本文關(guān)鍵詞： 古龍南地區(qū) 葡萄花油層 沉積微相 測井相模式　出處：《東北石油大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：古龍南地區(qū)葡萄花油層位于松遼盆地北部中央坳陷區(qū)齊家—古龍凹陷南端,研究區(qū)的目的層段是下白堊統(tǒng)的葡萄花油層,即姚家組一段。本文在前人的研究基礎(chǔ)上,以測井地質(zhì)學(xué)、湖泊沉積學(xué)以及河流精細(xì)沉積學(xué)為理論指導(dǎo),以巖心觀察描述為輔助,充分利用鉆井巖心、測井等資料,進(jìn)行沉積微相特征研究,對解決研究區(qū)復(fù)雜的油水關(guān)系具有重要的指導(dǎo)意義。根據(jù)研究區(qū)內(nèi)的巖心觀察,結(jié)合物源、測井等資料,建立區(qū)域骨架剖面,從而進(jìn)行地層劃分對比,將研究區(qū)分為PⅠ上、PⅠ中、PⅠ下3個砂巖組和PⅠ1~PⅠ88個小層。地層總體呈現(xiàn)西北地區(qū)厚、東南地區(qū)薄的特征。通過重礦物分析、ZTR指數(shù)分布圖以及砂巖百分含量的綜合判定,認(rèn)為研究區(qū)主要受北部物源控制,西部物源為次要物源。依據(jù)顏色、結(jié)構(gòu)、構(gòu)造和古生物等相標(biāo)志,識別出水下分流河道、河口壩、水下決口扇、水下分流間灣、席狀砂和遠(yuǎn)砂壩6種微相類型,其中水下分流河道的連通性最好,構(gòu)成葡萄花油層的骨架砂體,河口壩砂體和席狀砂砂體發(fā)育頻率高但單期厚度略薄,二者的連通性較好,西部和北部因靠近物源,河道較多、規(guī)模較大;古龍南地區(qū)葡萄花油層的沉積環(huán)境以水下為主,主要為濱淺湖環(huán)境下的三角洲前緣沉積,在其沉積時期,總體上表現(xiàn)為水體逐漸變淺,水退進(jìn)積,再加深,砂體萎縮的沉積序列。
[Abstract]:The Gulongnan area is located at the southern end of Qijia-Gulong depression in the northern central depression of Songliao Basin. The target layer of the study area is the Gaohua oil formation of the Lower Cretaceous, that is, the first member of the Yaojia formation. Under the guidance of logging geology, lake sedimentology and fluvial fine sedimentology, and with core observation and description as assistant, the sedimentary microfacies characteristics are studied by using drilling core and logging data. It is of great guiding significance to solve the complex oil-water relationship in the study area. According to the core observation, combining with the data of source, logging and so on, the regional skeleton profile is established to carry out stratigraphic division and correlation. The study is divided into 3 sandstone formations under P 鈪，

本文編號：1505198