Seismic-Geological Integrated Study on Sedimentary Evolution and Peat Accumulation Regularity of the Shanxi Formation in Xinjing Mining Area, Qinshui Basin

Bo Liu, Suoliang Chang, Sheng Zhang, Yanrong Li, Zhihua Yang, Zuiliang Liu and Qiang Chen
Additional contact information
Bo Liu: Department of Earth Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Suoliang Chang: Department of Earth Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Sheng Zhang: Department of Earth Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Yanrong Li: Department of Earth Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Zhihua Yang: Department of Geology and Survey, Huayang New Material Technology Group Co., Ltd., Yangquan 045000, China
Zuiliang Liu: Department of Geology and Survey, Huayang New Material Technology Group Co., Ltd., Yangquan 045000, China
Qiang Chen: Department of Earth Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Energies, 2022, vol. 15, issue 5, 1-22

Abstract: Accurate identification of the lithofacies and sedimentary facies of coal-bearing series is significant in the study of peat accumulation, coal thickness variation and coal-measured unconventional gas. This research integrated core, logging and 3D seismic data to conduct a comprehensive seismic–geological study on the sedimentary evolution characteristics and peat accumulation regularity of the Shanxi Formation in the Xinjing mining area of the Qinshui Basin. Firstly, the high-resolution sequence interface was identified, and the isochronous stratigraphic framework of the coal-bearing series was constructed. Then, the temporal and spatial evolution of sedimentary filling and sedimentary facies was dynamically analyzed using waveform clustering, phase rotation, stratal slice and frequency–division amplitude fusion methods. The results show that the Shanxi Formation in the study area can be divided into one third-order sequence and two fourth-order sequences. It developed a river-dominated deltaic system, mainly with delta plain deposits, and underwent a constructive–abandoned–constructive development stage. The locally distributed No. 6 coal seam was formed in a backswamp environment with distribution constrained by the distributary channels. The delta was abandoned at the later stage of the SS1 sequence, and the peat accumulation rate was balanced with the growth rate of the accommodation, forming a large-area distributed No. 3 thick coal seam. During the formation of the SS2 sequence, the No. 3 coal seam was locally thinned by epigenetic erosion of the river, and the thin coal belt caused by erosion is controlled by the location of the distributary channels and their extension direction. This study can provide a reference for the research on the distribution of thin sand bodies, sedimentary evolution and peat accumulation regularity in the coal-bearing series under the marine–continental transitional environment.

Keywords: seismic sedimentology; sedimentary facies evolution; peat accumulation regularity; frequency–division amplitude fusion; thin sand bodies (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/5/1851/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/5/1851/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:5:p:1851-:d:762830

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().