本文選題：地震沉積學(xué) + 砂巖成巖作用��； 參考：《東北石油大學(xué)》2015年碩士論文

【摘要】：本文以現(xiàn)代層序地層學(xué)、沉積巖石學(xué)、石油地質(zhì)學(xué)為理論基礎(chǔ);以疊后三維地震數(shù)據(jù)體的相位旋轉(zhuǎn)體、錄井巖心資料和其他各種室內(nèi)實驗數(shù)據(jù)等為數(shù)據(jù)基礎(chǔ);以地震沉積學(xué)技術(shù)為主要研究技術(shù);以測井數(shù)據(jù)為驗證手段;以地層層序、沉積微相和成巖作用為研究內(nèi)容對松遼盆地齊家地區(qū)古龍凹陷青山口組青二、三段(高三、高四組)的巖石物理特征、沉積模式及部分成巖作用進行分析,并利用地震沉積學(xué)技術(shù)建立室內(nèi)實驗數(shù)據(jù)和地震巖性體的直觀規(guī)律,最終得到劃分地震膠結(jié)相成巖相圖的地震判別依據(jù)。方法是:首先在有井的區(qū)域建立井-震對比,驗證與研究圖像與井數(shù)據(jù)的對應(yīng)關(guān)系,然后利用沉積相帶的劃分,在該巖性數(shù)據(jù)體中,使自然伽馬和自然電位在誤差允許的范圍內(nèi)去符合井旁的地震響應(yīng),最后結(jié)合沉積巖石學(xué)和儲層沉積學(xué)理論對這個“符合”做出限制,找到符合的范圍,為預(yù)測提供更多的依據(jù)。這使地震沉積學(xué)切片在研究區(qū)鉆井較少或者空白區(qū)處可以在分辨率允許的范圍內(nèi)預(yù)測膠結(jié)作用的分布,再結(jié)合油水分布規(guī)律找到膠結(jié)作用與油層發(fā)育的規(guī)律,根據(jù)這個規(guī)律預(yù)測研究區(qū)內(nèi)空白區(qū)的有利布井區(qū)。本文的研究區(qū)屬于三角洲-湖相的沉積環(huán)境,研究層位處于一個構(gòu)造穩(wěn)定、水體較淺的時期,儲層具有構(gòu)造平緩、沉積厚度穩(wěn)定、成層性好的特點,砂巖雖然多以薄層砂和砂質(zhì)條帶形式分布,但是砂泥巖的地震反射能量差異很明顯,儲層沉積模式也較為清楚,橫向相變快,這些儲層特點都為本文的地震預(yù)測提供了良好的環(huán)境。理論上,某一種成巖作用對單元儲集體的巖性聲學(xué)特征有著顯著的影響,這也就標志著在地震信號中將這種影響解釋出來是具有可行性的。本次研究的核心技術(shù)是地層切片,地層切片結(jié)合沉積速率的平面差異性,改善了傳統(tǒng)切片穿時性的部分缺點,使每一張切片可以達到最大程度的等時。在地球物理學(xué)中指出,地震數(shù)據(jù)體的振幅屬性和波阻抗具有相關(guān)性,利用地層切片的制作原理,將圖像所體現(xiàn)的振幅屬性反映地質(zhì)平面波阻抗的分布,然后根據(jù)膠結(jié)作用相關(guān)參數(shù)與井數(shù)據(jù)進行線性擬合,建立相關(guān)性,之后根據(jù)這個相關(guān)性在地震沉積相圖上進行地震膠結(jié)相成巖相的預(yù)測、劃分,結(jié)合膠結(jié)作用參數(shù)與波阻值的線性曲線,得出膠結(jié)作用的分區(qū)性,然后通過井上測井-巖心-切片驗證、井間連井-地震地層學(xué)-實驗室數(shù)據(jù)預(yù)測的方式對研究區(qū)沉積微相和膠結(jié)相進行研究。
[Abstract]:This paper is based on modern sequence stratigraphy, sedimentary petrology, petroleum geology, phase rotation body of poststack 3D seismic data body, core data of mud logging and other laboratory experimental data. Taking seismic sedimentology as the main research technique, well logging data as the verification means, stratigraphic sequence, sedimentary microfacies and diagenesis as the research contents, Qingshankou formation of Qilong depression in Songliao Basin is studied in the second and third member of Qingshankou formation. The petrophysical characteristics, sedimentary models and partial diagenesis of the high four groups are analyzed, and the laboratory experimental data and the direct rules of seismic lithology are established by using seismic sedimentology. Finally, the seismic discriminant basis for the division of seismic cementation and lithofacies diagram is obtained. The methods are as follows: first, the well-seismic correlation is established in the well area, the correspondence between the image and the well data is verified and studied, and then the sedimentary facies zone is divided into the lithologic data body. To make natural gamma and natural potential conform to the seismic response near the well within the range of errors permitted. Finally, combining the theory of sedimentary petrology and reservoir sedimentology, the "coincidence" is restricted and the scope of coincidence is found. Provide more basis for prediction. This makes it possible for seismic sedimentology slices to predict the distribution of cementation within the range of resolution allowed in the study area where there are few wells or blank areas, and then to find out the regularity of cementation and reservoir development in combination with the distribution of oil and water. According to this rule, the favorable well layout area of the blank area in the study area is predicted. The study area in this paper belongs to the depositional environment of deltaic and lacustrine facies. The study horizon is in a period of structural stability and shallow water body. The reservoir has the characteristics of flat structure, stable sedimentary thickness and good stratification. Although sandstone is distributed in the form of thin layer sand and sandy belt, the difference of seismic reflection energy of sand and mudstone is obvious, the sedimentary model of reservoir is also clear, and the lateral phase transition is fast. These reservoir characteristics provide a good environment for earthquake prediction in this paper. Theoretically, a certain diagenesis has a significant influence on the lithologic acoustics of the unit reservoir, which indicates that it is feasible to interpret this effect in seismic signals. The core technology of this study is stratigraphic slicing, which combines the plane difference of deposition rate, and improves some shortcomings of traditional slicing, so that each slice can reach the maximum isochronous level. In geophysics, it is pointed out that the amplitude attribute of seismic data volume is correlated with wave impedance. Based on the principle of making stratigraphic slice, the amplitude attribute reflected in the image reflects the distribution of geological plane wave impedance. Then the correlation is established according to the linear fitting of cementation parameters and well data, and then the prediction and division of seismic cementation facies are carried out on the seismic sedimentary facies diagram. Combined with the linear curve of cementation parameters and wave resistance, the zoning of cementation is obtained. Sedimentary microfacies and cemented facies in the study area were studied by means of cross-well, seismostratigraphic and laboratory data prediction.
【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】：2015
【分類號】：P618.13;P631.4

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相關(guān)期刊論文 前1條

1 梁積偉;李文厚;;鄂爾多斯盆地東北部山西組高分辨層序地層學(xué)研究[J];沉積學(xué)報;2006年02期

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本文編號：1935333