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The Design of CBM Development Well Pattern in the Yanmazhuang Mine

Author: LeiDongJi
Tutor: ZhangZiMin；ZhangYuGui
School: Henan Polytechnic University
Course: Safety Technology and Engineering
Keywords: evolution of geological structures structural control coalbed methane occurrence pattern design Jiaozuo Mining Area
CLC: TD84
Type: Master's thesis
Year: 2009
Downloads: 200
Quote: 0
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Abstract


Coal-bed methane (gas) is a product of geological effect,Its generation, migration and storage conditions is controled by geological structures. The control effect of geological structures to the occurrence of coalbed methane is an important theory basis to coal-bed methane develop pattern design .Using geological evolution theory, coal-bed methane (gas) storage structure level control theory, coal-bed methane production, storage, transport characteristics for the basic theory, from the occurrence of tectonic controls on coal-bed methane started to study the structure of the mining area characteristics and tectonic-controlled gas characteristics: the fenghuangling faults and yuhekou fault in the region is divided into southern, central and northern parts of three different tectonic block, including two gas distribution zones: 1) high gas content distribution area (southern, central block) 2) low gas content distribution area (northern block). So as to arrive at the occurrence laws of the mining area, identify coal-bed methane-rich region and draw the focus reconnaissance area.Focused on Yan Mazhuang- Jiulishan focus reconnaissance the study area, According to the focus analysis of the speech at Yan Mazhuang mine gas control structure characteristics and qualitative and quantitative analysis of other geological factors, the basic information on gas come to mine coal gas distribution . Based on structural characteristics, coalbed methane occurrence regularity and ease of coal-bed methane development, divided into A, B, C Level 3, the order of coal-bed methane development is divided intoⅠ,Ⅱ,Ⅲ,Ⅳblock paragraph four, the volume of Waida Yan Mazhuang with his coal-bed methane reserves are calculated, the evaluation of coal-bed methane resources; Yan Mazhuang mine from my hydro-geological conditions, roof and floor lithology and tectonic development of the law of coal and coalbed methane evaluation of permeability of the geological aspects of the admissibility, the evaluation of gas-bearing parameters of abundance, the exploitation of the value of coal seam gas production performance evaluation of the important parameters of the admissibility of coal-bed methane.From the above theoretical analysis, the development of wells for coalbed methane wells Net design and layout principles provide the basis for which the use of diamond-shaped pattern laid method, well spacing for the 300×200×262m network of wells and to determine the extraction sequence and the single well productivity and economic benefits.

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