Optimization and Application of Wax Removal Technology for Fixed Tubing String in Offshore Wells

Weigang Du; Zhenli Pang; Zhi Cao; Guoqiang Xu

doi:doi:10.11648/j.ajee.20241202.11

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Optimization and Application of Wax Removal Technology for Fixed Tubing String in Offshore Wells

Weigang Du^*

, Zhenli Pang, Zhi Cao, Guoqiang Xu

Published in American Journal of Energy Engineering (Volume 12, Issue 2)

Received: 18 March 2024 Accepted: 22 April 2024 Published: 29 April 2024

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Abstract

This study focuses on the selection and application of wax removal techniques tailored for fixed tubing columns in offshore wells that have been obstructed by wax deposits. Initially, the paper delves into the importance of well decommissioning and examines prevalent decommissioning techniques, outlining their respective advantages and limitations. Subsequently, three distinct unblocking technologies are proposed, tailored to address different causes and scenarios of well clogging: physical plugging removal technology, chemical treatment technology, and mechanical unblocking technology. Each technology is thoroughly analyzed, discussing their applicable scopes, operational procedures, equipment and anticipated effectiveness in removing blockages. To validate the feasibility and practicality of these proposed unblocking methods, an actual offshore well case study is conducted. The results demonstrate that thermal nitrogen wax removal technology emerges as the most effective approach, necessitating further optimization of its application. The paper then details the oil-filed implementation of this technology, including methods for generating hot nitrogen and its subsequent application. Following the implementation, significant improvements in wax removal and unblocking are observed, attesting to the technology's effectiveness. The findings of this study offer valuable insights and practical guidance for addressing wax blockage issues in fixed tubing columns of offshore oil wells. By providing a comprehensive analysis of different unblocking techniques and their application in oil-filed, this paper contributes to enhancing the efficiency and reliability of offshore oil production operations.

Published in	American Journal of Energy Engineering (Volume 12, Issue 2)
DOI	10.11648/j.ajee.20241202.11
Page(s)	26-31
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Waxing, Unblocking, Hot Nitrogen Gas Artificial, Cable-through Packer, Fluid Drainage, Field Applications, Fixed Tubing String

References

[1]	YAN Fangluo. Experimental effect and evaluation of gas lift wells spiked with clearing and anti-waxing agent [J]. Petroleum Engineering Construction, 2016, (1): 60-62. https://doi.org/10.3969/j.issn.1001-2206.2016.01.015
[2]	ZHANG Ruitian. Wax cleaning and wax prevention method for oil wells at the late stage of oilfield development [J]. Chemical Engineering and Equipment, 2023(04): 87-88+103. https://doi.org/10.19566/j.cnki.cn35-1285/tq.2023.04.062
[3]	MAO Zhe. Research on oil well waxing mechanism and wax cleaning and preventing method [J]. China Chemical Trade, 2017, (35): 84. https://doi.org/10.3969/j.issn.1674-5167.2017.35.075
[4]	Zhao Hongliang. Research and application of wax cleaning technology [J]. China Petroleum and Chemical Standards and Quality, 2011, (9): 131, 118. https://doi.org/10.3969/j.issn.1673-4076.2011.09.098
[5]	WANG Chong. Experimental study on optimization of ultrasonic wax prevention parameters in XL oilfield [D]. China University of Petroleum (East China), 2017. https://doi.org/10.27644/d.cnki.gsydu.2017.000269
[6]	Rong Guanghui, Ouyang Shikun, Wang Xiaofei et al. Application of electrothermal wax cleaning technology for oil casing of well group in Heshui oilfield [J]. Drilling and Mining Technology, 2022, 45(05): 90-94. https://doi.org/10.3969/J.ISSN.1006-768X.2022.05.16
[7]	Duan Yuming, Wang Faxin, Lei Tengjiao et al. Design of continuous plunger gas lift process and its application in Tarim condensate gas field [J]. Drilling Process, 2020, 43(01): 35-37+9. https://doi.org/CNKI:SUN:ZCGY.0.2020-01-012
[8]	Lei Y. Development and application of gas plunger gas lift completion tubing column in this well [J]. Petroleum Machinery, 2007(06): 61-63. https://doi.org/10.3969/j.issn.1001-4578.2007.06.021
[9]	Guan Bin. Study on the application of clearing and anti-waxing process in the spontaneous blowout stage of Fulpai XX well [J]. Journal of Jianghan Petroleum Workers University, 2022, 35(03): 43-45. https://doi.org/10.3969/j.issn 1009-301X. 2022.03.015
[10]	JING Guolin, BAO Di, WANG Jingyi et al. Research progress of oil well wax cleaning technology [J]. Energy and Chemical Industry, 2016, 37(03): 38-42. https://doi.org/10.3969/j.issn.1006-7906.2016.03.008
[11]	He Yinda. Application of continuous tubing hot washing and unblocking wax removal process in YM17-1 well [J]. Oil and Gas Well Testing, 2008, (3): 50-51. https://doi.org/10.3969/j.issn.1004-4388.2008.03.021
[12]	WU Huaxiao, LIU Yigang, SHANG Baobing, et al. Application of oil well cleaning and anti-waxing process in Bohai Oilfield [J]. Journal of Changjiang University (Self-contained Edition), 2016, (17): 67-70. https://doi.org/CNKI:SUN:CJDL.0.2016-17-014
[13]	Wang Tiegang. Application of wax clearing and unblocking in heating furnace of JX1-1B4 well [J]. Fine and Specialty Chemicals, 2017, (12): 31-34. https://doi.org/10.19482/j.cn11-3237.2017.12.08
[14]	Zhou Wendong. Application of membrane nitrogen gas lift drainage process in low permeability oil and gas reservoir extraction [J]. Journal of Jianghan Petroleum Staff University, 2016, (1): 41-42, 50. https://doi.org/10.3969/j.issn.1009-301X.2016.01.013
[15]	Zhou Peng. Analysis of the principle and application of oilfield membrane nitrogen injection device [J]. China chemical trade, 2015, (11): 173-173. https://doi.org/10.3969/j.issn.1674-5167.2015.11.163

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APA Style

Du, W., Pang, Z., Cao, Z., Xu, G. (2024). Optimization and Application of Wax Removal Technology for Fixed Tubing String in Offshore Wells. American Journal of Energy Engineering, 12(2), 26-31. https://doi.org/10.11648/j.ajee.20241202.11

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ACS Style

Du, W.; Pang, Z.; Cao, Z.; Xu, G. Optimization and Application of Wax Removal Technology for Fixed Tubing String in Offshore Wells. Am. J. Energy Eng. 2024, 12(2), 26-31. doi: 10.11648/j.ajee.20241202.11

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AMA Style

Du W, Pang Z, Cao Z, Xu G. Optimization and Application of Wax Removal Technology for Fixed Tubing String in Offshore Wells. Am J Energy Eng. 2024;12(2):26-31. doi: 10.11648/j.ajee.20241202.11

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@article{10.11648/j.ajee.20241202.11,
  author = {Weigang Du and Zhenli Pang and Zhi Cao and Guoqiang Xu},
  title = {Optimization and Application of Wax Removal Technology for Fixed Tubing String in Offshore Wells
},
  journal = {American Journal of Energy Engineering},
  volume = {12},
  number = {2},
  pages = {26-31},
  doi = {10.11648/j.ajee.20241202.11},
  url = {https://doi.org/10.11648/j.ajee.20241202.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajee.20241202.11},
  abstract = {This study focuses on the selection and application of wax removal techniques tailored for fixed tubing columns in offshore wells that have been obstructed by wax deposits. Initially, the paper delves into the importance of well decommissioning and examines prevalent decommissioning techniques, outlining their respective advantages and limitations. Subsequently, three distinct unblocking technologies are proposed, tailored to address different causes and scenarios of well clogging: physical plugging removal technology, chemical treatment technology, and mechanical unblocking technology. Each technology is thoroughly analyzed, discussing their applicable scopes, operational procedures, equipment and anticipated effectiveness in removing blockages. To validate the feasibility and practicality of these proposed unblocking methods, an actual offshore well case study is conducted. The results demonstrate that thermal nitrogen wax removal technology emerges as the most effective approach, necessitating further optimization of its application. The paper then details the oil-filed implementation of this technology, including methods for generating hot nitrogen and its subsequent application. Following the implementation, significant improvements in wax removal and unblocking are observed, attesting to the technology's effectiveness. The findings of this study offer valuable insights and practical guidance for addressing wax blockage issues in fixed tubing columns of offshore oil wells. By providing a comprehensive analysis of different unblocking techniques and their application in oil-filed, this paper contributes to enhancing the efficiency and reliability of offshore oil production operations.
},
 year = {2024}
}

