【摘要】：柴達(dá)木盆地石炭系露頭、鉆井資料均揭示,其為海相沉積烴源巖,且石炭系泥頁巖氣展現(xiàn)出良好的勘探前景。對(duì)柴達(dá)木盆地東部石炭系泥頁巖沉積環(huán)境、有機(jī)質(zhì)豐度、類型和演化程度進(jìn)行綜合評(píng)價(jià),利用野外露頭、探井、地震、非震等資料證實(shí)了石炭系的殘留及分布。研究認(rèn)為,柴東地區(qū)石炭系泥頁巖主要集中在上石炭統(tǒng)濱岸潮坪沉積的克魯克組,發(fā)育炭質(zhì)泥頁巖、暗色泥巖2種烴源巖,有機(jī)碳均值為3.08%,有機(jī)質(zhì)類型為Ⅱ—Ⅲ型,處于成熟-高成熟演化階段,73%的樣品達(dá)到中等-好烴源巖。平面上主要分布于尕丘、歐南、霍布遜和德令哈凹陷,分隔性較強(qiáng),具有多個(gè)厚度中心,其中以歐南凹陷石灰溝地區(qū)和霍布遜凹陷落實(shí)程度高、資源潛力大,是泥頁巖氣最有利的發(fā)育區(qū)。
[Abstract]:Carboniferous outcrop and drilling data in Qaidam Basin reveal that it is marine sedimentary source rock and Carboniferous shale gas shows a good exploration prospect. The sedimentary environment, organic matter abundance, type and evolution degree of Carboniferous shale in eastern Qaidam Basin were comprehensively evaluated. The residual and distribution of Carboniferous were confirmed by field outcrop, exploration well, earthquake and non-seismic data. The study shows that the Carboniferous shale in the eastern Qaidong area is mainly concentrated in the Kruke formation of the upper Carboniferous shoreline tidal flat. Two hydrocarbon source rocks, carbonaceous shale and dark mudstone, are developed. The organic carbon mean value is 3.08 and the organic matter type is type 鈪，

本文編號(hào)：2237020