本文選題：頁巖氣 + 海陸過渡相�。� 參考：《中國礦業(yè)大學(xué)學(xué)報(bào)》2017年04期

【摘要】：鄂爾多斯盆地二疊系山西組海陸過渡相頁巖是重要的頁巖氣勘探層位,為了深入研究山西組海陸過渡相頁巖含氣性及氣體地球化學(xué)特征,選取2口鉆井巖芯樣品進(jìn)行了現(xiàn)場解析氣量測定、解析氣組分和穩(wěn)定碳同位素分析以及相關(guān)有機(jī)地球化學(xué)分析,認(rèn)為山西組海陸過渡相頁巖具備頁巖氣生成的良好地質(zhì)條件.研究結(jié)果表明:山西組頁巖有機(jī)質(zhì)豐度較高(TOC為1.73%~3.09%),干酪根類型為Ⅲ型,并處于成熟—高成熟演化階段;解析氣中,甲烷體積分?jǐn)?shù)為80.07%~96.29%,平均值為88.79%,甲烷和乙烷的碳同位素值分別介于-49.2‰~-36.9‰和-17.1‰~-15.4‰之間,碳同位素均具有δ~(13)C_1δ~(13)C_2的正序分布特征,屬于有機(jī)熱成因氣;山西組頁巖解析氣含量平均值為0.38 m3/t,處于已具備頁巖氣生產(chǎn)能力的四川盆地五峰組—龍馬溪組頁巖解析氣含量范圍之內(nèi),表明鄂爾多斯盆地山西組海陸過渡相頁巖具有較好的頁巖氣勘探潛力.
[Abstract]:Marine and continental transitional shale of the Permian Shanxi formation in Ordos Basin is an important shale gas exploration horizon. In this paper, two core samples are selected to determine the gas volume in situ, analyze the gas composition, stable carbon isotopes and related organic geochemistry. It is concluded that the marine and continental transitional shale of Shanxi formation has good geological conditions for shale gas generation. The results show that the abundance of organic matter in Shale of Shanxi formation is 1.73 and 3.09, the type of kerogen is type 鈪，

本文編號(hào)：1839848