本文選題：頁巖氣系統(tǒng) + 石炭系�。� 參考：《地學(xué)前緣》2016年05期

【摘要】：石炭系是柴達木盆地油氣勘探的新層系,油氣勘探程度低,但發(fā)育厚度大的高有機質(zhì)豐度泥頁巖,具有很好的頁巖氣資源潛力。通過對德令哈坳陷石炭系露頭剖面進行實測和鉆井巖心分析,明確石炭系泥頁巖空間展布特征。測定樣品有機地球化學(xué)參數(shù)、孔滲特征,并且進行等溫吸附和滲流實驗,分析其儲集特征。結(jié)合德參1井盆地模擬分析,研究石炭系頁巖氣成藏事件,劃分德令哈坳陷石炭系頁巖氣系統(tǒng)。研究表明:石炭系泥頁巖廣泛發(fā)育,埋深較大但未發(fā)生變質(zhì);泥頁巖有機質(zhì)豐度較高,有機質(zhì)類型主要為Ⅱ2型和Ⅲ型,處于成熟—高成熟演化階段;上石炭統(tǒng)泥頁巖發(fā)育優(yōu)于下石炭統(tǒng);泥頁巖表現(xiàn)為低孔低滲特征,孔隙度在1.89%~5.48%,滲透率為(0.115~2.7)×10-7μm2;上覆地層發(fā)育厚層泥頁巖可以提供良好的蓋層條件;古近紀(jì)末—現(xiàn)今為頁巖氣系統(tǒng)形成的關(guān)鍵時期;上石炭統(tǒng)克魯克組鉆遇天然氣顯示,證實了德令哈坳陷石炭系頁巖氣系統(tǒng)的存在。在泥頁巖厚度、埋深、TOC含量、成熟度等條件綜合評價基礎(chǔ)上,將德令哈坳陷劃分為德令哈頁巖氣系統(tǒng)與埃北頁巖氣系統(tǒng)。
[Abstract]:Carboniferous is a new series of oil and gas exploration in Qaidam Basin. The exploration degree of Carboniferous is low, but the shale shale with high organic matter abundance has a good potential of shale gas resources. The spatial distribution characteristics of Carboniferous shale in the Carboniferous are determined by measuring the outcrop profile of Carboniferous system in Delingha depression and analyzing the drilling core. The organic geochemical parameters, pore and permeability characteristics of the samples were measured, and isothermal adsorption and percolation experiments were carried out to analyze their reservoir characteristics. Based on the basin simulation analysis of Decan 1 well, the hydrocarbon accumulation events of Carboniferous shale gas are studied and the Carboniferous shale gas system in Delingha depression is divided. The results show that: Carboniferous shale is widely developed, buried deep but not metamorphosed, the organic matter abundance of shale is relatively high, and the organic matter types are mainly type 鈪，

本文編號：1801415