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TY  - JOUR
T1  - Optimization and Application of Wax Removal Technology for Fixed Tubing String in Offshore Wells

AU  - Weigang Du
AU  - Zhenli Pang
AU  - Zhi Cao
AU  - Guoqiang Xu
Y1  - 2024/04/29
PY  - 2024
N1  - https://doi.org/10.11648/j.ajee.20241202.11
DO  - 10.11648/j.ajee.20241202.11
T2  - American Journal of Energy Engineering
JF  - American Journal of Energy Engineering
JO  - American Journal of Energy Engineering
SP  - 26
EP  - 31
PB  - Science Publishing Group
SN  - 2329-163X
UR  - https://doi.org/10.11648/j.ajee.20241202.11
AB  - This study focuses on the selection and application of wax removal techniques tailored for fixed tubing columns in offshore wells that have been obstructed by wax deposits. Initially, the paper delves into the importance of well decommissioning and examines prevalent decommissioning techniques, outlining their respective advantages and limitations. Subsequently, three distinct unblocking technologies are proposed, tailored to address different causes and scenarios of well clogging: physical plugging removal technology, chemical treatment technology, and mechanical unblocking technology. Each technology is thoroughly analyzed, discussing their applicable scopes, operational procedures, equipment and anticipated effectiveness in removing blockages. To validate the feasibility and practicality of these proposed unblocking methods, an actual offshore well case study is conducted. The results demonstrate that thermal nitrogen wax removal technology emerges as the most effective approach, necessitating further optimization of its application. The paper then details the oil-filed implementation of this technology, including methods for generating hot nitrogen and its subsequent application. Following the implementation, significant improvements in wax removal and unblocking are observed, attesting to the technology's effectiveness. The findings of this study offer valuable insights and practical guidance for addressing wax blockage issues in fixed tubing columns of offshore oil wells. By providing a comprehensive analysis of different unblocking techniques and their application in oil-filed, this paper contributes to enhancing the efficiency and reliability of offshore oil production operations.

VL  - 12
IS  - 2
ER  -

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Author Information

Weigang Du

China National Petroleum Corporation Offshore Engineering Company Limited Tianjin Branch, Tianjin, China

Contact Email

http://orcid.org/0009-0008-5388-1194
Zhenli Pang

China National Petroleum Corporation Offshore Engineering Company Limited Tianjin Branch, Tianjin, China

Contact Email
Zhi Cao

China National Petroleum Corporation Offshore Engineering Company Limited Tianjin Branch, Tianjin, China

Contact Email
Guoqiang Xu

China National Petroleum Corporation Offshore Engineering Company Limited Tianjin Branch, Tianjin, China

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Plain Text BibTeX RIS

APA Style

Du, W., Pang, Z., Cao, Z., Xu, G. (2024). Optimization and Application of Wax Removal Technology for Fixed Tubing String in Offshore Wells. American Journal of Energy Engineering, 12(2), 26-31. https://doi.org/10.11648/j.ajee.20241202.11

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ACS Style

Du, W.; Pang, Z.; Cao, Z.; Xu, G. Optimization and Application of Wax Removal Technology for Fixed Tubing String in Offshore Wells. Am. J. Energy Eng. 2024, 12(2), 26-31. doi: 10.11648/j.ajee.20241202.11

