本文選題：薩中開發(fā)區(qū)　切入點(diǎn)：高臺(tái)子油層　出處：《東北石油大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：薩中開發(fā)區(qū)經(jīng)過40多年的注水開發(fā),各類油層得到不同程度動(dòng)用。隨著水驅(qū)程度的不斷提高,各類儲(chǔ)集層的物性發(fā)生了明顯變化,對開發(fā)調(diào)整措施的制定將產(chǎn)生一定影響,有必要總結(jié)影響高含水期儲(chǔ)集層物性變化的主要因素,揭示儲(chǔ)集層物性隨注水開發(fā)過程變化的規(guī)律,為三次采油和化學(xué)調(diào)剖等調(diào)整措施方案的制定提供科學(xué)依據(jù)。高臺(tái)子油層開發(fā)面臨著高含水、高采出程度、高遞減的“三高”局面,為了控制產(chǎn)量遞減速度,延長油田開發(fā)有效期,有必要研究一套特高含水期水驅(qū)開發(fā)規(guī)律,以指導(dǎo)油層的后期開發(fā)。通過巖心物性實(shí)驗(yàn)和巖心專項(xiàng)實(shí)驗(yàn),給出薩中開發(fā)區(qū)高臺(tái)子油層和薩葡油層孔隙結(jié)構(gòu)特征、儲(chǔ)層礦物成分、粘土含量等,給出薩葡油層和高臺(tái)子油層不同滲透率巖心的啟動(dòng)壓力梯度、相對滲透率曲線、滲流規(guī)律曲線、水驅(qū)油規(guī)律和毛管壓力曲線,總結(jié)出經(jīng)過長期水驅(qū)之后,薩中開發(fā)區(qū)巖心物性橫向和縱向的變化情況以及高滲透率級(jí)別和低滲透率級(jí)別巖心本質(zhì)差異,結(jié)合相對滲透率曲線特征、得出高臺(tái)子油層在低滲透率級(jí)別中具有一定的開發(fā)潛力。全面認(rèn)識(shí)了高臺(tái)子油層的發(fā)育及沉積特征和開發(fā)狀況,分析井網(wǎng)開發(fā)現(xiàn)狀,對比開發(fā)效果,給出了高含水后期高臺(tái)子油層高臺(tái)子油層注采系統(tǒng)調(diào)整潛力不大,水驅(qū)提高采收率效果不明顯;井網(wǎng)間有一定的補(bǔ)充調(diào)整潛力,后期只能通過全面加密調(diào)整結(jié)合三次采油開發(fā),才能大幅度提高油層采收率。
[Abstract]:After more than 40 years of waterflooding development in Sazhong Development Zone, various types of reservoirs have been used to varying degrees. With the continuous improvement of water drive degree, the physical properties of various reservoirs have changed obviously, which will have a certain impact on the formulation of development and adjustment measures. It is necessary to summarize the main factors that affect the change of reservoir physical properties in high water-cut period, and to reveal the regularity of reservoir physical properties changing with the process of water injection development. It provides a scientific basis for the formulation of adjustment measures such as tertiary oil recovery and chemical profile control. The development of Gaotaizi reservoir is faced with a situation of high water cut, high production degree and high decline. In order to control the rate of decline of production, the development of Gaotaizi oil reservoir is faced with a situation of high water cut, high production degree and high decline. In order to extend the period of validity of oilfield development, it is necessary to study a set of water drive development laws in the period of super high water cut, in order to guide the later development of reservoir. The pore structure characteristics, reservoir mineral composition and clay content of Gaotaizi reservoir and sap reservoir in Sazhong Development Zone are given. The starting pressure gradient and relative permeability curves of the cores with different permeability are given. The percolation law curve, water flooding rule and capillary pressure curve are summarized. After a long period of water flooding, the physical properties of the core in Sazhong Development Zone are changed horizontally and vertically, and the essential differences between the high permeability level core and the low permeability grade core are obtained. Combining with the characteristics of relative permeability curve, it is concluded that Gaotaizi reservoir has certain development potential in low permeability level. The development and sedimentary characteristics and development status of Gaotaizi reservoir are fully understood, and the present situation of well pattern development is analyzed, and the development effect is compared. It is shown that in the late stage of high water cut, the adjustment potential of injection and production system in high water cut reservoir is not large, the effect of water flooding on oil recovery is not obvious, and there is a certain supplementary adjustment potential between wells, and in the latter stage, only comprehensive infill adjustment can be combined with tertiary oil recovery. Only in this way can oil recovery be greatly improved.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE357

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