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Numerical Simulation Based on the Canister Test for Shale Gas Content Calculation[基于现场解析实验的页岩气含量数值模拟]
  • 2024-01-08
元数据
名   称 Numerical Simulation Based on the Canister Test for Shale Gas Content Calculation[基于现场解析实验的页岩气含量数值模拟]
科技资源标识 CSTR:11738.14.NCDC.XDA14.PP5638.2024
DOI 10.3390/en14206518
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摘   要 The accurate determination of the gas in place in shale reservoirs is a basic but challenging issue for shale gas evaluation. Conventional canister gas desorption tests on retrieved core samples and subsequent data analyses (via linear polynomial regression)—originally developed for coalbed methane, where gases are mainly stored in the adsorbed phase—is unadvisable for shale gas, which is stored as an appreciable amount of free gas in shale reservoirs. In the present study, a mathematical model that simultaneously takes into account gas expansion, adsorption/desorption, and the gas flow in shale is proposed to simulate gas release from a core sample retrieved from the Lower Silurian Longmaxi Formation of the Fuling shale gas field, Sichuan Basin. The results indicate that, compared with the value of 2.11 m3/t rock estimated with the traditional United States Bureau of Mines (USBM) method, the total gas in place within the studied Longmaxi Shale estimated with our mathematical model under reservoir pressure conditions is up to 5.88 m3/t rock, which is more consistent with the result from the new volumetric approach based on Ambrose et al. According to our mathematical model, the content of free gas is 4.11 m3/t rock at true “time zero”, which accounts for 69.9% of the total gas. On the other hand, the lost gas portion is determined to be up to 4.88 m3/t rock (~85% of the total gas). These results suggest that the majority of the free shale gas is actually trapped within the pore space of the shale formation.
学科分类
170.20
关键词
shale gas mathematical model canister test gas content Longmaxi Shale
作者 Shujuan Kang*,Le Lu,Hui Tian,Yunfeng Yang,Chengyang Jiang and Qisheng Ma
数据量 1.5 MiB
论文类型： journal
期刊名称： energies
出版时间： 2021-09-01
引用和标注
数据引用
Shujuan Kang*,Le Lu,Hui Tian,Yunfeng Yang,Chengyang Jiang and Qisheng Ma. Numerical Simulation Based on the Canister Test for Shale Gas Content Calculation[基于现场解析实验的页岩气含量数值模拟]. 国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn), 2024. https://cstr.cn/CSTR:11738.14.NCDC.XDA14.PP5638.2024.
Shujuan Kang*,Le Lu,Hui Tian,Yunfeng Yang,Chengyang Jiang and Qisheng Ma. Numerical Simulation Based on the Canister Test for Shale Gas Content Calculation[基于现场解析实验的页岩气含量数值模拟]. 国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn), 2024. https://www.doi.org/10.3390/en14206518.
许可协议
知识共享许可协议   本作品采用 知识共享署名 4.0 国际许可协议进行许可。
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