【摘要】：以鄂爾多斯盆地東緣海陸過渡相太原組泥頁巖為研究對象,通過野外調(diào)查和實驗測試分析太原組泥頁巖的空間展布、儲層地球化學與物性特征以及頁巖氣成藏特征。估算頁巖氣資源潛力。研究認為:鄂爾多斯盆地東緣太原組泥頁巖沉積于三角洲平原和潮坪-o_湖環(huán)境,沉積厚度為30~70 m,自東向西變薄;泥頁巖有機質(zhì)為Ⅲ型干酪根,有機碳含量為4.06%,成熟度為0.90%~2.40%,處于中等—過成熟階段;儲層孔隙以微孔為主,脆性礦物含量超過45%,具較好的頁巖氣源巖和儲層條件;頁巖氣藏主要為深埋熱作用與巖漿熱作用疊加的熱成因型氣藏,形成于早白堊世的生烴高峰期。采用體積法估算頁巖氣資源量約為1.924 3×10~(12)m~3;初步優(yōu)選出臨縣—興縣和石樓—隰縣—大寧—蒲縣等2個勘探有利區(qū),有利區(qū)頁巖氣資源潛力約為0.92×10~(12)m~3,該研究為鄂爾多斯盆地東緣頁巖氣勘探開發(fā)提供了依據(jù)。
[Abstract]:Taking the shale of Taiyuan formation in the eastern margin of Ordos Basin as the research object, the spatial distribution, reservoir geochemistry and physical properties and shale gas accumulation characteristics of Taiyuan formation mud shale are analyzed through field investigation and experimental test. Estimate the potential of shale gas resources. It is considered that the shale of Taiyuan formation in the eastern margin of Ordos Basin is deposited in Delta plain and tidal flat-o _ lake environment, with a sedimentary thickness of 30 m and 70 m, which becomes thinner from east to west. The organic matter of shale is type III kerogen, the content of organic carbon is 4.06%, the maturity is 0.90% 鈮，

本文編號：2486969