發(fā)布時間：2018-04-14 16:13

  本文選題：沉積微相 + 儲層特征��； 參考：《東北石油大學》2017年碩士論文

【摘要】：杏一~二區(qū)東部中塊位于杏北開發(fā)區(qū)東北部,于1966年投入開發(fā),目前具有采出程度高和綜合含水高的“雙高”特征。由于區(qū)塊進行過一類油層三次采油,整體采出程度較高,水驅(qū)開發(fā)效果日益變差。因此,針對研究區(qū)勘探開發(fā)現(xiàn)狀,對其葡二油層組剩余油分布規(guī)律進行研究,為后續(xù)研究該區(qū)的加密調(diào)整潛力和調(diào)整方式、有效改善該區(qū)水驅(qū)開發(fā)效果等油氣開發(fā)工作提供了地質(zhì)基礎(chǔ)。本文用從研究區(qū)所取得的巖心觀察資料、各項分析測試資料以及其它收集整理的資料為基礎(chǔ),以“旋回對比,分級控制,不同相帶區(qū)別對待”為原則對研究區(qū)葡二油層組各小層開展精細地層劃分對比工作。通過地區(qū)調(diào)研,結(jié)合所得資料和沉積背景,確定了葡二油層組的沉積體系和亞相、微相類型,建立了測井相模式,對各小層各井進行微相識別及預測,進而繪制各小層沉積微相平面展布圖,研究各小層砂體鉆遇率特征。分析儲層物性特征、砂體有效厚度特征,從層內(nèi)、層間和平面三個方面分析儲層的非均質(zhì)性。確定地質(zhì)建模網(wǎng)格精度,建立研究區(qū)構(gòu)造模型、沉積微相模型、儲層屬性等模型,進行模型粗化。進一步進行數(shù)值模擬,完成歷史擬合。在油藏數(shù)值模擬結(jié)果的基礎(chǔ)上,從平面和垂向兩個方面分析剩余油分布規(guī)律。并結(jié)合已研究得出的沉積微相和儲層非均質(zhì)性等地質(zhì)特征,對剩余油分布的控制因素進行分析。研究表明,平面上杏1-丁3-338、杏1-30-P50、杏1-40-P48、杏2-1-434等井附近,垂向上葡II82、葡II11、葡II12等小層是剩余油的主要富集區(qū)域。剩余油分布主要受到儲層非均質(zhì)性、沉積微相、斷層以及砂巖厚度等地質(zhì)因素的影響。
[Abstract]:The middle block in the east of Xingbei Development Zone is located in the northeast of Xingbei Development Zone. It was developed in 1966. At present, it has the characteristics of high extraction degree and high comprehensive water content.As a result of a class of oil reservoir three times oil recovery, the whole recovery degree is higher, the water drive development effect is getting worse day by day.Therefore, in view of the present situation of exploration and development in the study area, the distribution law of remaining oil in the Puer 2 oil formation is studied in order to further study the potentiality and mode of infilling adjustment in this area.It provides geological basis for oil and gas development such as improving the development effect of water flooding in this area.Based on the core observation data obtained from the study area, the analysis and test data and other data collected and collated, this paper is based on "cycle contrast, grading control,"According to the principle of different facies zones, fine stratigraphic classification and correlation are carried out for each sublayer of the Puer 2 formation in the study area.The sedimentary system, subfacies and microfacies types of the Puer 2 formation are determined through regional investigation, combined with the obtained data and sedimentary background. The logging facies model is established, and the microfacies identification and prediction are carried out for the wells in each sublayer.Furthermore, the plane layout of sedimentary microfacies of each layer is plotted, and the characteristics of drilling rate of sand bodies in each layer are studied.The characteristics of reservoir physical property and effective thickness of sand body are analyzed, and the heterogeneity of reservoir is analyzed from three aspects: inner layer, interlayer and plane.The mesh precision of geological modeling is determined, and the models of tectonic model, sedimentary microfacies model and reservoir attribute are established, and the model coarsening is carried out.Further numerical simulation is carried out to complete historical fitting.Based on the results of reservoir numerical simulation, the distribution law of remaining oil is analyzed from two aspects: plane and vertical.Combined with the geological characteristics of sedimentary microfacies and reservoir heterogeneity, the controlling factors of remaining oil distribution were analyzed.The results show that the horizontal layers of Apricot 1-3-338, Apricot 1-30-P50, Apricot 1-40-P48, Apricot 2-1-434 are the main enrichment areas of residual oil.The remaining oil distribution is mainly affected by reservoir heterogeneity, sedimentary microfacies, fault and sandstone thickness.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TE327;P618.13
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本文編號：1750065