本文關(guān)鍵詞：北東一區(qū)薩爾圖油層地震解釋及儲層預測　出處：《東北石油大學》2015年碩士論文　論文類型：學位論文

  更多相關(guān)文章： 薩爾圖油層 構(gòu)造解釋 儲層預測 地震反演 沉積相

【摘要】：本論文從研究區(qū)當前實際生產(chǎn)的地質(zhì)需求出發(fā),即構(gòu)造認識精度低和井間砂體刻畫難兩個問題,將密井網(wǎng)信息與三維地震結(jié)合起來,開展了井震聯(lián)合構(gòu)造解釋和儲層預測相關(guān)技術(shù)研究,深化了研究區(qū)地質(zhì)認識,成果可以應用在指導擴邊水平井部署中。在構(gòu)造刻畫上,運用了密井網(wǎng)條件地震地質(zhì)層位標定技術(shù),實現(xiàn)多井標定的一致和統(tǒng)一。依據(jù)波阻特征將SI、SII劃分為標準層,SIII、PI為非標準層;利用密井網(wǎng)條件井分層控制完成薩爾圖油層各油層組頂面的層位解釋。同時,應用構(gòu)造趨勢面分析法、三維切片技術(shù)進行微幅度構(gòu)造的識別。最終,編制了SI、SII、SIII、PI共4個層位頂面的高精度構(gòu)造圖。在構(gòu)造解釋的基礎上,形成了多井約束地震反演技術(shù),有效識別了1m以上砂巖(條件是泥巖隔層大于3m)。開展井震聯(lián)合繪制沉積相帶工作,對研究區(qū)發(fā)育的10種砂體類型空間展布形態(tài)進行精細描述。在開發(fā)應用上,利用精細構(gòu)造和儲層預測結(jié)果,進行開發(fā)潛力區(qū)預測及井位優(yōu)選。通過精細構(gòu)造解釋,有效識別出構(gòu)造幅度5m以上,閉合面積0.25km2以上微幅度構(gòu)造8個;重新落實了三個油層組過渡帶油水邊界線,相比于原油水邊界線均向外移動20m。通過儲層預測可知,砂體在全區(qū)較為發(fā)育,縱向上砂巖平均厚度逐漸增加,橫向上砂體的展布面積也逐漸增大,反映從上到下砂體的發(fā)育規(guī)模越來越大。通過沉積相刻畫可知,規(guī)模大的坨狀砂體變化不大,僅個別部位出現(xiàn)砂體尖滅;曲流帶砂體內(nèi)部出現(xiàn)斑狀的薄層砂,單一發(fā)育的曲流河河道砂體連續(xù)性變差;原砂巖不發(fā)育井區(qū),井間新增一些規(guī)模較小的水下分流河道和單砂體。綜合構(gòu)造解釋和儲層預測結(jié)果,根據(jù)砂巖厚度大小,劃分了一類、二類和三類潛力區(qū),確定一口水平井井位。
[Abstract]:In this paper, according to the geological demand of actual production in the research area, that is, the problem of low structural recognition accuracy and difficult delineation of cross-well sand body, the information of dense well pattern is combined with three-dimensional seismic. The related techniques of well seismic combined structural interpretation and reservoir prediction have been studied, and the geological understanding of the study area has been deepened. The results can be applied to guiding the deployment of horizontal wells along the extended edge and structural characterization. The technique of seismic geological horizon calibration under dense well pattern condition is used to realize the consistency and unity of multi-well calibration. According to the wave resistance characteristic, SINSII is divided into standard layer SIIII-PI as non-standard layer. The stratification control is used to complete the interpretation of the top surface of each reservoir in Saltu reservoir. At the same time, the identification of micro-amplitude structure is carried out by using the method of structural trend surface analysis and three-dimensional slice technology. A high precision structural map of four horizon top surfaces is compiled. Based on the structural interpretation, a multi-well constrained seismic inversion technique is developed. The sandstone above 1m is effectively identified (the condition is that the mudstone interval is more than 3 m), and the work of combining well and earthquake to draw sedimentary facies zone is carried out. The spatial distribution patterns of 10 types of sand bodies developed in the study area are described in detail. In development and application, fine structures and reservoir prediction results are used. Through fine structure interpretation, 8 structures with structure amplitude above 5m and closing area above 0.25 km ~ 2 can be effectively identified. The oil-water boundary line of the transition zone of the three reservoirs has been re-implemented, and compared with the oil-water boundary line, the oil-water boundary line has been moved outward by 20m.The reservoir prediction shows that the sand body is relatively developed in the whole area, and the average thickness of sandstone increases gradually in the longitudinal direction. The distribution area of the transverse sand bodies also increases gradually, reflecting the growing scale of sand bodies from the top to the bottom. Through the sedimentary facies characterization, it can be seen that there is little change in the large scale lump sandbodies, and only a few parts have the sand bodies out; There are porphyry thin-layer sand in the sand body of the meandering zone, and the continuity of the single meandering river channel sand body becomes worse. Some small subaqueous distributary channels and single sand bodies have been added between wells in the undeveloped well area of the original sandstone. According to the results of structural interpretation and reservoir prediction, the potential areas of one, two and three types have been divided according to the thickness of sandstone. Determine the location of a horizontal well.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P618.13;P631.4

【參考文獻】

相關(guān)碩士學位論文 前1條

1 李雪松;南二西薩葡高地震構(gòu)造解釋與開發(fā)潛力分析[D];東北石油大學;2014年

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本文編號：1431853