Proceedings of the 2023 9th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2023)

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Sedimentary Microfacies and Exploration Prospect of Benxi Formation in Ansai Gas Field, Ordos Basin

Authors
Di Wu1, Feng Guo1, *, Minzhang Wei1, 2, Yuan Li1
1School of Earth Sciences and Engineering, Xi’an Shiyou University, Xi’an, Shaanxi, 710065, China
2No. 5 Oil Production Plant of Changqing Oilfield Company, Xi’an, Shaanxi, 710200, China
*Corresponding author. Email: guofeng@xsyu.edu.cn
Corresponding Author
Feng Guo
Available Online 14 May 2024.
DOI
10.2991/978-94-6463-415-0_40How to use a DOI?
Keywords
Ansai gas field; Benxi formation; sedimentary microfacies; exploration prospect
Abstract

Benxi formation is the main gas producing strata in Ansai gas field. In order to clarify the characteristics of sedimentary microfacies and exploration prospects in this area, based on the interpretation of core and logging data, combined with sample analysis and testing, the distribution characteristics of sedimentary microfacies and sand bodies in Benxi formation were studied. The results show that the sedimentary rocks in Benxi formation are mainly medium-fine grained quartz sandstone, with a small amount of debris quartz sandstone. Tidal flat sedimentary system is mainly developed in Benxi formation, and three sedimentary microfacies are further divided into sand flat, mixed flat and mud flat. The distribution of sand flats is limited, and the sand bodies are scattered in the sedimentary area in patch form, so the connectivity is poor. Only in the mid-west, the connectivity of sand bodies is relatively good. The distribution of sand bodies in Benxi formation is much more complicated than previously thought. Benxi formation is a tidal flat-delta composite sedimentary body, and tidal action has obvious destruction and redistribution effects on preexisting delta sand bodies. The favorable zones are mainly distributed in the vast middle sand flat.

Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2023 9th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2023)
Series
Atlantis Highlights in Engineering
Publication Date
14 May 2024
ISBN
10.2991/978-94-6463-415-0_40
ISSN
2589-4943
DOI
10.2991/978-94-6463-415-0_40How to use a DOI?
Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Di Wu
AU  - Feng Guo
AU  - Minzhang Wei
AU  - Yuan Li
PY  - 2024
DA  - 2024/05/14
TI  - Sedimentary Microfacies and Exploration Prospect of Benxi Formation in Ansai Gas Field, Ordos Basin
BT  - Proceedings of the 2023 9th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2023)
PB  - Atlantis Press
SP  - 375
EP  - 382
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-415-0_40
DO  - 10.2991/978-94-6463-415-0_40
ID  - Wu2024
ER  -