compared with standard drill string dimensions. 

 © 2021 The Authors. Published by IASE.

 This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

 Keywords: Drill string, Borehole communication, Acoustic telemetry, Channel model, Transfer matrix method

 Article History: Received 4 May 2021, Received in revised form 8 August 2021, Accepted 5 September 2021

 Acknowledgment 

No Acknowledgment.

 Compliance with ethical standards

 Conflict of interest: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

 Citation:

 Alenezi AH (2021). Optimal drill string design for acoustic borehole communication. International Journal of Advanced and Applied Sciences, 8(11): 96-103

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 Figures

 Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8 

 Tables

 Table 1       

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