本文選題：韌性巖屑 + 壓實(shí)作用��； 參考：《吉林大學(xué)》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(jìn)步，特別是在石油和天然氣勘探領(lǐng)域。壓實(shí)成巖的重要組成部分，對(duì)孔隙演化及儲(chǔ)層性質(zhì)有很大的影響。通過廣泛的研究可能會(huì)顯示壓實(shí)在砂巖孔隙結(jié)構(gòu)和分布有顯著影響，導(dǎo)致大幅減少的孔隙空間。 但是,學(xué)者們?cè)诙嗄陙韺?duì)于儲(chǔ)層成巖作用方面的有關(guān)研究,關(guān)于壓實(shí)作用對(duì)砂巖中韌性巖屑的變形特征及其對(duì)孔隙度影響的關(guān)注往往更多偏向于一些簡(jiǎn)短、定性的描述和分析,在壓實(shí)模擬實(shí)驗(yàn)方面的研究并不是很多。為了進(jìn)一步探索壓實(shí)作用過程中塑性巖屑的變形特征及對(duì)孔隙度的影響,我們以渤海盆地為目標(biāo)區(qū)，以該盆地的地質(zhì)背景為參考，進(jìn)行了相關(guān)的模擬實(shí)驗(yàn)。 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(chǔ)量，，是中國最大的石油發(fā)現(xiàn)盆地，至今已有近半個(gè)世紀(jì)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(chǔ)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(xì)粒度，其次是排序等上。在背景作為基準(zhǔn)的相關(guān)實(shí)驗(yàn)為條件下，設(shè)計(jì)和實(shí)施相對(duì)比較完善的實(shí)驗(yàn)。實(shí)驗(yàn)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(chǔ)層的相關(guān)參數(shù)，利用“三軸巖石變形實(shí)驗(yàn)系統(tǒng)”，完成了相關(guān)實(shí)驗(yàn)。設(shè)計(jì)指標(biāo)為：模擬深度0-4000m，間隔深度500m，壓力范圍0-120Mpa，間隔為1.5MPa，實(shí)驗(yàn)結(jié)果顯示：隨埋深加大，孔隙率隨之變小，二者呈負(fù)相關(guān)關(guān)系；壓縮量的實(shí)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(dǎo)致碎屑的粒徑變小。該研究對(duì)于油氣勘探和開發(fā)具有一定的參考價(jià)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(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.13

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