Quantitative interpretation of coal industrial components using a gray system and geophysical logging data: A case study from the Qinshui Basin, China
Guo, Jianhong1; Zhang, Zhansong1; Xiao, Hang4; Zhang, Chaomo1; Zhu, Linqi2; Wang, Can3
刊名FRONTIERS IN EARTH SCIENCE
2023-01-06
卷号10页码:21
关键词coal quality analysis industrial components ash content geophysical logging data Qinshui Basin OBGM (1, N)
DOI10.3389/feart.2022.1031218
通讯作者Zhang, Zhansong
英文摘要

The content of industrial components of coalbeds, one of the main parameters of coalbed methane (CBM) reservoirs, is crucial in the entire coal mine resource exploration and exploitation process. Currently, using geophysical logging data to determine the content of industrial components is the most widely implemented method. In this study, the PZ block in the Qinshui Basin was employed as a target block to evaluate ash (A(ad)), fixed carbon (FCad), volatile matter (V-daf), and moisture (M-ad) under the air-dry (AD) base condition based on the autocorrelation between the geophysical logging curves and industrial component contents combined with the OBGM (1, N) model. The results indicate that 1) the geophysical logging curves combined with the OBGM (1, N) model can accurately predict the A(ad) and FCad contents and an increase in geophysical logging curve types can effectively improve the model performance, compared to using a single geophysical logging curve for prediction. 2) When predicting the V-daf content, using the geophysical logging curves combined with A(ad) and FCad contents had the highest prediction accuracy. Further, prediction bias does not exist, compared to using only the geophysical logging curve or the autocorrelation between the industrial component contents. The entire evaluation process begins with an assessment of the A(ad) and FCad contents. Then, the V-daf content was assessed using the content of these two industrial components combined with geophysical logging data. Finally, the M-ad content was calculated using the volumetric model. Accurate application results were obtained for the verification of new wells, demonstrating the efficacy of the method and procedure described in this study. 3) The OBGM (1, N) model has the highest prediction accuracy compared with the multiple regression and GM (0, N) models, which have the same computational cost. The geophysical logging interpretation model of the proposed coalbed industrial component contents is simple to calculate and suitable for small samples, providing a new method for the evaluation process of industrial component contents.

资助项目Open Fund of the Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education[K2021-03] ; Open Fund of the Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education[K2021-08] ; National Natural Science Foundation of China[42106213] ; Hainan Provincial Natural Science Foundation of China[421QN281]
WOS关键词PERMIAN COAL ; METHANE ; SEAM ; GAS ; IDENTIFICATION ; PERMEABILITY ; PREDICTION ; PARAMETERS ; RESERVOIRS ; COALFIELD
WOS研究方向Geology
语种英语
出版者FRONTIERS MEDIA SA
WOS记录号WOS:000918341300001
资助机构Open Fund of the Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education ; National Natural Science Foundation of China ; Hainan Provincial Natural Science Foundation of China
内容类型期刊论文
版本出版稿
源URL[http://ir.idsse.ac.cn/handle/183446/10086]  
专题深海科学研究部_深海地球物理与资源研究室
通讯作者Zhang, Zhansong
作者单位1.Yangtze Univ, Key Lab Explorat Technol Oil & Gas Resources, Minist Educ, Wuhan, Peoples R China
2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya, Peoples R China
3.Hubei Inst Hydrogeol & Engn Geol, Jingzhou, Peoples R China
4.Sinopec Jianghan Oilfeld Co, Res Inst Explorat & Dev, Wuhan, Peoples R China
推荐引用方式
GB/T 7714
Guo, Jianhong,Zhang, Zhansong,Xiao, Hang,et al. Quantitative interpretation of coal industrial components using a gray system and geophysical logging data: A case study from the Qinshui Basin, China[J]. FRONTIERS IN EARTH SCIENCE,2023,10:21.
APA Guo, Jianhong,Zhang, Zhansong,Xiao, Hang,Zhang, Chaomo,Zhu, Linqi,&Wang, Can.(2023).Quantitative interpretation of coal industrial components using a gray system and geophysical logging data: A case study from the Qinshui Basin, China.FRONTIERS IN EARTH SCIENCE,10,21.
MLA Guo, Jianhong,et al."Quantitative interpretation of coal industrial components using a gray system and geophysical logging data: A case study from the Qinshui Basin, China".FRONTIERS IN EARTH SCIENCE 10(2023):21.
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