The Role of Microfabric and Laminae on Pore Structure and Gas Transport Pathways of Marine Shales from Sichuan Basin, China
المؤلفون المشاركون
Peng, Pan
Shu, Yi
Xu, Shang
Yang, Feng
Shu, Zhiguo
Huang, Senxin
Zhen, He
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-19، 19ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-07-21
دولة النشر
مصر
عدد الصفحات
19
التخصصات الرئيسية
الملخص EN
This study investigated the effects of microfabric and laminae on the pore structure and gas transport pathways of the Silurian Longmaxi shales from Sichuan Basin.
23 shale samples with varied lithofacies were comprehensively investigated by mineralogy, organic geochemistry, pycnometry, and low-pressure nitrogen adsorption analysis.
The fabric and laminae of these samples were identified using petrographic microscope and scanning electron microscopy.
Permeabilities were measured using the nonsteady-state method on both perpendicular and parallel to bedding shales.
The effective pore diameter controlling gas transport was estimated from gas slippage factors obtained in permeability measurements.
These values were also compared to those calculated using the Winland equation.
Siliceous shales studied are faintly laminated to nonlaminated and have larger porosity and specific surface area.
Argillaceous/siliceous mixed shales are well laminated, whereas argillaceous shales contain many oriented clay flakes along the lamination.
Both porosity and surface area are positively correlated with TOC content.
Unlike most conventional reservoirs, there is a negative correlation between porosity and permeability values of the samples studied.
Permeabilities parallel to bedding, ranging from 0.4 to 76.6 μD, are in control of the oriented clay flakes and silty microlaminae.
Permeability anisotropy values of the shales vary between 1.3 and 49.8.
Samples rich in oriented clay flakes and microlaminated fabric have relatively larger permeability and permeability anisotropy values.
The effective transport pore diameters derived from gas slippage measurements are slightly lower than those calculated from the Winland equation.
However, both methods have shown that the effective transport pore diameters of argillaceous shales (averaging 552 nm) are significantly higher than siliceous shales (averaging 198 nm), which underlines the control of microfabric, rather than porosity, on gas transport pathways of the shales studied.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Shu, Yi& Xu, Shang& Yang, Feng& Shu, Zhiguo& Peng, Pan& Huang, Senxin…[et al.]. 2020. The Role of Microfabric and Laminae on Pore Structure and Gas Transport Pathways of Marine Shales from Sichuan Basin, China. Geofluids،Vol. 2020, no. 2020, pp.1-19.
https://search.emarefa.net/detail/BIM-1165852
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Shu, Yi…[et al.]. The Role of Microfabric and Laminae on Pore Structure and Gas Transport Pathways of Marine Shales from Sichuan Basin, China. Geofluids No. 2020 (2020), pp.1-19.
https://search.emarefa.net/detail/BIM-1165852
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Shu, Yi& Xu, Shang& Yang, Feng& Shu, Zhiguo& Peng, Pan& Huang, Senxin…[et al.]. The Role of Microfabric and Laminae on Pore Structure and Gas Transport Pathways of Marine Shales from Sichuan Basin, China. Geofluids. 2020. Vol. 2020, no. 2020, pp.1-19.
https://search.emarefa.net/detail/BIM-1165852
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1165852
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر