本文選題：細(xì)粒沉積巖 + 巖相��； 參考：《油氣地質(zhì)與采收率》2017年01期

【摘要】：綜合運(yùn)用巖心觀察、薄片鑒定、X衍射和掃描電鏡等分析方法,對東營凹陷沙三段下亞段細(xì)粒沉積巖礦物組成、沉積構(gòu)造和紋層類型及成因進(jìn)行精細(xì)刻畫,在此基礎(chǔ)上建立細(xì)粒沉積巖巖相劃分方案,并以樊頁1井沙三段下亞段為例分析其巖相垂向演化特征。東營凹陷沙三段下亞段細(xì)粒沉積巖具有礦物組成復(fù)雜多變、受底流微弱改造作用頻繁及紋層類型豐富的特點(diǎn)。參考礦物組成和沉積構(gòu)造,研究區(qū)發(fā)育11種巖相類型,其中平直紋層粘土巖相、夾層灰?guī)r相、平直紋層灰?guī)r相、不平直紋層灰?guī)r相、平直紋層混合巖相、不平直紋層混合巖相和塊狀混合巖相是最為發(fā)育的7種巖相類型,不同巖相發(fā)育環(huán)境差異性明顯。細(xì)粒沉積巖巖相分布模式受古水深和古氣候綜合控制,在氣候干冷、深水還原環(huán)境下主要發(fā)育平直紋層粘土巖相;氣候由干冷向暖濕轉(zhuǎn)變時形成夾層灰?guī)r相;在氣候半暖濕的廣闊深湖環(huán)境下發(fā)育平直紋層灰?guī)r相;在氣候最為暖濕時期,底流發(fā)育,形成不平直紋層灰?guī)r相;隨著水深減小,水體分層不穩(wěn)定,加之氣候逐漸干冷,形成平直紋層混合巖相,若底流發(fā)育,則形成不平直紋層混合巖相;在半氧化—半還原的淺湖環(huán)境下發(fā)育塊狀混合巖相。
[Abstract]:By means of core observation, thin slice identification, X-ray diffraction and scanning electron microscopy, the mineral composition, sedimentary structure, type and origin of fine sedimentary rocks in the lower submember of the third member of Sha in Dongying Sag are described in detail. On the basis of this, the facies division scheme of fine-grained sedimentary rocks is established, and the vertical evolution characteristics of its lithofacies are analyzed by taking the lower sub-member of Sha-3 member of well Fan Pian 1 as an example. The fine-grained sedimentary rocks of the lower member of the third member of the Shahejie formation in Dongying depression are characterized by complex mineral composition frequent weak transformation of the bottom flow and rich types of laminae. With reference to mineral composition and sedimentary structure, there are 11 types of lithofacies developed in the study area, including plain grain clay facies, intercalated limestone facies, flat grain limestone facies, irregular grain limestone facies, flat grain mixed lithofacies, and so on. The migmatite facies and block migmatite facies are the most developed seven lithofacies types, and the development environment of different lithofacies is obviously different. The lithofacies distribution model of fine-grained sedimentary rocks is controlled by paleo water depth and paleoclimate. In dry and cold climate and deep water reduction environment, clay facies of flat grain are mainly developed, and intercalated limestone facies are formed when climate changes from dry cold to warm and wet. In the wide deep lake environment with semi-warm and humid climate, the plagitic limestone facies is developed; in the most warm and humid climate, the bottom flow develops, forming the irregular striated limestone facies; with the decrease of the water depth, the water layers are unstable and the climate is gradually dry and cold. The mixed lithofacies of the flat grain layer is formed, if the bottom current is developed, the mixed lithofacies of the irregular grain layer is formed, and the massive mixed rock facies is developed in the semi-oxidation-half-reduction shallow lake environment.
【作者單位】： 中國石化勝利油田分公司勘探開發(fā)研究院;中國石油大學(xué)(華東)地球科學(xué)與技術(shù)學(xué)院;山東省地質(zhì)調(diào)查院;
【基金】：國家“973”計劃“陸相頁巖油儲集空間與發(fā)育模式”(2014CB239102) 國家科技重大專項“濟(jì)陽坳陷頁巖油勘探開發(fā)目標(biāo)評價”(2017ZX05049-004) 山東省地質(zhì)勘查項目“山東省頁巖氣成礦條件研究和資源潛力預(yù)測”(魯勘字(2013)1號)
【分類號】：P618.13;P512.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 孔祥鑫;姜在興;韓超;鄭麗婧;楊葉們;劉雅萍;;束鹿凹陷沙三段下亞段細(xì)粒碳酸鹽紋層特征與儲集意義[J];油氣地質(zhì)與采收率;2016年04期

2 冉波;劉樹根;孫瑋;葉sズ，

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