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AMA Style

Du W, Pang Z, Cao Z, Xu G. Optimization and Application of Wax Removal Technology for Fixed Tubing String in Offshore Wells. Am J Energy Eng. 2024;12(2):26-31. doi: 10.11648/j.ajee.20241202.11

Copy | Download

@article{10.11648/j.ajee.20241202.11,
  author = {Weigang Du and Zhenli Pang and Zhi Cao and Guoqiang Xu},
  title = {Optimization and Application of Wax Removal Technology for Fixed Tubing String in Offshore Wells
},
  journal = {American Journal of Energy Engineering},
  volume = {12},
  number = {2},
  pages = {26-31},
  doi = {10.11648/j.ajee.20241202.11},
  url = {https://doi.org/10.11648/j.ajee.20241202.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajee.20241202.11},
  abstract = {This study focuses on the selection and application of wax removal techniques tailored for fixed tubing columns in offshore wells that have been obstructed by wax deposits. Initially, the paper delves into the importance of well decommissioning and examines prevalent decommissioning techniques, outlining their respective advantages and limitations. Subsequently, three distinct unblocking technologies are proposed, tailored to address different causes and scenarios of well clogging: physical plugging removal technology, chemical treatment technology, and mechanical unblocking technology. Each technology is thoroughly analyzed, discussing their applicable scopes, operational procedures, equipment and anticipated effectiveness in removing blockages. To validate the feasibility and practicality of these proposed unblocking methods, an actual offshore well case study is conducted. The results demonstrate that thermal nitrogen wax removal technology emerges as the most effective approach, necessitating further optimization of its application. The paper then details the oil-filed implementation of this technology, including methods for generating hot nitrogen and its subsequent application. Following the implementation, significant improvements in wax removal and unblocking are observed, attesting to the technology's effectiveness. The findings of this study offer valuable insights and practical guidance for addressing wax blockage issues in fixed tubing columns of offshore oil wells. By providing a comprehensive analysis of different unblocking techniques and their application in oil-filed, this paper contributes to enhancing the efficiency and reliability of offshore oil production operations.
},
 year = {2024}
}

Copy | Download

TY  - JOUR
T1  - Optimization and Application of Wax Removal Technology for Fixed Tubing String in Offshore Wells

AU  - Weigang Du
AU  - Zhenli Pang
AU  - Zhi Cao
AU  - Guoqiang Xu
Y1  - 2024/04/29
PY  - 2024
N1  - https://doi.org/10.11648/j.ajee.20241202.11
DO  - 10.11648/j.ajee.20241202.11
T2  - American Journal of Energy Engineering
JF  - American Journal of Energy Engineering
JO  - American Journal of Energy Engineering
SP  - 26
EP  - 31
PB  - Science Publishing Group
SN  - 2329-163X
UR  - https://doi.org/10.11648/j.ajee.20241202.11
AB  - This study focuses on the selection and application of wax removal techniques tailored for fixed tubing columns in offshore wells that have been obstructed by wax deposits. Initially, the paper delves into the importance of well decommissioning and examines prevalent decommissioning techniques, outlining their respective advantages and limitations. Subsequently, three distinct unblocking technologies are proposed, tailored to address different causes and scenarios of well clogging: physical plugging removal technology, chemical treatment technology, and mechanical unblocking technology. Each technology is thoroughly analyzed, discussing their applicable scopes, operational procedures, equipment and anticipated effectiveness in removing blockages. To validate the feasibility and practicality of these proposed unblocking methods, an actual offshore well case study is conducted. The results demonstrate that thermal nitrogen wax removal technology emerges as the most effective approach, necessitating further optimization of its application. The paper then details the oil-filed implementation of this technology, including methods for generating hot nitrogen and its subsequent application. Following the implementation, significant improvements in wax removal and unblocking are observed, attesting to the technology's effectiveness. The findings of this study offer valuable insights and practical guidance for addressing wax blockage issues in fixed tubing columns of offshore oil wells. By providing a comprehensive analysis of different unblocking techniques and their application in oil-filed, this paper contributes to enhancing the efficiency and reliability of offshore oil production operations.

VL  - 12
IS  - 2
ER  -

Copy | Download