A Method for Identifying the Light Oil Layer and Condensate Gas Layer Based on the Distribution of Heavy Hydrocarbon Components

Wenji Wang

doi:doi:10.11648/j.earth.20231203.13

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A Method for Identifying the Light Oil Layer and Condensate Gas Layer Based on the Distribution of Heavy Hydrocarbon Components

Wenji Wang

Published in Earth Sciences (Volume 12, Issue 3)

Received: 17 May 2023 Accepted: 6 June 2023 Published: 20 June 2023

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Abstract

There are limitations in using traditional gas logging interpretation to identify oil and gas layers containing light oil and heavy gas, and accurate identification techniques are urgently required. We chose the Xihu Sag as an example to demonstrate the method. Large amounts of gas logging data were analyzed and the critical trend lines of heavy hydrocarbon components in the oil and gas layers were established. The results showed obvious differences between the distribution characteristics of the hydrocarbon components of the oil and gas layers. When the gas–oil ratio of the gas layer was higher, the light hydrocarbon content was higher, and the proportion of heavy hydrocarbon components was lower. In contrast, when the gas–oil ratio of the oil layer was lower, the heavy hydrocarbon content was higher, and the proportion of the heavy hydrocarbon component was higher. A hydrocarbon component chart analysis showed that when the hydrocarbon component distribution curve was more concentrated, the heavy hydrocarbon content was lower. The gas and oil layers were distributed within and outside of the critical line. The gas logging interpretation results of 25 wells in the study area showed that the interpretation coincidence rate of the hydrocarbon component distribution method was 89.5%, 10% higher than that of the traditional gas logging method. This method solves the problem of identifying complex fluids to a certain extent and is thus of great significance for reducing the cost of developing oil and gas fields and formulating reasonable developmental strategies.

Published in	Earth Sciences (Volume 12, Issue 3)
DOI	10.11648/j.earth.20231203.13
Page(s)	74-81
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

Xihu Sag, Light Oil, Condensate Gas, Hydrocarbon Components, Critical Line

References

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APA Style

Wenji Wang. (2023). A Method for Identifying the Light Oil Layer and Condensate Gas Layer Based on the Distribution of Heavy Hydrocarbon Components. Earth Sciences, 12(3), 74-81. https://doi.org/10.11648/j.earth.20231203.13

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ACS Style

Wenji Wang. A Method for Identifying the Light Oil Layer and Condensate Gas Layer Based on the Distribution of Heavy Hydrocarbon Components. Earth Sci. 2023, 12(3), 74-81. doi: 10.11648/j.earth.20231203.13

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AMA Style

Wenji Wang. A Method for Identifying the Light Oil Layer and Condensate Gas Layer Based on the Distribution of Heavy Hydrocarbon Components. Earth Sci. 2023;12(3):74-81. doi: 10.11648/j.earth.20231203.13

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@article{10.11648/j.earth.20231203.13,
  author = {Wenji Wang},
  title = {A Method for Identifying the Light Oil Layer and Condensate Gas Layer Based on the Distribution of Heavy Hydrocarbon Components},
  journal = {Earth Sciences},
  volume = {12},
  number = {3},
  pages = {74-81},
  doi = {10.11648/j.earth.20231203.13},
  url = {https://doi.org/10.11648/j.earth.20231203.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20231203.13},
  abstract = {There are limitations in using traditional gas logging interpretation to identify oil and gas layers containing light oil and heavy gas, and accurate identification techniques are urgently required. We chose the Xihu Sag as an example to demonstrate the method. Large amounts of gas logging data were analyzed and the critical trend lines of heavy hydrocarbon components in the oil and gas layers were established. The results showed obvious differences between the distribution characteristics of the hydrocarbon components of the oil and gas layers. When the gas–oil ratio of the gas layer was higher, the light hydrocarbon content was higher, and the proportion of heavy hydrocarbon components was lower. In contrast, when the gas–oil ratio of the oil layer was lower, the heavy hydrocarbon content was higher, and the proportion of the heavy hydrocarbon component was higher. A hydrocarbon component chart analysis showed that when the hydrocarbon component distribution curve was more concentrated, the heavy hydrocarbon content was lower. The gas and oil layers were distributed within and outside of the critical line. The gas logging interpretation results of 25 wells in the study area showed that the interpretation coincidence rate of the hydrocarbon component distribution method was 89.5%, 10% higher than that of the traditional gas logging method. This method solves the problem of identifying complex fluids to a certain extent and is thus of great significance for reducing the cost of developing oil and gas fields and formulating reasonable developmental strategies.},
 year = {2023}
}

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TY  - JOUR
T1  - A Method for Identifying the Light Oil Layer and Condensate Gas Layer Based on the Distribution of Heavy Hydrocarbon Components
AU  - Wenji Wang
Y1  - 2023/06/20
PY  - 2023
N1  - https://doi.org/10.11648/j.earth.20231203.13
DO  - 10.11648/j.earth.20231203.13
T2  - Earth Sciences
JF  - Earth Sciences
JO  - Earth Sciences
SP  - 74
EP  - 81
PB  - Science Publishing Group
SN  - 2328-5982
UR  - https://doi.org/10.11648/j.earth.20231203.13
AB  - There are limitations in using traditional gas logging interpretation to identify oil and gas layers containing light oil and heavy gas, and accurate identification techniques are urgently required. We chose the Xihu Sag as an example to demonstrate the method. Large amounts of gas logging data were analyzed and the critical trend lines of heavy hydrocarbon components in the oil and gas layers were established. The results showed obvious differences between the distribution characteristics of the hydrocarbon components of the oil and gas layers. When the gas–oil ratio of the gas layer was higher, the light hydrocarbon content was higher, and the proportion of heavy hydrocarbon components was lower. In contrast, when the gas–oil ratio of the oil layer was lower, the heavy hydrocarbon content was higher, and the proportion of the heavy hydrocarbon component was higher. A hydrocarbon component chart analysis showed that when the hydrocarbon component distribution curve was more concentrated, the heavy hydrocarbon content was lower. The gas and oil layers were distributed within and outside of the critical line. The gas logging interpretation results of 25 wells in the study area showed that the interpretation coincidence rate of the hydrocarbon component distribution method was 89.5%, 10% higher than that of the traditional gas logging method. This method solves the problem of identifying complex fluids to a certain extent and is thus of great significance for reducing the cost of developing oil and gas fields and formulating reasonable developmental strategies.
VL  - 12
IS  - 3
ER  -

