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华北地洼区东明地洼文留气藏,是一个富集程度很高的砂岩型气藏。据地洼学说成矿理论,结合实际资料分析应属多因复成矿床——地洼型煤成气藏。气源来自地台构造层的石炭-二叠系,储集于地洼构造层的沙河街组中。划分了地洼型煤成气藏的构造类型:背斜型(文留型),不整合面型;残留型;盆地陡坡型;古潜山型,并指出了本区地洼型煤成气藏的找矿方向。
The Dongmingdiwa Wenliu gas pool in the depression area of the North China depression is a sandstone gas reservoir with a high degree of enrichment. According to the theory of diagenesis mineralization theory, combined with the actual data analysis should be due to multiple deposits - Di depression coal into gas reservoir. The source of gas comes from the Carboniferous-Permian system in the tectonic layer of the platform, which is stored in the Shahejie Formation in the Diwa structural layer. This paper divides the structural types of Diwa type coal gas reservoirs into anticline type (Wenliu type), unconformity type, residual type, basin type and buried hill type, Hidden prospecting direction.