發(fā)布時(shí)間：2019-08-09 17:27

【摘要】：長寧頁巖氣田是中國頁巖氣勘探和開發(fā)最早的頁巖氣田之一。對(duì)長寧頁巖氣田寧211井鉆井剖面的五峰組—龍馬溪組黑色頁巖開展了巖石地層及生物地層研究,建立了從上奧陶統(tǒng)凱迪階上部的Dicellograptus complexus帶(WF2帶)至志留系蘭多維列統(tǒng)埃隆階頂部的Stimulograptus sedgwickii帶(LM8帶)的12個(gè)連續(xù)生物帶和組合,這一生物地層序列可實(shí)現(xiàn)區(qū)域和全球的精確對(duì)比。通過巖石地層和和生物地層的對(duì)比,發(fā)現(xiàn)各巖石地層與生物帶具有極強(qiáng)的耦合關(guān)系,寧211井主要目的層五峰組—龍馬溪組龍一1亞段大致對(duì)應(yīng)Dicellograptus complexus帶(WF2帶)-Coronograptus cyphus帶(LM5帶)。長寧頁巖氣田與長寧背斜及其周緣具有相同的沉積環(huán)境。
[Abstract]:Changning shale gas field is one of the earliest shale gas fields in China. The lithostratigraphy and biostratigraphy of the black shale of Longmaxi formation, which is the Wufeng formation and Longmaxi formation of well Ning 211 in Changning shale gas field, have been studied. Twelve continuous biological zones and assemblages from the Dicellograptus complexus belt (WF2 zone) in the upper part of the Upper Ordovician Kaidi stage to the Stimulograptus sedgwickii belt (LM8 belt) at the top of the Silurian Lanyilei Elong stage have been established. This biostratigraphy sequence can be accurately compared between the region and the world. Through the correlation between lithostratigraphy and biostratigraphy, it is found that each lithostratigraphy has a strong coupling relationship with biological belts. The main target layer of well Ning211, Wufeng formation-Longmaxi formation, is roughly corresponding to Dicellograptus complexus belt (WF2 belt)-Coronograptus cyphus zone (LM5 belt). Changning shale gas field has the same sedimentary environment as Changning anticlinal and its circumference.
【作者單位】： 中國石油西南油氣田公司勘探開發(fā)研究院;頁巖氣評(píng)價(jià)與開采四川省重點(diǎn)實(shí)驗(yàn)室;中國石油西南油氣田公司頁巖氣勘探開發(fā)部;中國石油西南油氣田公司華油公司;
【基金】：國家自然科學(xué)基金青年科學(xué)基金項(xiàng)目(No.41502150) 四川省科技支撐計(jì)劃項(xiàng)目“四川盆地下古生界頁巖氣資源潛力評(píng)價(jià)及選區(qū)”(2015SZ0001)
【分類號(hào)】：P618.13;Q911

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