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Author Information

Wenji Wang

Shanghai Branch of China National Offshore Oil Corporation Co. Ltd., Shanghai, China

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Plain Text BibTeX RIS

APA Style

Wenji Wang. (2023). A Method for Identifying the Light Oil Layer and Condensate Gas Layer Based on the Distribution of Heavy Hydrocarbon Components. Earth Sciences, 12(3), 74-81. https://doi.org/10.11648/j.earth.20231203.13

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ACS Style

Wenji Wang. A Method for Identifying the Light Oil Layer and Condensate Gas Layer Based on the Distribution of Heavy Hydrocarbon Components. Earth Sci. 2023, 12(3), 74-81. doi: 10.11648/j.earth.20231203.13

Copy | Download

AMA Style

Wenji Wang. A Method for Identifying the Light Oil Layer and Condensate Gas Layer Based on the Distribution of Heavy Hydrocarbon Components. Earth Sci. 2023;12(3):74-81. doi: 10.11648/j.earth.20231203.13

Copy | Download

@article{10.11648/j.earth.20231203.13,
  author = {Wenji Wang},
  title = {A Method for Identifying the Light Oil Layer and Condensate Gas Layer Based on the Distribution of Heavy Hydrocarbon Components},
  journal = {Earth Sciences},
  volume = {12},
  number = {3},
  pages = {74-81},
  doi = {10.11648/j.earth.20231203.13},
  url = {https://doi.org/10.11648/j.earth.20231203.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20231203.13},
  abstract = {There are limitations in using traditional gas logging interpretation to identify oil and gas layers containing light oil and heavy gas, and accurate identification techniques are urgently required. We chose the Xihu Sag as an example to demonstrate the method. Large amounts of gas logging data were analyzed and the critical trend lines of heavy hydrocarbon components in the oil and gas layers were established. The results showed obvious differences between the distribution characteristics of the hydrocarbon components of the oil and gas layers. When the gas–oil ratio of the gas layer was higher, the light hydrocarbon content was higher, and the proportion of heavy hydrocarbon components was lower. In contrast, when the gas–oil ratio of the oil layer was lower, the heavy hydrocarbon content was higher, and the proportion of the heavy hydrocarbon component was higher. A hydrocarbon component chart analysis showed that when the hydrocarbon component distribution curve was more concentrated, the heavy hydrocarbon content was lower. The gas and oil layers were distributed within and outside of the critical line. The gas logging interpretation results of 25 wells in the study area showed that the interpretation coincidence rate of the hydrocarbon component distribution method was 89.5%, 10% higher than that of the traditional gas logging method. This method solves the problem of identifying complex fluids to a certain extent and is thus of great significance for reducing the cost of developing oil and gas fields and formulating reasonable developmental strategies.},
 year = {2023}
}

Copy | Download

TY  - JOUR
T1  - A Method for Identifying the Light Oil Layer and Condensate Gas Layer Based on the Distribution of Heavy Hydrocarbon Components
AU  - Wenji Wang
Y1  - 2023/06/20
PY  - 2023
N1  - https://doi.org/10.11648/j.earth.20231203.13
DO  - 10.11648/j.earth.20231203.13
T2  - Earth Sciences
JF  - Earth Sciences
JO  - Earth Sciences
SP  - 74
EP  - 81
PB  - Science Publishing Group
SN  - 2328-5982
UR  - https://doi.org/10.11648/j.earth.20231203.13
AB  - There are limitations in using traditional gas logging interpretation to identify oil and gas layers containing light oil and heavy gas, and accurate identification techniques are urgently required. We chose the Xihu Sag as an example to demonstrate the method. Large amounts of gas logging data were analyzed and the critical trend lines of heavy hydrocarbon components in the oil and gas layers were established. The results showed obvious differences between the distribution characteristics of the hydrocarbon components of the oil and gas layers. When the gas–oil ratio of the gas layer was higher, the light hydrocarbon content was higher, and the proportion of heavy hydrocarbon components was lower. In contrast, when the gas–oil ratio of the oil layer was lower, the heavy hydrocarbon content was higher, and the proportion of the heavy hydrocarbon component was higher. A hydrocarbon component chart analysis showed that when the hydrocarbon component distribution curve was more concentrated, the heavy hydrocarbon content was lower. The gas and oil layers were distributed within and outside of the critical line. The gas logging interpretation results of 25 wells in the study area showed that the interpretation coincidence rate of the hydrocarbon component distribution method was 89.5%, 10% higher than that of the traditional gas logging method. This method solves the problem of identifying complex fluids to a certain extent and is thus of great significance for reducing the cost of developing oil and gas fields and formulating reasonable developmental strategies.
VL  - 12
IS  - 3
ER  -

Copy | Download