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The Research of Accumulation of Low Rand Coldbed Methane in the North-West of China

Author: YeXin
Tutor: ZhangShaoZuoï¼›LiJingMing
School: Chengdu University of Technology
Course: Mineral prospecting and exploration
Keywords: Low rank coal Coalbed Methane Accumulation in Adsorption Desorption Junggar Basin Turpan-Hami Basin
CLC: P618.11
Type: Master's thesis
Year: 2007
Downloads: 712
Quote: 4
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Abstract


CBM exploration and development in China, mostly concentrated in the coal-bearing area of high rank , low rank coal exploration and development of coal-bearing area of research in our country is relatively very weak . Since there is a large difference in the physics, chemistry and pore structure of the low - rank coal with high rank , reservoir characteristics of the low - rank coal and gas-rich accumulation mechanism has important significance . On the basis of the the CBM reservoirs at home and abroad of the status quo and progress of China 's northwest low rank coalbed methane causes of low rank coalbed methane mainly secondary biogenic coalbed methane . And analysis of low rank coalbed methane -containing gas , desorption , adsorption capacity . Analysis of coal samples obtained in the laboratory desorption data and production data , the high and low rank coals desorption mode . Analysis of low rank coal organic geochemical characteristics and hydrogeological characteristics , and to explore the differences compared with the high rank coal reservoir characteristics . Domestic Northwest typical of low - rank coal basin, Junggar and Turpan-Hami Basin , for example , analysis of the basic characteristics and reservoir characteristics of its gas content , and stress , and pointed out that the most favorable of Northwest coal reservoir accumulation layer system for eight the Bay group Xishanyao group. And analysis of the combination of reservoir type and accumulation mode . Which Junggar basin to basin margin the steep alluvial system slow stream late bio- gas accumulation model . Turpan-Hami Basin CBM reservoir basin depression mode . A Comparative Study of low rank coal reservoir characteristics and high rank coal reservoirs and reservoir formation differences .

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