scholarly journals The environmental effects of geologically sequestered carbon dioxide gas and the enhanced recovery of coal bed methane from an unmineable coal seam

2015 ◽  
Author(s):  
Brad David Hega
Keyword(s):  
Carbon Dioxide ◽  
Coal Seam ◽  
Environmental Effects ◽  
Enhanced Recovery ◽  
Coal Bed ◽  
Coal Bed Methane ◽  
Carbon Dioxide Gas

Study on Mechanism of Geological Storage of Carbon Dioxide in Coal Seam and Enhanced Coal Bed Methane Recovery

2013 ◽  
Vol 868 ◽  
pp. 261-264
Author(s):  
Feng Shan Han ◽  
Xin Li Wu
Keyword(s):  
Carbon Dioxide ◽  
Sustainable Development ◽  
Coal Seam ◽  
Absorption Capacity ◽  
Coal Bed ◽  
Coal Bed Methane ◽  
Environment Protection ◽  
Geological Storage ◽  
Methane Recovery ◽  
Storage Reservoirs

The emission in atmosphere results in global climates warm, reduction of emission is growing concern of many countries. The geological storage of is effective method to reduce emission. Because coal seam has strong absorption capacity for ,the coal seam can be used as geological storage reservoirs, and coal seam has such characteristics that coal seam is preference for absorption and postponement for absorption, injection into coal seam can enhanced coal bed methane recovery, -ECBM, because and compete and absorb in coal seam , displace , hence coal bed methane can be obtained by The geological storage of in coal seam,is a energy generated by methane from injection into coal seam, injection into coal seam can not only reduce emission and but also enhance coal bed methane recovery, that is important to environment protection and energy sustainable development.

scholarly journals POTENTIAL OF LIVESTOCK MANURE FOR COAL ACTIVATION

2017 ◽  
Vol 21 (1) ◽  
pp. 26 ◽  
Author(s):  
EllIN HARlIA HARlIA ◽  
MARlINA ET ◽  
MASITA R ◽  
RAHMAH KN
Keyword(s):  
Carbon Dioxide ◽  
Fatty Acids ◽  
Acetic Acid ◽  
Volatile Fatty Acids ◽  
Coal Bed ◽  
Coal Bed Methane ◽  
Anaerobic Conditions ◽  
Descriptive Approach ◽  
Carbon Dioxide Co2 ◽  
Reduction Of Co2

The natural methane formed by bacteria in anaerobic conditions is known as biogenic gas. Gas trapped in coal, formed through thermogenesis as well as biogenesisis known as coal-bed methane (CBM). The availability of organic material as decomposition of this material into methane is continuously required for the production of methane in the coal aquifer. The aim of this research was to investigate whether or not cattle feces bacteria were able to grow and produce methane in coal. Parameters measured were Volatile Fatty Acids (VFA) and the production of biogas, such as nitrogen, hydrogen, carbon dioxide, and methane. Explorative method was used and data obtained was analyzed by descriptive approach. The results showed that the bacteria found in the feces survived in the coal and produce biogas. On day 2 when the process was at the acidogenesis phase, it produced VFA with the largest component of acetic acid. Acetic acid would undergo decarboxylation and reduction of CO2 followed by reactions of H2and CO2 to produce methane (CH4) and carbon dioxide (CO2) as the final products. ,

Coal-bed methane geology of the No. 2 coal seam in Fengfeng Coalfield, North China

2019 ◽  
Vol 12 (16) ◽  
Author(s):  
Dawei Lv ◽  
Changyong Lu ◽  
Zhijie Wen ◽  
Hongzhu Song ◽  
Shuai Yin
Keyword(s):  
Coal Seam ◽  
North China ◽  
Coal Bed ◽  
Coal Bed Methane

Study on Well Logging Technology with Methods of Evaluating Gas Content of Coal-Bed Methane Reservoir

