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《World Well Logging Technology》 2012-01
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RESEARCH ON PHYSICAL PROPERTY EVALUATION OF THE COALBED IN EASTERN DEPRESSION OF LIAOHE OILFIELD

He Xiaohui,Zhao Rong,Xie Lizhi(Graduate School of Yangtze University)  
In the paper,the logging features of the eastern depression in Liaohe oilfield are summarized,and the physical property characteristics of the reservoirs and controlling factors are analyzed.Proosity and permeability calculation method is given out which corresponds with the experimental result.The well logging interpretation program for coalbed gas is composed with two formulae.One is experimental formula from F-S method combined with the area properties,the other is theoretical formula derived from Darcy law.The program is used to process some wells to get the profile.It can be seen from the profile that proosity and permeability of coal beds are very low.The process coincides with testing.Single-phase injection pressure drop test was carraried out in the coalbed interval of Well 15.The result shows that the calculated permeability is more accurate.
【CateGory Index】: P618.13
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