本文選題：韌性巖屑 + 壓實作用��； 參考：《吉林大學》2015年碩士論文

【摘要】：由于成巖作用提出了相關(guān)研究成巖作用的概念，取得了長足的進步，特別是在石油和天然氣勘探領(lǐng)域。壓實成巖的重要組成部分，對孔隙演化及儲層性質(zhì)有很大的影響。通過廣泛的研究可能會顯示壓實在砂巖孔隙結(jié)構(gòu)和分布有顯著影響，導致大幅減少的孔隙空間。 但是,學者們在多年來對于儲層成巖作用方面的有關(guān)研究,關(guān)于壓實作用對砂巖中韌性巖屑的變形特征及其對孔隙度影響的關(guān)注往往更多偏向于一些簡短、定性的描述和分析,在壓實模擬實驗方面的研究并不是很多。為了進一步探索壓實作用過程中塑性巖屑的變形特征及對孔隙度的影響,我們以渤海盆地為目標區(qū)，以該盆地的地質(zhì)背景為參考，進行了相關(guān)的模擬實驗。 中國的渤海灣盆地東部陸相斷陷盆地，全流域探明超過733×108桶原油儲量，，是中國最大的石油發(fā)現(xiàn)盆地，至今已有近半個世紀的探索史，勘探潛力非常大。 通過研究區(qū)資料可以確定盆地儲層巖石類型主要為長石巖屑砂巖，巖屑長石砂巖和巖屑砂巖的一小部分，與基礎(chǔ)，中粒和粗細粒度，其次是排序等上。在背景作為基準的相關(guān)實驗為條件下，設(shè)計和實施相對比較完善的實驗。實驗樣品選用含有一定數(shù)量的韌性巖屑的河沙，含量比例及粒度均參考渤海盆地儲層的相關(guān)參數(shù)，利用“三軸巖石變形實驗系統(tǒng)”，完成了相關(guān)實驗。設(shè)計指標為：模擬深度0-4000m，間隔深度500m，壓力范圍0-120Mpa，間隔為1.5MPa，實驗結(jié)果顯示：隨埋深加大，孔隙率隨之變小，二者呈負相關(guān)關(guān)系；壓縮量的實現(xiàn)主要由孔隙率的縮小和碎屑變形來完成；韌性巖屑的變形以韌性變形為主；晶屑的變形主要表現(xiàn)為脆性破裂，導致碎屑的粒徑變小。該研究對于油氣勘探和開發(fā)具有一定的參考價值。
[Abstract]:Due to diagenesis, the concept of diagenesis has been put forward and great progress has been made, especially in the field of oil and gas exploration. The important part of compaction diagenesis has great influence on pore evolution and reservoir properties. Extensive studies may show that compaction has a significant effect on the pore structure and distribution of sandstone resulting in a significant reduction in pore space. However, over the years, scholars have studied the diagenesis of reservoir, and the attention of compaction on the deformation characteristics of ductile cuttings in sandstone and its influence on porosity tends to be more inclined to brief, qualitative description and analysis. There is not much research on compaction simulation experiment. In order to further explore the deformation characteristics of plastic cuttings and their influence on porosity during compaction, we take the Bohai Basin as the target area and the geological background of the basin as a reference, and carry out relevant simulation experiments. The continental faulted basin in the eastern Bohai Bay basin in China, with over 733 脳 108 barrels of crude oil reserves, is the largest oil discovery basin in China. It has been explored for nearly half a century and has great exploration potential. The reservoir rock types in the basin are mainly feldspathic sandstone, lithic feldspathic sandstone and lithic sandstone. Under the condition of background related experiments, relatively perfect experiments are designed and implemented. The experimental samples are selected to contain a certain amount of ductile debris, the content ratio and particle size of the reservoir are referenced to the relevant parameters of the reservoir in the Bohai Basin, and the relevant experiments are completed by using the "triaxial rock deformation experimental system". The design indexes are as follows: the simulated depth is 0-4000m, the interval depth is 500m, the pressure range is 0-120Mpaand the interval is 1.5MPa. The experimental results show that the porosity decreases with the increase of the buried depth, and there is a negative correlation between them. The deformation of ductile rock debris is mainly ductile deformation, and the deformation of grain debris is mainly characterized by brittle fracture, which results in the grain size becoming smaller. This study has certain reference value for oil and gas exploration and development.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P618.13

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