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논문 기본 정보

자료유형
학술저널
저자정보
Fengfeng Du (School of Energy Science and Engineering Henan Polytechnic University Jiaozuo Henan China) Xiaoming Ni (School of Energy Science and Engineering Henan Polytechnic University Jiaozuo Henan China) Runsheng Lv (Institute of Resources & Environment Henan Polytechnic University Jiaozuo Henan China) Xuxing Feng (Shanxi Luan Jinyuan Coalbed Methane Development Co. Ltd. Changzhi Shanxi China)
저널정보
한국지질과학협의회 Geosciences Journal Geosciences Journal Vol.27 No.2
발행연도
2023.4
수록면
241 - 251 (11page)
DOI
10.1007/s12303-022-0026-x

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In addition to reservoir geological factors, economic benefits are another important factor that determines the feasibility of co-layer drainage. In view of this, this paper takes the 3# and 15# coal seams in the Wangcun-Xiadian block of the Qinshui Basin (Shanxi Province, China) as the research object, adopts the step-by-step method to summarize the geological influencing factors and thresholds of the drainage of the total combined seam, and eliminates the unsuitable geological conditions blocks for layer development. Using the productivity numerical simulation software combined with the constructed economic evaluation model, the suitable blocks for co-production in this zone were identified. The one-sidedness of the evaluation results caused by only considering the geological reservoir conditions is avoided, and the practicability of the evaluation results is guaranteed. The results indicate that the difference of formation liquid supply capacity between the two layers of coal is the key factor affecting combined layer drainage. When the gas content of 3# coal seam is 8,15m3/t and the post-fracturing permeability exceeds 5.17 × 10−3μm2 and 1.13 × 10−3μm2 respectively, it is suitable for single development of 3# coal seam. When the geological conditions for commingled production are met, it is suitable for simultaneous development of 3# and 15# when the permeability after fracturing exceeds 6.27 × 10−3μm2 and 1.31 × 10−3μm2 respectively under the same gas content. The study methodology considers both geological reservoirs and economic benefits, which can more objectively and accurately evaluate the suitable development blocks.

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