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ԭ ģ ֧ܧ ӧѧ ֧ߧ ԧ ѧ ڧ writer_phew- ֧ާ ҧ ѧݧ ԧ ݧէ ߧ ֧ ?۹ ú Ŀ ̽ǰ · Translate this pageAbstract According to the formation mechanism of coalformed gas.and based on the analysis of the sedimentary environment, the estimated coal reserves and the distribution of coal-series and coal-rank, the prospect of coal-formed gas exploration in the coal system of Upper Permian in Guizhou is discussed in this paper.It is pointed out that the Beipan river and Westem Guizhou structure basins

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