發(fā)布時間：2018-04-13 10:43

  本文選題：精細(xì)解剖 + 沉積微相　； 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：大慶油田已經(jīng)進入高含水后期開發(fā)階段,但仍有相當(dāng)部分的剩余油賦存在地下儲層中,河流—三角洲陸相沉積復(fù)雜,非均質(zhì)性嚴(yán)重,是影響剩余油分布的主要因素,要摸清地下儲層剩余油的分布規(guī)律,就需要對儲層不同環(huán)境與類型進行精細(xì)解剖。應(yīng)用高分辨率層序地層學(xué)與沉積學(xué)原理,按照“結(jié)合物源、分級控制、旋回對比、考慮斷層”的原則,對頭臺油田茂10、茂11區(qū)塊扶余油層進行精細(xì)的小層劃分與對比,建立起392口井34個時間單元的層序地層格架。再根據(jù)不同沉積微相特征建立起三角洲、曲流河2種沉積相、3種沉積亞相、23種微相的測井相模式。其中微相中包含曲流河道微相、分流河道微相、溢岸砂微相、席狀砂微相等。在此基礎(chǔ)上精確繪制34張平面沉積微相圖,并對其精細(xì)描述研究,總結(jié)出各微相砂體展布規(guī)律。在此基礎(chǔ)上對扶余油層34個時間單元內(nèi)儲層進行有效砂巖厚度、孔隙度、滲透率、滲透率變異系數(shù)、級差等參數(shù)以及水淹情況的分析研究,全面了解主力油層儲層的非均質(zhì)性。確定頭臺油田扶余油層的剩余油類型有河道邊部型剩余油、差油層滯留型剩余油、優(yōu)勢運移通道屏蔽型剩余油。建議在研究區(qū)下一步剩余油開采中:開發(fā)區(qū)加密、開發(fā)區(qū)擴邊。
[Abstract]:Daqing Oilfield has entered the stage of high water cut late development, but there is still a considerable amount of remaining oil in the underground reservoir. The fluvial delta continental facies deposition is complicated and the heterogeneity is serious, which is the main factor affecting the distribution of remaining oil.In order to understand the distribution of remaining oil in underground reservoir, it is necessary to anatomize the different environments and types of reservoir.Based on the principles of high-resolution sequence stratigraphy and sedimentology, according to the principle of "combination source, grading control, cyclic correlation, and considering faults", the fine sublayer division and correlation of Fuyu oil reservoirs in Mao-10 and Mao-11 blocks of Toutou Oilfield are carried out.A sequence stratigraphic framework of 34 time units in 392 wells was established.According to the characteristics of different sedimentary microfacies, the logging facies models of delta, meandering river, two sedimentary facies and three sedimentary subfacies are established.The microfacies include meander channel microfacies, distributary channel microfacies, overflowing sand microfacies and sheet sand microfacies.On this basis, 34 planar sedimentary microfacies diagrams are accurately drawn, and their fine description is studied, and the distribution law of each microfacies sand body is summarized.On this basis, the effective sandstone thickness, porosity, permeability, coefficient of variation of permeability, coefficient of variation of permeability and water flooding are analyzed and studied in 34 time units of Fuyu reservoir, and the heterogeneity of the main reservoir is fully understood.It is determined that the remaining oil types of Fuyu reservoir in Toutai Oilfield are river side residual oil, differential reservoir residual oil and dominant migration channel shield remaining oil.It is suggested that in the next step of remaining oil production in the research area, the development zone should be encrypted and the development zone expanded.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P618.13
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本文編號：1744150