Research of New Demulsifier in Bohai Oilfield

Ren Yi; Dai Hongcheng; Du Dawei; Cheng Yan; Zhang Liya

doi:doi:10.11648/j.ogce.20210903.12

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Research of New Demulsifier in Bohai Oilfield

Ren Yi, Dai Hongcheng, Du Dawei, Cheng Yan, Zhang Liya

Published in International Journal of Oil, Gas and Coal Engineering (Volume 9, Issue 3)

Received: 7 July 2021 Accepted: 22 July 2021 Published: 2 August 2021

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Abstract

The content of asphalt in an EOR oilfield of Bohai is high, reaching more than 30%, and the content of phenol and naphthenic acid is also high, resulting in high acid value of crude oil. The water content is about 85% - 95%, and it is in the later stage of mining. Because hydrophobically associating PAM is used as oil displacement agent in the platform, it is difficult to degrade and seriously affects the demulsifier. The oil-water interfacial film formed by polymer, gum and asphalt is very firm, which increases the difficulty of dehydration. There is no ideal product in the selection and application of reverse demulsifier for heavy crude oil with high content of asphalt, high water content and high acid value. In this experiment, triethanolamine was selected as the starting agent from the aspect of branching and introducing nitrogen element, and water-soluble triblock polyether was synthesized according to the ratio of PO: EO: PO=2:7:6, and then crosslinked with 3% (relative polyether mass) epichlorohydrin. In the process, the crosslinking temperature was 80°C, the reaction time was 5h, and potassium hydroxide solution was used as catalyst. At last, the demulsifier product with good effect of clear water was made, and good effect was obtained in field application.

Published in	International Journal of Oil, Gas and Coal Engineering (Volume 9, Issue 3)
DOI	10.11648/j.ogce.20210903.12
Page(s)	42-45
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), 2021. Published by Science Publishing Group

Keywords

Triethanolamine, Demulsifier, Epichlorohydrin, Polyether, Heavy Oil

References

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[3]	LIU Liping. Research, application and development of demulsifier for crude oil [J]. Research and Development, 2017, 33 (11): 168-169.
[4]	WU Lichun, LIU Songtao, LIU Xuejuan. Current situation of the development of crude oil demulsifier [J]. Detergent & Cosmetics, 2008, 311 (11): 8-10.
[5]	CHENG Yunxia, HE San, MENG Di et al. Study on dehydration technology of heavy oil containing polymer in SZ36-1 oilfield [J]. Petrochemical industry application, 2013, 32 (10): 77-80.
[6]	ZHENG Jilong, SONG Zhixue, CHEN Ping et al. Selection and performance evaluation on foam systems for nitrogen foam flooding in oilfield SZ36-1 [J]. Advances in Fine Petrochemicals, 2013, 14 (4): 34-36.
[7]	TAN Guorong, WANG Jinben. Preparation and performance of demulsifier TKQ-2 for crude oil emulsion by polymer flooding [J]. Chemical Engineering of Oil & Gas, 2008, 37 (1): 56-58.
[8]	XU Hui, WEI Qing, ZHANG Lifeng et al. Synthesis and properties of hyperbranched polymer reverse demulsifier [J]. Specialty Petrochemicals, 2019, 36 (3): 46-49.
[9]	WANG Zhong, WU Weilong, WANG Mingxian et al. Synthesis and properties of acrylic modified polyether crude oil demusifier [J]. Journal of Shihezi Universithy, 2018, 36 (2): 183-188.
[10]	WANG Zhong, LI Danyang. Synthesis and properties of silicone modified polyether OF-125 crude oil demulsifier [J]. Journal of Shihezi Universithy, 2019, 37 (3): 273-279.
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[15]	SY/T 5796-93 «Evaluation method of flocculant» [S]. China National Petroleum Corporation, 1994. 3.

