Coal rock can be classified as humic and sapropelic coal.
在煤岩的分类中，有腐殖煤和腐泥煤之分。
Gas in Huayingcan 1 well is humic-type natural gas, with small amount of sapropelic gas.
华英参1井天然气属于腐殖型气，其中也混入了少量腐泥型气。
Gas in Huayingcan 1 well is humic-type natural gas, with small amount of sapropelic gas.
华英参1井天然气属于腐殖型气，其中也混入了少量腐泥型气。
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