本文關(guān)鍵詞：準(zhǔn)南蘆草溝組頁巖有機(jī)地球化學(xué)特征及非常規(guī)油氣地質(zhì)意義　出處：《中國石油勘探》2017年04期 　論文類型：期刊論文

  更多相關(guān)文章： 準(zhǔn)噶爾 蘆草溝組 頁巖氣 干酪根類型 有機(jī)碳含量 有機(jī)質(zhì)成熟度

【摘要】：在四川盆地頁巖氣勘探開發(fā)取得巨大成功之后,為了評價準(zhǔn)噶爾盆地南緣頁巖氣資源潛力,結(jié)合地表地質(zhì)調(diào)查及頁巖氣調(diào)查井鉆探成果,對準(zhǔn)噶爾盆地南緣蘆草溝組泥頁巖有機(jī)地球化學(xué)特征進(jìn)行了博格達(dá)東段與西段及蘆草溝組內(nèi)部上段與中段、下段和露頭與鉆井的詳細(xì)對比研究,并指出了蘆草溝組的非常規(guī)油氣潛力。研究結(jié)果表明:(1)蘆草溝組有機(jī)質(zhì)類型以巖石熱解進(jìn)行劃分的結(jié)果比鏡檢結(jié)果更趨合理,且干酪根主要為Ⅰ型及Ⅱ_1型,Ⅱ_2型及Ⅲ型所占比重相對較小,Ⅲ型干酪根在博格達(dá)東段比西段發(fā)育。(2)蘆草溝組有機(jī)質(zhì)豐度高,77%的樣品其TOC≥2%,TOC主要介于3.0%~4.0%之間;平面上,博格達(dá)西段蘆草溝組TOC高于博格達(dá)東段;縱向上,中段TOC高于上段,而上段高于下段。(3)蘆草溝組有機(jī)質(zhì)鏡質(zhì)組反射率峰值為0.8%,T_(max)主要介于440~450℃之間,有機(jī)質(zhì)處于成熟階段為主;蘆草溝組在博格達(dá)東段抬升暴露略早于博格達(dá)西段,所經(jīng)歷的熱演化程度略低于博格達(dá)西段。(4)準(zhǔn)南蘆草溝組具較好的致密油與頁巖氣勘探潛力,而且博格達(dá)西段蘆草溝組頁巖氣勘探潛力可能好于博格達(dá)東段。
[Abstract]:After the great success of shale gas exploration and development in Sichuan Basin, in order to evaluate the potential of shale gas resources in the southern margin of Junggar Basin, the drilling results of surface geological survey and shale gas survey well are combined. The organic geochemical characteristics of mud shale of Lucaogou formation in the southern margin of Junggar Basin are compared and studied in detail between the eastern and western sections of Bogda and the upper and middle segments of the inner part of the Lucaogou formation, the lower section and outcrop and drilling. The unconventional oil and gas potential of the Lucaogou formation is pointed out. The results show that the organic matter types of the Lucaogou formation are classified by rock pyrolysis, which is more reasonable than the results of microscopic examination. The kerogen was mainly type 鈪，

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