【摘要】：本文是中國石油重大科技專項“玉門油田重上百萬噸”項目中部分內(nèi)容。玉門老君廟油田地處酒西盆地老君廟背斜帶的中部,是我國最早運用現(xiàn)代技術(shù)開發(fā)的油田。油田自1939年投入開發(fā)以來,走過了七十多年的開發(fā)歷程,老一輩石油人為我們留下了許多寶貴的資料與經(jīng)驗。但是隨著開發(fā)年限的增加,地下情況變得復(fù)雜,油藏整體開采難度加大,為下一步能更好保持老油田持續(xù)有效的穩(wěn)產(chǎn),論文以老君廟油田L(fēng)油藏作為研究靶向,綜合地質(zhì)、巖心、測井、分析化驗、開發(fā)動態(tài)等資料,以高分辨率層序地層學(xué)、沉積學(xué)、測井地質(zhì)學(xué)、儲層地質(zhì)學(xué)、開發(fā)地質(zhì)學(xué)等理論為指導(dǎo),以地質(zhì)統(tǒng)計學(xué)為方法,以計算機(jī)為手段,結(jié)合油田新井實際資料情況,開展了層組精細(xì)劃分對比、儲層沉積微相、儲層四性關(guān)系、儲層特征及儲層分類評價研究,深化了對油藏地質(zhì)特征的再認(rèn)識,為油藏進(jìn)一步水驅(qū)調(diào)整和下一步三次采油延長油田生命力,奠定堅實的地質(zhì)基礎(chǔ)。針對老君廟L油藏層狀砂巖油藏的特點,以標(biāo)志層的識別為手段,按照“井震結(jié)合、旋回控制、分級對比”的原則,相控輔助對比,完善了老君廟L油藏地層劃分與對比。將L油層組劃分為L1、L2、L3、L4、L5,5個砂層,15個小層,建立了研究區(qū)等時地層格架。糾正了前人對比不統(tǒng)一造成的竄層問題,重新認(rèn)識確定了L4+5地層在全區(qū)發(fā)育,砂體在油藏西部發(fā)育,在油藏東部尖滅。在地層格架建立的基礎(chǔ)上,通過區(qū)域構(gòu)造運動及沉積背景研究,確定了老君廟L油藏儲層物源來自于南東方向。沉積體系區(qū)域上由南東至北西分布的特征。借助取心井相標(biāo)志識別、建立標(biāo)準(zhǔn)測井相,確定L油藏為辮狀河～河三角洲沉積體系,發(fā)育辮狀河、三角洲平原、三角洲前緣亞相。其中L3、L4、L5發(fā)育辮狀河沉積,L2為三角洲平原沉積,L1為三角洲前緣沉積。通過沉積相以及沉積微相類型研究,建立了L油藏的沉積相模式,展示了老君廟L油藏沉積體系的時空演化特征。結(jié)合儲層巖石學(xué)特征,開展儲層四性關(guān)系研究,認(rèn)為L油藏儲層巖性對儲層性質(zhì)影響較大,孔滲相關(guān)性較好,泥質(zhì)含量不高,但對儲層的物性有影響。在此基礎(chǔ)上,建立儲層參數(shù)解釋模型,實現(xiàn)從取心井的認(rèn)識到非取心井到油藏的整體認(rèn)識。儲層特征研究表明,研究區(qū)內(nèi)儲層巖石類型相對單一,主要為石英砂巖,膠結(jié)物主要為鈣質(zhì)和泥質(zhì),類型復(fù)雜多樣,其中以蒙脫石、伊利石、方解石最為重要。L油層儲集空間以粒間孔為主,屬于中高孔隙中滲高飽和油藏,三個主力砂層組中L3儲層物性最好,L1物性最差,巖性細(xì),泥質(zhì)含量高,滲透率低。選用物性和孔隙結(jié)構(gòu)為核心的綜合分類方案,建立儲層分類標(biāo)準(zhǔn),將L油藏儲層劃分為三類。結(jié)合新取心井及開辟試驗區(qū)新鉆井動態(tài)反應(yīng),分析三類儲層的動用情況,明確了Ⅱ類的一部分及Ⅲ類將是下一步重點挖潛的目標(biāo)儲層。
[Abstract]:This paper is part of the project of Yumen Oil Field which weighs millions of tons. Located in the middle of Laojunmiao anticline in Jiuxi Basin, Yumen Laojunmiao Oilfield is the first oilfield developed by modern technology in China. The oil field has been developed for more than 70 years since it was put into development in 1939. The older generation of petroleum people have left us a lot of valuable information and experience. However, with the increase of the development years, the underground situation becomes more complicated and the whole reservoir production becomes more difficult. In order to better maintain the stable and sustainable production of the old oil field, the paper takes the L reservoir of Laojunmiao Oilfield as the research target and synthesizes the geology. The data of core, logging, analysis, testing and development are guided by the theories of high-resolution sequence stratigraphy, sedimentology, logging geology, reservoir geology, development geology, etc. Combined with the actual data of new well in oil field, the fine division and correlation of formation, sedimentary microfacies of reservoir, relationship of reservoir four properties, reservoir characteristics and reservoir classification and evaluation are carried out, which deepens the understanding of reservoir geological characteristics. It lays a solid geological foundation for the further adjustment of water flooding and the extension of the vitality of the oil field in the next step. In view of the characteristics of stratified sandstone reservoir in Laojunmiao L reservoir, the stratigraphic division and correlation of Laojunmiao L reservoir are perfected by means of identification of mark