通过对含煤建造及构造体系的分析，探讨了勃利煤田的变质规律。
Through analysis on coal formation and system, expound the change regulation of Boli coal field.
结果表明：勃利盆地东部电性中低电阻率区不利于生油，而是一个寻找煤层气的有利地区；
The results show that the low-resistivity area in the eastern Boli basin is not a conducive area of oil, but a favorable area for coalbed methane;
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