本文選題：孤東油田八區(qū) + 館上段�。� 參考：《中國石油大學(xué)(華東)》2015年碩士論文

【摘要】：孤東油田是我國東部很具代表性的油田之一,是在1986年投產(chǎn)的整裝油田。本文所研究的對象是館上段主力儲(chǔ)層Ng3-Ng6砂層組。孤東油田八區(qū)館上段3-6砂層組主要為曲流河和辮狀河沉積,砂體橫向變化快,非均質(zhì)性嚴(yán)重。經(jīng)過近30年的開發(fā),綜合含水量高達(dá)95%,地下油水關(guān)系復(fù)雜。隨著勘探開發(fā)的深入,原來的沉積相劃分已無法滿足現(xiàn)階段的要求。因此,為了達(dá)到控制含水量的上升,穩(wěn)定產(chǎn)量,提高采收率的目的,本文選擇以孤東八區(qū)為研究對象,開展沉積相與儲(chǔ)層微觀特征的研究以滿足油田后期開發(fā)的需要。首先,結(jié)合豐富的前人研究資料,以儲(chǔ)層沉積學(xué)的基本原理和方法為指導(dǎo),在測井曲線標(biāo)準(zhǔn)化和二次解釋的基礎(chǔ)上,主要利用測井曲線,輔以巖心觀察和掃描電鏡等分析測試方法,對孤東八區(qū)館上段儲(chǔ)層進(jìn)行了劃分與對比。通過研究,將館上段主力含油的3-6砂層組劃為25個(gè)小層,為沉積微相和儲(chǔ)層微觀特征的研究奠定了基礎(chǔ)。然后,利用巖芯、測井曲線和分析測試等資料,對孤東油田八區(qū)沉積微相進(jìn)行研究,將孤東河流相儲(chǔ)層劃分為四個(gè)亞相:河道、堤岸、河漫和廢棄河道亞相。在此基礎(chǔ)之上,分為7種沉積微相類型:邊灘微相、心灘微相、天然堤微相、河漫灘微相、河漫湖泊微相、決口扇微相、廢棄河道微相。最后,在對孤東八區(qū)館上段3-6砂層組沉積相研究的基礎(chǔ)之上,結(jié)合區(qū)內(nèi)測井和各種分析測試資料,對儲(chǔ)層的微觀特征進(jìn)行了研究,表征了儲(chǔ)層孔隙度和滲透率在縱向和橫向上的變化規(guī)律。通過研究發(fā)現(xiàn),館上段儲(chǔ)層的物性主要受控于沉積微相。在孤東八區(qū)區(qū)內(nèi)沉積相研究和儲(chǔ)層微觀特征研究的基礎(chǔ)之上,綜合利用生產(chǎn)動(dòng)態(tài)資料,進(jìn)行有利區(qū)的預(yù)測。
[Abstract]:Gudong Oilfield is one of the representative oilfields in the east of China, which was put into production in 1986. The object of this paper is the Ng3-Ng6 sand formation, the main reservoir in the upper Guanzhou formation. The 3-6 sand formation of the upper member of Guanshang formation in Gudong Oilfield is mainly composed of meandering and braided rivers. The sand body changes rapidly and its heterogeneity is serious. After nearly 30 years of development, the comprehensive water content is as high as 95%, and the relationship between underground oil and water is complex. With the development of exploration and development, the original sedimentary facies division can not meet the requirements of the present stage. Therefore, in order to control the increase of water content, stabilize production and improve oil recovery, this paper chooses Gudong eight area as the research object, carries out the research of sedimentary facies and reservoir microscopic characteristics to meet the needs of the later development of oil field. First of all, based on abundant previous research data and guided by the basic principles and methods of reservoir sedimentology, logging curves are mainly used on the basis of logging curve standardization and quadratic interpretation. With core observation and scanning electron microscope, the reservoir in the upper section of Guanshang in the eighth district of Gudong is divided and contrasted. Through the research, the 3-6 sandstone formation, which is the main oil-bearing reservoir in the upper part of Guanzhou formation, is divided into 25 sub-layers, which lays a foundation for the study of sedimentary microfacies and reservoir microscopic characteristics. Then, the sedimentary microfacies in the eighth area of Gudong Oilfield are studied by using the data of core, logging curve and analysis and testing. The reservoir of the fluvial facies in Gudong Oilfield is divided into four subfacies: river channel, embankment, river overflowing and abandoned channel subfacies. On this basis, there are seven types of sedimentary microfacies: shoal microfacies, core beach microfacies, natural embankment microfacies, floodplain microfacies, river and lake microfacies, crevasse fan microfacies, abandoned channel microfacies. Finally, on the basis of the study of the sedimentary facies of the 3-6 sand formation in the upper member of Guanshang in the eighth section of Gudong, the microcosmic characteristics of the reservoir are studied in combination with the well logging and various analytical test data in the area. The changes of porosity and permeability in the vertical and lateral direction are characterized. It is found that the physical properties of the upper member reservoir are mainly controlled by sedimentary microfacies. On the basis of the study of sedimentary facies and reservoir microscopic characteristics in the eighth area of Gudong region, the prediction of favorable areas is carried out by synthetically utilizing the production dynamic data.
【學(xué)位授予單位】：中國石油大學(xué)(華東)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.13

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