Reservoir Characteristics of the Lower Silurian Longmaxi Shale in Zhaotong Region, Southern China
Joint Authors
Wang, Junlei
Gao, Xuanbo
Luo, Chao
Yin, Nanxin
Lin, Hun
Zhu, Hanqing
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-08-25
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
The lower Silurian Longmaxi Formation hosts a highly productive shale gas play in the Zhaotong region of southern China.
According to core observation, X-ray diffraction analyses, and scanning electron microscopy (SEM) observations, the shale comprises primarily quartz, carbonate minerals, and clay minerals, with minor amounts of plagioclase, K-feldspar, and pyrite.
The clay mineral content ranges from 15.0% to 46.1%, with an average of 29.3% in the Zhaotong region.
Organic geochemical analyses show that the Longmaxi Formation has good potential for shale gas resources by calculating total organic carbon, vitrinite reflectance, and gas content.
Scanning electron microscope images demonstrate that reservoir pore types in the Longmaxi shale include organic pores, interparticle pores, intercrystalline pores, intraparticle pores, and fractures.
Reservoir distribution is controlled by lithofacies, mineral composition, and geochemical factors.
In addition, we investigated the relationships between reservoir parameters and production from 15 individual wells in the Zhaotong region by correlation coefficients.
As a result, the brittleness index, total organic carbon (TOC), porosity, and gas content were used to define high-quality reservoirs in the Longmaxi shale.
Based on these criteria, we mapped the thickness and distribution of high-quality reservoirs in the Longmaxi Formation and selected highlighted several key sites for future exploration and development.
American Psychological Association (APA)
Luo, Chao& Yin, Nanxin& Lin, Hun& Gao, Xuanbo& Wang, Junlei& Zhu, Hanqing. 2020. Reservoir Characteristics of the Lower Silurian Longmaxi Shale in Zhaotong Region, Southern China. Geofluids،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1166113
Modern Language Association (MLA)
Luo, Chao…[et al.]. Reservoir Characteristics of the Lower Silurian Longmaxi Shale in Zhaotong Region, Southern China. Geofluids No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1166113
American Medical Association (AMA)
Luo, Chao& Yin, Nanxin& Lin, Hun& Gao, Xuanbo& Wang, Junlei& Zhu, Hanqing. Reservoir Characteristics of the Lower Silurian Longmaxi Shale in Zhaotong Region, Southern China. Geofluids. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1166113
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1166113