本文關(guān)鍵詞： 構(gòu)造 地層特征 沉積微相 砂體 水淹 儲量　出處：《東北石油大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：在大量消化前人文獻(xiàn)和資料的基礎(chǔ)上,查明了研究區(qū)構(gòu)造的總體特征;結(jié)合三維地震資料,對研究區(qū)斷裂系統(tǒng)的組合及斷裂要素進(jìn)行了統(tǒng)計,共整理出45條斷層的性質(zhì)和特征。利用井位分層數(shù)據(jù)完成了三間房組(J2s)頂部和J2s31頂部構(gòu)造圖,識別出了26個圈閉,并對圈閉要素進(jìn)行了統(tǒng)計。對研究區(qū)中侏羅統(tǒng)三間房組地層特征進(jìn)行了精細(xì)對比,識別出2個油組、5個砂組、16個小層及25個單層,編制了29條聯(lián)井對比剖面,編制了地層分層數(shù)據(jù)體;并在此基礎(chǔ)上建立了砂層分層數(shù)據(jù)體;編制了地層等厚圖及單層砂體厚度等值線圖,分析了地層和砂體的展布特征和規(guī)律。對沉積微相類型與特征進(jìn)行了研究,研究區(qū)主要發(fā)育辮狀河三角洲相和少量的湖泊相,辮狀河三角洲相主要發(fā)育平原和前緣亞相、湖泊相發(fā)育濱淺湖亞相。研究區(qū)識別微相類型11種,對其特征進(jìn)行了系統(tǒng)論述。并建立了沉積微相數(shù)據(jù)體。對研究區(qū)油水關(guān)系進(jìn)行了深入研究,通過29條油藏聯(lián)井對比剖面圖的剖析,發(fā)現(xiàn)丘陵-鄯善交界區(qū)三間房組油水分布主要受到構(gòu)造的控制,構(gòu)造的高部位是油氣主要的聚集場所,只是后期的斷層破壞使得該區(qū)的油水關(guān)系變得十分復(fù)雜。在構(gòu)造分析、沉積相的展布和油水關(guān)系研究的基礎(chǔ)上,充分利用工區(qū)內(nèi)試油、取心、生產(chǎn)等資料,制定了符合本研究區(qū)的孔滲模型和油水判別標(biāo)準(zhǔn),通過對區(qū)內(nèi)110口井的測井二次解釋,共確定了19井層擬上返井,再從構(gòu)造、沉積相、油水關(guān)系和鄰井對比等幾方面論證,最終確定出4井層作為優(yōu)先上返井層,12井層次優(yōu)油層和3井層油水同層作為接替上返井層。
[Abstract]:On the basis of digesting the previous literatures and data, the general characteristics of the structure in the study area are found out, and the combination and the fault elements of the fault system in the study area are analyzed in combination with the three-dimensional seismic data. The properties and characteristics of 45 faults have been sorted out. Using the stratified data of well location, the top structure map of J2s and J2s31 has been completed, and 26 traps have been identified. The stratigraphic characteristics of the Sanjianfang formation of the Middle Jurassic in the study area have been carefully correlated. Two oil groups, five sand formations, 16 sub-layers and 25 single layers have been identified, and 29 correlation sections have been compiled. The stratigraphic stratification data body is compiled, and the stratigraphic stratification data body is established on the basis of which, and the formation isopacity map and the single layer sand body thickness isoline map are compiled. The types and characteristics of sedimentary microfacies are studied. The braided river delta facies and a few lacustrine facies are mainly developed in the study area, while the braided river delta facies mainly develop plain and front subfacies. The lacustrine facies is developed into littoral subfacies. Eleven types of microfacies are identified in the study area, and their characteristics are systematically discussed. The sedimentary microfacies data body is established. The relationship between oil and water in the study area is deeply studied. Based on the analysis of 29 reservoir correlation profiles, it is found that the distribution of oil and water in Sanjianfang formation is mainly controlled by the structure, and the high part of the structure is the main accumulation place of oil and gas. It is only because of late fault failure that the oil-water relationship in this area becomes very complicated. On the basis of structural analysis, distribution of sedimentary facies and study of oil-water relationship, the data of oil testing, coring and production in the working area are fully utilized. In accordance with the pore and permeability model of the study area and the criteria for distinguishing oil and water, through the second interpretation of the logging of 110 wells in the area, 19 wells are determined to return to the well, and then proved from the aspects of structure, sedimentary facies, oil-water relationship and the correlation of adjacent wells, etc. Finally, 4 well layer is selected as the preferred back well layer, and 3 well oil and water layer is selected as the replacement of the upper return well layer.
【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】：P618.13
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本文編號：1511031