Measurement of coalbed gas content of Indian coalfields: a statistical approach

被引：11

作者：

Asif, Mohammad ^{[1
]}

Pillalamarry, Mallikarjun ^{[2
]}

Panigrahi, D. C. ^{[1
]}

Naveen, Paul ^{[3
]}

Ojha, Keka ^{[3
]}

机构：

[1] Indian Inst Technol ISM, Dept Min Engn, Dhanbad 826004, Jharkhand, India

[2] Namibia Univ Sci & Technol, Min & Proc Engn, 13 Jackson Kaujeua St, Windhoek, Namibia

[3] Indian Inst Technol ISM, Dept Petr Engn, Dhanbad 826004, Jharkhand, India

来源：

INTERNATIONAL JOURNAL OF OIL GAS AND COAL TECHNOLOGY | 2020年 / 25卷 / 01期

关键词：

coalbed methane; gas content; proximate analysis; adsorption isotherm; GEOLOGICAL CONTROLS; BITUMINOUS COAL; SYDNEY BASIN; METHANE; PREDICTION; ISOTHERMS; CAPACITY; MOISTURE;

D O I：

10.1504/IJOGCT.2020.108854

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Sixty coal samples from different Indian coal fields were collected and characterised to analyse the gas content, petrography and composition. The gas content of coal samples was directly determined using a canister desorption test and statistically correlated with various parameters using regression analyses. The newly developed correlations are based on Langmuir, Ryan, and Kim correlations and modified to fit the data best. The gas content was observed to be a strong function of the proximate parameters i.e. fixed carbon, volatile matter, moisture content, and ash content as resulted from regression analyses. Vitrinite reflectance was also found to affect the gas content of the coal seams. To check the significance of calculated results, a paired-samples t-tests have been performed for 42 coal samples. Results confirmed the validity of the New Langmuir and New Ryan correlations with good confidence, i.e., t = -2.1, p < .05.

引用

页码：73 / 88

页数：16

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