【摘要】：通過(guò)對(duì)倫坡拉盆地的地震、測(cè)井、巖心、露頭等資料的綜合分析,建立了倫坡拉盆地牛堡組的層序地層格架,將牛堡組劃分為1個(gè)一級(jí)層序,3個(gè)二級(jí)層序(對(duì)應(yīng)于牛一段、牛二段、牛三段地層),7個(gè)三級(jí)層序(自下而上依次為SQ1、SQ2、SQ3、SQ4、SQ5、SQ6和SQ7);依據(jù)牛堡組的層序地層特征,歸納出彎折帶型和斷坡帶型2種層序構(gòu)成樣式。彎折帶型層序構(gòu)成樣式中,高位體系域在緩坡區(qū)發(fā)育的扇三角洲、低位體系域在坡折內(nèi)發(fā)育的大型低位扇,以及斷坡帶型層序構(gòu)成樣式中,坡折內(nèi)發(fā)育的高位辮狀河三角洲與大型低位扇,為勘探儲(chǔ)層的有利目標(biāo)。通過(guò)對(duì)各層序的沉積體系時(shí)空展布的研究,建立了研究區(qū)牛堡組沉積期的沉積模式,并認(rèn)為該時(shí)期主要發(fā)育3大連片砂體,即北部、西南部和東部砂體,砂體的展布受坡折帶控制明顯。
[Abstract]:Based on the comprehensive analysis of seismic, logging, core and outcrop data in Luompola Basin, the sequence stratigraphic framework of Niubu formation in Luompola Basin is established. The Niubu formation is divided into one first order sequence and three second order sequences (corresponding to Niuyi formation). There are seven third-order sequences (SQ1SQ2SQ2SQ3SQ3SQ4SQ5SQ6 and SQ7) in Niu member, Niu 3 formation, and according to the sequence stratigraphic characteristics of Niupu formation, two types of sequence composition patterns, bended zone type and fault slope zone type, are concluded. In the bended belt type sequence formation style, the upper system tract is developed in the fan delta in the gentle slope area, the low position system tract develops in the large low fan in the slope break, and the fault slope belt type sequence forms the style, the low position system tract develops in the gentle slope area, the low position system tract develops in the slope break type sequence constitutes the style, High braided river delta and large low fan developed in slope break are favorable targets for reservoir exploration. Based on the study of the temporal and spatial distribution of the sedimentary systems of each sequence, the sedimentary model of the Niupu formation in the study area was established, and it was considered that there were mainly 3 pieces of sand bodies in Dalian, namely, the northern, southwest and eastern sandbodies. The distribution of sand body is obviously controlled by slope break zone.
【作者單位】： 中國(guó)地質(zhì)大學(xué)(武漢)構(gòu)造與油氣資源教育部重點(diǎn)實(shí)驗(yàn)室;中國(guó)地質(zhì)大學(xué)(武漢)資源學(xué)院;中國(guó)石化勘探南方分公司;
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(“973”計(jì)劃)項(xiàng)目(SQ2013CB021013) 國(guó)家自然科學(xué)基金項(xiàng)目(41002045)資助
【分類(lèi)號(hào)】：P618.13

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