layer, according to the principle of "combination of well and earthquake, cycle control and grading contrast". The L oil formation is divided into L _ (1) T _ (2) L _ (2) L _ (2) L _ (3) and L _ (4) L _ (5), 5 sand layers and 15 small layers. An isochronous stratigraphic framework has been established in the study area. This paper corrects the problem of channeling formation caused by the disunity of previous correlation, and determines that L45 formation is developed in the whole area, sand body is developed in the west of reservoir, and pinnacle is destroyed in the eastern part of reservoir. On the basis of the establishment of stratigraphic framework, through the study of regional tectonic movement and sedimentary background, the source of reservoir material in Laojunmiao L reservoir is determined from the southeastern direction. The distribution of sedimentary system from south to east to north and west. With the help of coring well facies identification and standard logging facies, L reservoir is determined as braided river delta sedimentary system, braided river, delta plain and delta front subfacies. Among them, L _ 3, L _ 4, L _ (4) and L _ (5) developed braided river sediments and L _ (2) were delta plain sediments and L _ 1 was delta front deposits. Based on the study of sedimentary facies and sedimentary microfacies, the sedimentary facies model of L reservoir is established, and the space-time evolution characteristics of sedimentary system in Laojunmiao L reservoir are demonstrated. Combined with the petrological characteristics of the reservoir, the relationship between the four properties of the reservoir is studied. It is considered that the lithology of the L reservoir has a great influence on the reservoir properties, the correlation of porosity and permeability is better, the content of mud is not high, but it has an effect on the physical properties of the reservoir. On this basis, a reservoir parameter interpretation model is established to realize the whole understanding from coring well to non-coring well. The study of reservoir characteristics shows that the reservoir rock types in the study area are relatively single, mainly quartz sandstone, and the cementation is mainly calcareous and argillaceous, the types of which are complex and diverse, including montmorillonite, Illite, The reservoir space of calcite reservoir is dominated by intergranular pore, which belongs to medium-high porosity and high permeability reservoir. Among the three main sand formations, the physical property of L3 reservoir is the best and that of L _ 1 reservoir is the worst, the lithology is fine, the muddy content is high, and the permeability is low. Based on the comprehensive classification scheme of physical property and pore structure, the reservoir classification standard is established, and the L reservoir is divided into three categories. Combined with the new coring wells and the new drilling performance reaction in the test area, the production of three types of reservoirs is analyzed, and it is clear that part II and type III will be the target reservoirs for the next step.
【學(xué)位授予單位】：長江大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13

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