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APA Style

Ren Yi, Dai Hongcheng, Du Dawei, Cheng Yan, Zhang Liya. (2021). Research of New Demulsifier in Bohai Oilfield. International Journal of Oil, Gas and Coal Engineering, 9(3), 42-45. https://doi.org/10.11648/j.ogce.20210903.12

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ACS Style

Ren Yi; Dai Hongcheng; Du Dawei; Cheng Yan; Zhang Liya. Research of New Demulsifier in Bohai Oilfield. Int. J. Oil Gas Coal Eng. 2021, 9(3), 42-45. doi: 10.11648/j.ogce.20210903.12

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AMA Style

Ren Yi, Dai Hongcheng, Du Dawei, Cheng Yan, Zhang Liya. Research of New Demulsifier in Bohai Oilfield. Int J Oil Gas Coal Eng. 2021;9(3):42-45. doi: 10.11648/j.ogce.20210903.12

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@article{10.11648/j.ogce.20210903.12,
  author = {Ren Yi and Dai Hongcheng and Du Dawei and Cheng Yan and Zhang Liya},
  title = {Research of New Demulsifier in Bohai Oilfield},
  journal = {International Journal of Oil, Gas and Coal Engineering},
  volume = {9},
  number = {3},
  pages = {42-45},
  doi = {10.11648/j.ogce.20210903.12},
  url = {https://doi.org/10.11648/j.ogce.20210903.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ogce.20210903.12},
  abstract = {The content of asphalt in an EOR oilfield of Bohai is high, reaching more than 30%, and the content of phenol and naphthenic acid is also high, resulting in high acid value of crude oil. The water content is about 85% - 95%, and it is in the later stage of mining. Because hydrophobically associating PAM is used as oil displacement agent in the platform, it is difficult to degrade and seriously affects the demulsifier. The oil-water interfacial film formed by polymer, gum and asphalt is very firm, which increases the difficulty of dehydration. There is no ideal product in the selection and application of reverse demulsifier for heavy crude oil with high content of asphalt, high water content and high acid value. In this experiment, triethanolamine was selected as the starting agent from the aspect of branching and introducing nitrogen element, and water-soluble triblock polyether was synthesized according to the ratio of PO: EO: PO=2:7:6, and then crosslinked with 3% (relative polyether mass) epichlorohydrin. In the process, the crosslinking temperature was 80°C, the reaction time was 5h, and potassium hydroxide solution was used as catalyst. At last, the demulsifier product with good effect of clear water was made, and good effect was obtained in field application.},
 year = {2021}
}

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TY  - JOUR
T1  - Research of New Demulsifier in Bohai Oilfield
AU  - Ren Yi
AU  - Dai Hongcheng
AU  - Du Dawei
AU  - Cheng Yan
AU  - Zhang Liya
Y1  - 2021/08/02
PY  - 2021
N1  - https://doi.org/10.11648/j.ogce.20210903.12
DO  - 10.11648/j.ogce.20210903.12
T2  - International Journal of Oil, Gas and Coal Engineering
JF  - International Journal of Oil, Gas and Coal Engineering
JO  - International Journal of Oil, Gas and Coal Engineering
SP  - 42
EP  - 45
PB  - Science Publishing Group
SN  - 2376-7677
UR  - https://doi.org/10.11648/j.ogce.20210903.12
AB  - The content of asphalt in an EOR oilfield of Bohai is high, reaching more than 30%, and the content of phenol and naphthenic acid is also high, resulting in high acid value of crude oil. The water content is about 85% - 95%, and it is in the later stage of mining. Because hydrophobically associating PAM is used as oil displacement agent in the platform, it is difficult to degrade and seriously affects the demulsifier. The oil-water interfacial film formed by polymer, gum and asphalt is very firm, which increases the difficulty of dehydration. There is no ideal product in the selection and application of reverse demulsifier for heavy crude oil with high content of asphalt, high water content and high acid value. In this experiment, triethanolamine was selected as the starting agent from the aspect of branching and introducing nitrogen element, and water-soluble triblock polyether was synthesized according to the ratio of PO: EO: PO=2:7:6, and then crosslinked with 3% (relative polyether mass) epichlorohydrin. In the process, the crosslinking temperature was 80°C, the reaction time was 5h, and potassium hydroxide solution was used as catalyst. At last, the demulsifier product with good effect of clear water was made, and good effect was obtained in field application.
VL  - 9
IS  - 3
ER  -

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Author Information

Ren Yi

CNOOC Energy Technology-Drilling & Production Co., Tianjin, China
Dai Hongcheng

CNOOC Energy Technology-Drilling & Production Co., Tianjin, China
Du Dawei

CNOOC Energy Technology-Drilling & Production Co., Tianjin, China
Cheng Yan

CNOOC Energy Technology-Drilling & Production Co., Tianjin, China
Zhang Liya

CNOOC Energy Technology-Drilling & Production Co., Tianjin, China

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Plain Text BibTeX RIS

APA Style

Ren Yi, Dai Hongcheng, Du Dawei, Cheng Yan, Zhang Liya. (2021). Research of New Demulsifier in Bohai Oilfield. International Journal of Oil, Gas and Coal Engineering, 9(3), 42-45. https://doi.org/10.11648/j.ogce.20210903.12

