本文選題：頁巖 + 納米級孔隙��； 參考：《中國石油大學(xué)學(xué)報(自然科學(xué)版)》2017年01期

【摘要】：以中、上揚(yáng)子地區(qū)下古生界海相和中生界陸相頁巖為研究對象,運(yùn)用氬離子拋光-場發(fā)射掃描電子顯微鏡技術(shù)和氮?dú)馕綄?shí)驗(yàn)測試技術(shù)對頁巖儲層的納米級孔隙發(fā)育特征及熱成熟演化進(jìn)行探討。結(jié)果表明:頁巖主要發(fā)育了有機(jī)質(zhì)孔、粒間孔、粒內(nèi)孔和微裂縫等4種孔隙類型;TOC和Ro是控制頁巖納米級孔隙發(fā)育的主要因素;對于高演化頁巖,不同干酪根類型的有機(jī)質(zhì)孔隙發(fā)育程度的大小次序?yàn)棰裥廷蛐廷笮?石英和黏土礦物通過控制TOC的變化對納米級孔隙發(fā)育和分布產(chǎn)生間接影響;頁巖熱成熟度演化影響頁巖孔徑分布和微孔、中孔和大孔相對含量的變化,在高—過成熟階段,與有機(jī)質(zhì)有關(guān)的微孔、中孔呈不斷增加的趨勢,在極高成熟度階段,頁巖大孔轉(zhuǎn)變?yōu)橹锌缀臀⒖?有機(jī)質(zhì)孔隙變小,納米級孔隙體積呈現(xiàn)出先增加后減小的趨勢;頁巖中干酪根、可溶瀝青熱裂解生氣作用和甲烷化作用可能是頁巖有機(jī)質(zhì)納米級孔隙形成的主要原因。
[Abstract]:The lower Paleozoic marine facies and Mesozoic continental shale in the Middle and Upper Yangtze region were taken as the objects of study. The characteristics of pore development and thermal maturation of shale reservoirs were studied by argon ion polishing field emission scanning electron microscopy and nitrogen adsorption test. The results show that the organic pore, intergranular pore, intragranular pore and microfracture are the main factors controlling the development of shale nanoscale pores, while for highly evolved shale, TOC and Ro are the main factors controlling the development of shale nanoscale pores. The order of pore development of different kerogen types is type 鈪，

本文編號：1927068