本文關(guān)鍵詞： 沉積微相 定量識別 測井曲線 相似度求取　出處：《中國地質(zhì)大學(xué)(北京)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：進行沉積微相研究,可以進一步確定砂體形態(tài)、展布特征、相帶的寬度及縱橫向連通的非均質(zhì)性。而在識別沉積微相技術(shù)由定性到定量的轉(zhuǎn)變過程中,識別手段始終局限于單井沉積微相的定量識別。本文則在單井識別的基礎(chǔ)上,力求利用井間測井曲線相似度進行沉積微相的定量判別,提高識別精度,量化相界線。論文以克拉瑪依油田齊古組稠油油藏為例,結(jié)合前人對本區(qū)沉積環(huán)境的認識以及小層精細對比的結(jié)果,總結(jié)分析了研究區(qū)塊的區(qū)域地質(zhì)概況。在此基礎(chǔ)上,總結(jié)歸納了本區(qū)沉積環(huán)境以及沉積微相類型。對定量識別沉積微相的方法進行了研究。根據(jù)以往定量識別技術(shù)的研究,擬定單井沉積微相類型的定量確定方法為判別分析法,并在此基礎(chǔ)上,利用閔式距離求取測井曲線鄰井相似度進而實現(xiàn)平面上沉積微相的定量識別。從而開展繪制沉積微相平面圖以及垂相疊置關(guān)系的研究。最終通過確定性建模的方法實現(xiàn)沉積微相量化由二維到三維的轉(zhuǎn)變。在整個過程中,結(jié)合Visual Basic 6.0開發(fā),客戶端采用Windows平臺。通過編寫的自動識別程序和專業(yè)地質(zhì)繪圖軟件Discovery相結(jié)合,可以達到量化識別沉積微相的目的,且由于借助計算機強大的運算能力,相對于人工判相來說,也提高了工作效率。從本文的研究可以總結(jié)出以下研究成果:1、以沉積學(xué)理論為指導(dǎo),利用巖心、測井等資料,結(jié)合前人研究成果,分析了本區(qū)地層特征、構(gòu)造特征及砂體展布特征;2、在前人定量識別沉積微相的基礎(chǔ)上引入了鄰井關(guān)系,對于相界線的量化有很大幫助;3、編制了自動識別沉積微相及鄰井相似度的程序;4、總結(jié)出本區(qū)沉積微相的分布特點。九6區(qū)齊古組2砂組平面上發(fā)育水下分流河道、河口壩、串溝;5、采用確定性建模的方法建立了本區(qū)的地質(zhì)模型,從而實現(xiàn)了定量識別沉積微相由面到體的轉(zhuǎn)變,得到的模型統(tǒng)計特征與井上分布特征較吻合,且符合實際地質(zhì)意義,能較好地為屬性模型的建立做準備。
[Abstract]:The study of sedimentary microfacies can further determine the sand body shape, distribution characteristics, the width of facies belt and the heterogeneity of longitudinal and transverse connectivity. However, in the process of identifying sedimentary microfacies from qualitative to quantitative, The recognition method is always limited to the quantitative identification of sedimentary microfacies in single well. On the basis of single well recognition, this paper tries to use the similarity of logging curves between wells to make quantitative discrimination of sedimentary microfacies and improve the recognition accuracy. Quantitative facies boundary. Taking Qigu formation heavy oil reservoir in Karamay oilfield as an example, combining with the previous understanding of sedimentary environment and the results of fine correlation of small layers, the paper summarizes and analyzes the regional geological situation of the study block. The sedimentary environment and sedimentary microfacies types in this area are summarized and summarized. The method of quantitative identification of sedimentary microfacies is studied. According to the previous research of quantitative identification technology, the quantitative determination method of sedimentary microfacies in single well is developed as discriminant analysis method. And on this basis, The similarity of adjacent wells of log curves is obtained by Min distance, and then the quantitative identification of sedimentary microfacies on plane is realized. The study of drawing sedimentary microfacies plane map and superposition relation of vertical facies is carried out. Finally, the square of deterministic modeling is adopted. During the whole process, the quantitative transformation of sedimentary microfacies from two to three dimensions is realized. Combined with the development of Visual Basic 6.0, the client adopts Windows platform. By combining the automatic identification program written with the professional geological drawing software Discovery, the purpose of quantification identification of sedimentary microfacies can be achieved, and because of the powerful computing ability of computer, Compared with artificial phase judgment, the work efficiency is also improved. From the research in this paper, the following research results can be summarized as follows: 1. Guided by sedimentology theory, using core, logging and other data, combined with previous research results, the stratigraphic characteristics of this area are analyzed. Based on the quantitative identification of sedimentary microfacies by predecessors, the relationship between adjacent wells is introduced. For the quantitative analysis of facies boundary, a program for automatic identification of sedimentary microfacies and similarity of adjacent wells is compiled, and the distribution characteristics of sedimentary microfacies in this area are summarized. The subaqueous distributary channel and estuarine dam are developed on the plane of sand formation 2 of Qigu formation in area 96. By using the deterministic modeling method, the geological model of this area is established, and the transformation of sedimentary microfacies from plane to body is realized. The statistical characteristics of the model are in good agreement with the distribution characteristics of the well and accord with the actual geological significance. Can better prepare for the establishment of attribute model.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P618.13

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