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ACS Style

Ren Yi; Dai Hongcheng; Du Dawei; Cheng Yan; Zhang Liya. Research of New Demulsifier in Bohai Oilfield. Int. J. Oil Gas Coal Eng. 2021, 9(3), 42-45. doi: 10.11648/j.ogce.20210903.12

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AMA Style

Ren Yi, Dai Hongcheng, Du Dawei, Cheng Yan, Zhang Liya. Research of New Demulsifier in Bohai Oilfield. Int J Oil Gas Coal Eng. 2021;9(3):42-45. doi: 10.11648/j.ogce.20210903.12

Copy | Download

@article{10.11648/j.ogce.20210903.12,
  author = {Ren Yi and Dai Hongcheng and Du Dawei and Cheng Yan and Zhang Liya},
  title = {Research of New Demulsifier in Bohai Oilfield},
  journal = {International Journal of Oil, Gas and Coal Engineering},
  volume = {9},
  number = {3},
  pages = {42-45},
  doi = {10.11648/j.ogce.20210903.12},
  url = {https://doi.org/10.11648/j.ogce.20210903.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ogce.20210903.12},
  abstract = {The content of asphalt in an EOR oilfield of Bohai is high, reaching more than 30%, and the content of phenol and naphthenic acid is also high, resulting in high acid value of crude oil. The water content is about 85% - 95%, and it is in the later stage of mining. Because hydrophobically associating PAM is used as oil displacement agent in the platform, it is difficult to degrade and seriously affects the demulsifier. The oil-water interfacial film formed by polymer, gum and asphalt is very firm, which increases the difficulty of dehydration. There is no ideal product in the selection and application of reverse demulsifier for heavy crude oil with high content of asphalt, high water content and high acid value. In this experiment, triethanolamine was selected as the starting agent from the aspect of branching and introducing nitrogen element, and water-soluble triblock polyether was synthesized according to the ratio of PO: EO: PO=2:7:6, and then crosslinked with 3% (relative polyether mass) epichlorohydrin. In the process, the crosslinking temperature was 80°C, the reaction time was 5h, and potassium hydroxide solution was used as catalyst. At last, the demulsifier product with good effect of clear water was made, and good effect was obtained in field application.},
 year = {2021}
}

Copy | Download

TY  - JOUR
T1  - Research of New Demulsifier in Bohai Oilfield
AU  - Ren Yi
AU  - Dai Hongcheng
AU  - Du Dawei
AU  - Cheng Yan
AU  - Zhang Liya
Y1  - 2021/08/02
PY  - 2021
N1  - https://doi.org/10.11648/j.ogce.20210903.12
DO  - 10.11648/j.ogce.20210903.12
T2  - International Journal of Oil, Gas and Coal Engineering
JF  - International Journal of Oil, Gas and Coal Engineering
JO  - International Journal of Oil, Gas and Coal Engineering
SP  - 42
EP  - 45
PB  - Science Publishing Group
SN  - 2376-7677
UR  - https://doi.org/10.11648/j.ogce.20210903.12
AB  - The content of asphalt in an EOR oilfield of Bohai is high, reaching more than 30%, and the content of phenol and naphthenic acid is also high, resulting in high acid value of crude oil. The water content is about 85% - 95%, and it is in the later stage of mining. Because hydrophobically associating PAM is used as oil displacement agent in the platform, it is difficult to degrade and seriously affects the demulsifier. The oil-water interfacial film formed by polymer, gum and asphalt is very firm, which increases the difficulty of dehydration. There is no ideal product in the selection and application of reverse demulsifier for heavy crude oil with high content of asphalt, high water content and high acid value. In this experiment, triethanolamine was selected as the starting agent from the aspect of branching and introducing nitrogen element, and water-soluble triblock polyether was synthesized according to the ratio of PO: EO: PO=2:7:6, and then crosslinked with 3% (relative polyether mass) epichlorohydrin. In the process, the crosslinking temperature was 80°C, the reaction time was 5h, and potassium hydroxide solution was used as catalyst. At last, the demulsifier product with good effect of clear water was made, and good effect was obtained in field application.
VL  - 9
IS  - 3
ER  -

Copy | Download