【摘要】：寒武系底部馬店組黑色巖系是南華北盆地最重要的海相烴源巖,油氣顯示豐富。通過分析具有油氣顯示巖石中流體包裹體的鏡下特征、熒光特征、均一溫度以及成分,總結(jié)了包裹體的類型與期次,進而反演了馬店組烴源巖的油氣演化歷史。結(jié)果表明,馬店組原生的鹽水包裹體和有機包裹體均一溫度范圍分別為115~300℃和108~220℃,主峰溫度值均為185℃;包裹體含有H2S、CO、H2、N2還原性組分,按C_(1-6)/CO_2值關(guān)系將包裹體分為CO_2型(C_(1-6)/CO_2=0.08)、高CO_2型(C_(1-6)/CO_2=0.24)、輕烴+CO_2型(C_(1-6)/CO_2=0.43~0.92)和輕烴型(CO_2≈0)。有機包裹體豐度及成分類型變化顯示在成巖作用中期、成巖作用晚期和成巖期后構(gòu)造期先后有3期生排烴過程,其中成巖期后構(gòu)造期為高成熟生排烴高峰期,時間為早—中三疊世。馬店組原生包裹體著重記錄了高成熟凝析油—濕氣階段及過成熟干氣階段的油氣生成和充注過程,儲層的流體包裹體評價結(jié)果為工業(yè)氣層或氣顯示層;次生包裹體可能記錄了抬升剝蝕期間的流體活動過程。盆地內(nèi)部中新生代沉積區(qū)的馬店組烴源巖在燕山—喜馬拉雅期仍有較好的二次生烴潛力,是值得進一步勘探的有利目標(biāo)。
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圖片說明：圖１四十里長山地區(qū)南部地質(zhì)簡圖和采樣位置Ｆｉｇ．１ＧｅｏｌｏｇｉｃａｌｓｋｅｔｃｈｍａｐｏｆｓｏｕｔｈｐａｒｔｏｆＳｉｓｈｉｌｉｃｈａｎｇＭｏｕｎｔａｉｎａｒｅａ
[Abstract]:The black rock series of Madian formation at the bottom of Cambrian is the most important marine hydrocarbon source rock in the South North China Basin, which is rich in oil and gas. By analyzing the microscopic characteristics, fluorescence characteristics, homogenization temperature and composition of fluid inclusions in oil and gas display rocks, the types and stages of inclusions are summarized, and then the oil and gas evolution history of source rocks in Madian formation is inversed. The results show that the homogenization temperature ranges of brine inclusions and organic inclusions in Madian formation are 115 鈮，

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