2014 ◽  
Vol 1003 ◽  
pp. 183-187
Author(s):  
Huai Jie Yang ◽  
He Ping Pan
Keyword(s):  
Statistical Analysis ◽  
Coal Seam ◽  
Well Logging ◽  
Langmuir Equation ◽  
Gas Content ◽  
Coal Bed ◽  
High Yield ◽  
Coal Bed Methane ◽  
Analysis Method ◽  
Statistical Analysis Method

In this study, the well logging response of CBM reservoir have been analyzed, and discussing the factors that affect the gas content of coal seam. The well logging technology has been employed in connection with log data and gas content. Take one oilfield’s well logging data for example, statistical analysis method and Langmuir equation method are selected to calculate the gas content of one coal seam, the two calculated results are basically the same, the highest value are about 26 cm3/g, is a high-yield coal seam.

Important Factors to Propose High-Produced New Development Wells in CBM Project

2014 ◽  
Vol 1030-1032 ◽  
pp. 2578-2581
Author(s):  
Zhao Hui Xia ◽  
Ming Zhang ◽  
Bin Ren ◽  
Liang Chao Qu ◽  
Ze Hong Cui ◽  
...  
Keyword(s):  
Coal Seam ◽  
3D Model ◽  
Coal Bed ◽  
Coal Bed Methane ◽  
Coal Seams ◽  
Reservoir Properties ◽  
Well Design ◽  
New Development ◽  
Reservoir Type ◽  
High Production

Coal bed methane (CBM) is a kind of natural gas that generated from coal and disseminated organic matters during the stage of diagenesis and coalification, which mainly composed of methane and hosted in coal seam by free, adsorbed, and dissolved forms. Genetic, reservoir type and occurrence condition in CBM are different from traditional reservoir. And the high-produced development wells in CBM aiming to drill more coal seams with high quality therefore needs to be analyzed in the methods that are different from traditional reservoir. 3 important factors including the study on correlation and elevation depth of coal seam roof and floor in section and areal by using well-seismic ties, outcrop boundary based on coal mine data and distributions of CBM reservoir properties in 3D model are needed for high-produced development well analyze in CBM. Application in Australia CBM project shows this methodology is very successful for the development well design with high production.

Additional Gas Resource for Coal Bed Methane by Applying Underground Coal Gasification and Enhanced Coal Bed Methane

2014 ◽  
Vol 931-932 ◽  
pp. 1020-1024
Author(s):  
Wan Rosli Wan Sulaiman ◽  
Norlia Azizan ◽  
Mohd Zaidi Jaafar ◽  
Abdul Razak Ismail ◽  
Mariani Abdul Hamid ◽  
...  
Keyword(s):  
Coal Seam ◽  
Coal Gasification ◽  
Economic Value ◽  
Extraction Methods ◽  
Coal Bed ◽  
Coal Bed Methane ◽  
Underground Coal Gasification ◽  
Power Stations ◽  
Technological Advances ◽  
Methane Potential

Methane gas obtained from coal sources can be classified into two categories i.e Coal Bed Methane (CBM) and Underground Coal Gasification (UCG) gases. The Industry today often neglects the importance of capturing the UCG as important source of methane potential besides the surface gasification potential. This research will evaluate on the new resource estimation of methane as reserves with application of new technological advances in exploitation. As an analysis, the UCG energy return is significantly higher than that of CBM. Both CBM and UCG output gas can be liquefied, or used as a direct feedstock to local power stations. The CO2 generated from UCG process may be used for Enhanced Coal Bed Methane (ECBM) process because of more adsorption capacity than methane, may lead to additional methane potential. Deeper coal seams may be targeted for CBM, followed by UCG for additional resources in the form of coal gas. A depleted CBM area may be targeted for UCG with some modification on the well profile. Developing an integrated and centrally controlled approach to exploit the coal resources in which, the appropriate extraction methodology should be identified for each particular target coal-seam or groups of coal seam. It is important to strategize the sequencing of energy extraction methods to provide an optimal balance between the energy delivery for sustainable future and its true socio-economic value. As from this analysis, with 245.6 acres of coal, estimated gas can be produced is 3.25 TSCF which is 101 BSCF is coming from CBM, 3.14 TSCF from UCG and another 14.45 BSCF is from ECBM.

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