發(fā)布時間：2018-05-15 19:29

  本文選題：延10儲層 + 儲層評價　； 參考：《西安石油大學》2015年碩士論文

【摘要】：馬嶺油田M井區(qū)位于鄂爾多斯盆地陜北斜坡西部偏南處,主要的開發(fā)層序為侏羅系延安組延10儲層。隨著油田開發(fā)的不斷深入,研究區(qū)地質(zhì)研究薄弱,地質(zhì)認識不夠全面深入,無法滿足油田進一步開發(fā)的需要�；诖碎_展了鄂爾多斯盆地馬嶺油田M區(qū)延10儲集層精細地質(zhì)研究,為下一步的勘探及開發(fā)建產(chǎn)工作打好堅實的基礎。本論文依據(jù)研究區(qū)巖心、測井及生產(chǎn)動態(tài)資料,首先開展了研究區(qū)地層劃分與對比,建立了研究區(qū)精準地層對比格架,揭示了研究區(qū)砂體頂部微構(gòu)造特征、分析了砂體厚度平面展布特征;其次開展了儲層電性特征研究,揭示了儲層電性宏觀分布特征、分析了儲層電性特征,進而開展了儲層參數(shù)解釋模型建模研究,基于四性關系分析,建立了儲層泥質(zhì)含量、孔隙度、滲透率和含油飽和度測井解釋模型;再次,分別開展研究區(qū)沉積微相和非均質(zhì)性研究,詳細刻畫研究區(qū)儲集層沉積特征和非均質(zhì)性特征;最后基于研究區(qū)儲層特征開展了流動單元研究,并利用生產(chǎn)動態(tài)資料對流動單元劃分進行驗證。研究表明:研究區(qū)延10儲層發(fā)育延101、延102兩個小層。研究區(qū)位于構(gòu)造鼻隆上,延10各油組屬于西傾單斜構(gòu)造,呈現(xiàn)出中部高、四面較低、北東部較為平緩的變低的鼻狀隆起局部馬鞍狀隆起,鞍部走向為東西向,構(gòu)造特征具有一定的繼承性,并且延102構(gòu)造幅度變化較大。研究區(qū)砂體平面上呈現(xiàn)條帶狀分布,具有較好的延伸性,并且西南部砂體厚度較大。本區(qū)延10油層孔隙度分布范圍為15-18%,平均孔隙度16.7%,滲透率分布范圍4-32×10-3μm2,平均為8.6×10-3μm2,研究區(qū)延10層位于河間丘上,其含油性受古地貌及巖性共同控制,為典型的構(gòu)造巖性油氣藏。頂部的延101為主要的含油層系,含油飽和度較高,下部的延102,為邊底水,屬于水層。本區(qū)延10儲集層滲透率與孔隙度有較好的相關性,在研究區(qū)中部表現(xiàn)出物性最好;延10油層組主要沉積相為邊灘沉積、天然堤、河漫灘沉積。延10的儲集層和油氣分布受曲流河沉積影響,呈由南西向北東方向的條帶狀分布,至東北部河道消失;在延10儲層中,延101的非均質(zhì)性較弱,延102非均質(zhì)性較強。本區(qū)延10油藏在平面分布上受構(gòu)造、沉積微相、儲集層非均質(zhì)性影響顯著,沿著河道方向,尤其是在研究區(qū)中部含油飽和度較高;以取心井的孔隙度、滲透率、流動層帶指數(shù)等參數(shù)進行樣品聚類分析,在此基礎上對非取心井進行判定,劃分出能綜合反映儲層儲集、滲流及含油氣性等多種信息的Ⅰ類、Ⅱ類、Ⅲ類流動單元;本次研究的開展和完成,為油田下一步油藏的挖潛工作奠定了基礎,同時對鄰區(qū)地質(zhì)工作的開展具有參考意義。
[Abstract]:M well area in Maling Oilfield is located in the south west of northern Shaanxi slope in Ordos Basin. The main development sequence is Yan10 reservoir of Yanan formation of Jurassic system. With the deepening of oilfield development, geological research in the research area is weak and geological understanding is not comprehensive enough to meet the needs of further development of oil field. Based on this, the fine geological study of Yan 10 reservoir in M area of Maling Oilfield in Ordos Basin has been carried out, which will lay a solid foundation for the next exploration and development work. Based on the core, logging and production data of the study area, the stratigraphic division and correlation of the study area are first carried out in this paper, and the correlation framework of the precise formation in the study area is established, which reveals the characteristics of microstructures at the top of the sand body in the study area. Secondly, the characteristics of reservoir electrical properties are studied, the macroscopic distribution characteristics of reservoir electrical properties are revealed, the characteristics of reservoir electrical properties are analyzed, and the modeling of reservoir parameter interpretation model is carried out. Based on the relationship analysis of four properties, the logging interpretation models of shale content, porosity, permeability and oil saturation are established. Thirdly, the sedimentary microfacies and heterogeneity of the studied area are studied respectively. The characteristics of reservoir deposition and heterogeneity in the study area are described in detail. Finally, the flow unit is studied based on the reservoir characteristics in the study area, and the division of the flow unit is verified by using the production dynamic data. The results show that there are 101 and 102 sublayers in Yan 10 reservoir in the study area. The study area is located on the structural nose uplift, and each oil group of Yan 10 belongs to the westernized monoclinal structure, with a high middle, low four sides, a lower local saddle uplift in the east and north, and an east-west direction of the saddle. The structural characteristics have certain inheritance, and the amplitude of extension 102 structure changes greatly. The sand bodies in the study area show strip distribution in the plane with good extensibility, and the thickness of the sand bodies in the southwest is larger. The porosity distribution ranges from 15 to 18, average porosity is 16.7m, permeability distribution ranges from 4-32 脳 10 -3 渭 m 2 to 8.6 脳 10 -3 渭 m 2 in this area. The 10 layers in the study area are located on the Hejian hill, and their oil content is controlled by paleogeomorphology and lithology together, which is a typical structural lithologic reservoir. The extension 101 at the top is the main oil-bearing system, and the oil saturation is higher, and the extension of the lower part is 102, which is the edge and bottom water and belongs to the water layer. The permeability and porosity of Yan 10 reservoir in this area have good correlation, and the physical properties are the best in the middle of the study area, and the main sedimentary facies of Yan 10 reservoir group are shoal deposit, natural embankment and floodplain deposit. The reservoir and oil and gas distribution of Yan 10 are affected by meandering river sedimentation, which is a strip distribution from the south west to the north east, and disappears to the northeast river, while in the Yan 10 reservoir, the heterogeneity of Yan 101 is weak, and the heterogeneity of Yan 102 is stronger. The reservoir of Yan 10 in this area is obviously influenced by structure, sedimentary microfacies and reservoir heterogeneity in plane distribution, and has high oil saturation along the channel direction, especially in the middle of the study area, in order to determine the porosity and permeability of coring wells, On the basis of sample cluster analysis of flow zone index and other parameters, the non-coring wells are judged, and the flow units of class 鈪，

本文編號：1893616