DOI: 10.1306/07061514240
Scopus记录号: 2-s2.0-84949450169
论文题名: Characterization of the micropore systems in high-rank coal reservoirs of the southern Sichuan Basin, China
作者: Shan C. ; Zhang T. ; Guo J. ; Zhang Z. ; Yang Y.
刊名: AAPG Bulletin
ISSN: 0149-1451
EISSN: 1558-9181
出版年: 2015
发表日期: 2015
卷: 99, 期: 11 起始页码: 2099
结束页码: 2119
语种: 英语
Scopus关键词: Adsorption
; Bottles
; Coal
; Gas adsorption
; Microporosity
; Nitrogen
; Nuclear magnetic resonance
; Petroleum reservoir engineering
; Pore size
; Porosity
; Scanning electron microscopy
; Specific surface area
; Temperature
; Adsorption capacities
; Barrett-joyner-halenda
; Brunauer emmet tellers
; High rank coal reservoirs
; Intercrystalline pores
; Low-temperature nitrogen
; Nuclear magnetic resonance(NMR)
; Positive correlations
; Low permeability reservoirs
; adsorption
; coal
; Lopingian
; low temperature
; nitrogen
; permeability
; pore space
; reservoir characterization
; vitrinite
; China
; Sichuan Basin
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: To gain a better understanding of the characteristics of micropore systems in high-rank coal reservoirs, 51 coal core samples collected from 16 wells were examined by macérai analysis, proximate analysis, scanning electron microscopy observation, low-temperature nitrogen (N2) gas adsorption, and nuclear magnetic resonance (NMR). The results show that pores in coals can be divided into plant tissue hole, blowhole, dissolved pore, and intercrystalline pore, and they have three structure shapes: open pore, semiclosed pore, and "ink bottle" pore. The total specific surface area (5BET) (Brunauer-Emmet-Teller [BET]) ranges from 0.611 to 12.854 m2/g (7 to 138 ft2/oz), averaged at 2.638 m2/g (28 ft2/oz). The total pore volume (VBJH) (Barrett-Joyner-Halenda model [BJH]) ranges from 0.0018 to 0.0112 cm3/g (0.0001 to 0.0007 in.3/oz) with an average of 0.0037 cm3/g (0.0002 in.3/oz), and it shows a good positive relationship with 5BET. The N2 adsorption amount shows a good positive relationship with the total SBET and VBJH. The average pore size ranges from 5.775 to 17.842 nm. Pores that are smaller than 5 nm make up the main contribution to the pore surface area, and those larger than 10 nm contribute greatly to the pore volume. Inertinite-rich coals have higher total specific surface area, pore volume, pore size, and adsorption capacity than those in vitrinite-rich coals. Lopingian coal reservoirs are characterized by low porosity and extremely low permeability obtained from NMR tests, and the permeability has a positive correlation with the porosity. The average permeability of inertinite (8.9464 × 10-3 md) is almost twice that of vitrinite (4.5056 × 10-3 md). Copyright © 2015. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84949450169&doi=10.1306%2f07061514240&partnerID=40&md5=f6aceca4e17ed6bae8764788ba8abad5
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13022
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Shan C.,Zhang T.,Guo J.,et al. Characterization of the micropore systems in high-rank coal reservoirs of the southern Sichuan Basin, China[J]. AAPG Bulletin,2015-01-01,99(11)