發(fā)布時間：2019-04-18 17:28

【摘要】：葡北油田三斷塊位于松遼盆地中央凹陷大慶長垣二級構(gòu)造帶南部的三級構(gòu)造帶葡萄花構(gòu)造中部,東西兩側(cè)為近南北向、南端為近東西向的封閉性斷層所分隔,整體上構(gòu)造呈近南北向展布,是一個西高東低的斷塊構(gòu)造。葡北油田三斷塊于1979年投入開發(fā),經(jīng)過三十多年的注水開發(fā),目前已進入特高含水開發(fā)階段。但區(qū)塊開發(fā)實踐卻表明,在這種特高含水條件下,受到構(gòu)造、儲層非均質(zhì)性以及井控程度等因素的影響,在斷層附近區(qū)域仍然存在局部剩余油富集區(qū)。因此,本論文提出了大位移定向井挖潛斷層邊部剩余油,從而進一步改善和提高斷層邊部剩余油富集區(qū)的開發(fā)效果。本論文通過開展葡80-63區(qū)塊井震聯(lián)合精細構(gòu)造解釋,精細落實了該區(qū)塊層位及斷層空間展布形態(tài),并以此為基礎(chǔ)建立三維地質(zhì)模型和數(shù)值模型,開展了研究區(qū)地質(zhì)儲量擬合以及全區(qū)和單井生產(chǎn)歷史擬合。同時,對研究區(qū)進行剩余油分布規(guī)律研究,確定斷層邊部剩余油富集規(guī)律。結(jié)合斷層展布規(guī)律、剩余油富集規(guī)律、安全性論證及井軌跡可行性分析優(yōu)化大位移定向井布井參數(shù)。最后運用數(shù)值模擬方法對布井方案進行預(yù)測,預(yù)測結(jié)果顯示該方案顯著地改善了當(dāng)前的生產(chǎn)狀況,提高了對斷層邊部區(qū)域儲量的動用情況,有效地增加了該區(qū)塊的產(chǎn)量,這對于葡北油田三斷塊葡80-63區(qū)塊的開發(fā)和認識有著重要的實際意義,同時也為該油田接下來的開采與增產(chǎn)提供了指導(dǎo),為實際生產(chǎn)中大位移定向井布井方案的優(yōu)選部署提供了依據(jù)。
[Abstract]:The third fault block of Pubei Oilfield is located in the middle part of the third-order structural belt of Daqing Placanticline in the central depression of Songliao Basin. The east-west side of the fault block is near the south-south direction and the south end is separated by the near-east-west-trending sealing fault. As a whole, the structure is distributed in the north-south direction, which is a fault block structure with high west and low east. The third fault block of Pubei Oilfield was put into development in 1979. After more than 30 years of water flooding, it has entered the stage of ultra-high water cut development. However, the development practice of the block shows that under this very high water cut condition, the local residual oil enrichment area still exists in the area near the fault affected by the factors such as structure, reservoir heterogeneity and well control degree. Therefore, this paper proposes to exploit the remaining oil at the edge of the potential fault in the directional well with large displacement, so as to further improve and improve the development effect of the remaining oil enrichment area on the edge of the fault. In this paper, through the interpretation of well-seismic and fine structure in Pu803block, the horizon and fault spatial distribution of this block have been implemented in detail, and the 3D geological model and numerical model have been established on the basis of this. The geological reserves fitting and production history fitting of the whole area and single well in the study area were carried out. At the same time, the distribution of residual oil in the study area is studied to determine the enrichment law of residual oil on the edge of fault. Combined with fault distribution law, remaining oil enrichment law, safety demonstration and well trajectory feasibility analysis, optimization of well layout parameters for directional wells with large displacement is carried out. Finally, the numerical simulation method is used to predict the well placement scheme. The prediction results show that the scheme has significantly improved the current production situation, increased the production of reserves on the fault edge region, and effectively increased the output of the block. This is of great practical significance to the development and understanding of the third fault block in Pubei Oilfield, Portugal 80m 63, and also provides guidance for the next development and increase of production in the oil field. It provides the basis for the optimum arrangement of the well layout scheme for large displacement directional wells in actual production.
【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

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本文編號：2460203