Natural gas content of the “Five-meter” coal seam of the Neryungrinskoye field
Abstract The article examines, analyzes and consolidates the results of research (direct and indirect research methods) of the gas content of the “Five-meter” seam of the Neryungrinsky coal deposit, which is slated for underground mining. The article also presents the criteria that determine the rep...
| Published in: | IOP Conference Series: Earth and Environmental Science |
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| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | unknown |
| Published: |
IOP Publishing
2022
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1088/1755-1315/990/1/012072 https://iopscience.iop.org/article/10.1088/1755-1315/990/1/012072 https://iopscience.iop.org/article/10.1088/1755-1315/990/1/012072/pdf |
| Summary: | Abstract The article examines, analyzes and consolidates the results of research (direct and indirect research methods) of the gas content of the “Five-meter” seam of the Neryungrinsky coal deposit, which is slated for underground mining. The article also presents the criteria that determine the representativeness of the tested samples by the direct method, which allow the introduction of indirect methods for studying the gas content of the “Pyatimetrovy” formation of the Neryungri field without losing the reliability of the results. As a result of the analysis of the factual material and the geological situation at the field, as well as taking into account the data on the current state of open pit mining at the field, the following were identified: the main factors influencing the degree and nature of the gas content of the Pyatimetrovy layer of the Neryungrinskoye field; composition of gases, the inflow of which is expected to enter the mine atmosphere during mining operations to extract coal from the “Five-meter” seam by the underground method. The main results of the research presented in the article are: the identification of two main gas zones of the “Five-meter” formation with the construction of a gas zoning diagram along the depth of the formation; determination of the presence of gas traps at the field with low production rate of free gas, which are determined by the presence of permafrost in the field; establishing the influence of open pit mining at the deposit on the activation of the natural degassing process of the coal seam and its host rocks at the present stage. The quantitative indicators of the methane content of the coal seam in the field have been established, it has been noted that natural gases in the host rocks are identical to those in the reservoir. |
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