發(fā)布時間：2018-05-06 09:45

  本文選題：頭臺油田 + 扶余油層�。� 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：大慶頭臺油田茂10-茂11區(qū)塊已進入開發(fā)后期階段,仍有相當(dāng)數(shù)量的剩余油分布在地下儲層中。主要受儲層構(gòu)型的控制,剩余油的分布特征表現(xiàn)為總體分散,局部集中。本文采用“層次分析”的研究思路,提出了一套地下曲流河及曲流型分流河道內(nèi)部儲層構(gòu)型分析方法,進一步總結(jié)出不同規(guī)模構(gòu)型要素控制的剩余油類型,為該區(qū)的進一步開發(fā)提供有力的地質(zhì)基礎(chǔ)。根據(jù)測井資料、巖心資料和物性資料,對研究區(qū)扶余油層復(fù)合砂體的分布特征和物性特征進行了全面認(rèn)識,結(jié)合地層精細(xì)對比理論和沉積模式,利用沉積間歇面對復(fù)合砂體進行劈分,完成了扶余油層566口井34個沉積時間單元的精細(xì)劃分和統(tǒng)層對比。在地層精細(xì)劃分與對比基礎(chǔ)上,利用砂厚、砂地比、密井網(wǎng)區(qū)解剖法,確定物源為西南方向。結(jié)合巖心特征觀察,識別出了2類相3類亞相22類沉積微相并建立了相應(yīng)的測井相模式,完成扶余油層34個沉積時間單元的平面沉積微相組合,并按照不同沉積亞相的河道規(guī)模對不同沉積時間單元進行了分類,對儲層有了深刻的認(rèn)識。在各沉積時間單元沉積微相刻畫基礎(chǔ)上,總結(jié)了廢棄河道、河道附近的相變、河道砂體高程差異、河道砂體厚度差異等四種方式來確定單一河道邊界。在單一河道識別基礎(chǔ)上,識別點壩,結(jié)合野外露頭、巖心資料、經(jīng)驗公式,求取點壩內(nèi)部側(cè)積層參數(shù),得出側(cè)積層的傾角3°~11°,側(cè)積層的個數(shù)2~5個,側(cè)積層傾向總是由垂直于廢棄河道正切點切線方向由凸岸指向凹岸,側(cè)積層大小為10~120m。在儲層構(gòu)型分析基礎(chǔ)上,建立水淹解釋圖版,繪制了重點層水淹程度分布圖,全面了解剩余油的分布情況。將儲層構(gòu)型和剩余油結(jié)合起來,總結(jié)了復(fù)合砂體構(gòu)型控制剩余油的3種類型。即復(fù)合河道內(nèi)河道間干擾及平面相變形成的剩余油;單河道砂體內(nèi)部正韻律及廢棄河道遮擋形成的剩余油;點壩內(nèi)部薄夾層遮擋形成的剩余油。
[Abstract]:Mao-10- Mao-11 block in Daqing Toutai Oilfield has entered the late stage of development, and a considerable amount of remaining oil is still distributed in the underground reservoir. Mainly controlled by reservoir configuration, the distribution characteristics of remaining oil are overall dispersion and local concentration. In this paper, a set of methods of reservoir configuration analysis of underground meandering river and meandering distributary channel are put forward, and the remaining oil types controlled by different scale configuration elements are summarized. To provide a strong geological basis for the further development of the area. Based on the well logging data, core data and physical property data, the distribution and physical properties of Fuyu reservoir composite sand body in the study area are comprehensively understood, combined with the theory of fine correlation of formation and the sedimentary model. The fine division of 34 sedimentary time units of 566 wells in Fuyu oil reservoir and the correlation of the formation of the series have been accomplished by dividing the sedimentary intermittently against the composite sand body. On the basis of fine stratigraphic division and correlation, by using the method of sand thickness, sand to ground ratio and the anatomy of dense well pattern, the source of material is determined to be southwest direction. Based on the observation of core characteristics, two types of facies, three types of subfacies and 22 types of sedimentary microfacies are identified, and the corresponding logging facies model is established. The planar sedimentary microfacies combination of 34 sedimentary time units in Fuyu reservoir is completed. The different sedimentary time units are classified according to the river scale of different sedimentary subfacies, and the reservoir is deeply understood. On the basis of sedimentary microfacies characterization of each sedimentary time unit, four ways to determine the single channel boundary are summarized, such as the abandoned channel, the phase transition near the channel, the elevation difference of the channel sand body, and the thickness difference of the channel sand body. On the basis of single channel identification, the point dam is identified, combined with field outcrop, core data and empirical formula, the parameters of the inner side layer of the point dam are obtained, and the inclination angle of the lateral accumulated layer is 3 擄~ 11 擄, and the number of the lateral accumulated layer is 2 ~ 5. The lateral accumulation tends from the tangent direction perpendicular to the tangent point of the abandoned river channel from the convex bank to the concave bank, and the lateral accumulated layer is 10 ~ 120m in size. On the basis of reservoir configuration analysis, the water-flooded interpretation chart was established, and the distribution map of water-flooded degree in key layers was drawn, and the distribution of remaining oil was fully understood. By combining reservoir configuration with remaining oil, three types of remaining oil controlled by composite sand body configuration are summarized. That is the residual oil formed by interchannel interference and plane phase change in the composite channel, the remaining oil formed by the positive rhythm in the sand body of a single channel and the residual oil formed by the shading of the abandoned channel, and the remaining oil formed by the thin interlayer in the point dam.
【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】：TE327;P618.13
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本文編號：1851831