【摘要】：為研究海陸過渡相頁巖的孔隙結(jié)構(gòu)及分形特征,對(duì)采自沁水盆地的12塊樣品進(jìn)行了低溫氮?dú)馕健呙桦婄R、X-射線衍射和有機(jī)質(zhì)含量等系列分析測(cè)試。結(jié)果表明,研究區(qū)頁巖黏土礦物最為富集,石英含量次之,有機(jī)質(zhì)含量平均為2.98%,干酪根類型以Ⅲ型為主。中孔是研究區(qū)頁巖的主體孔隙,對(duì)孔隙體積和比表面積貢獻(xiàn)最大。研究區(qū)頁巖孔隙具有明顯的分形特征,利用FHH模型計(jì)算得到2種分形維數(shù)(D1、D2)。黏土礦物含量與D1、D2具有較好的正相關(guān)性,有機(jī)質(zhì)含量與分形維數(shù)無明顯相關(guān)關(guān)系。D1和D2具有一定的正相關(guān)性,可以共同定量表征頁巖孔隙結(jié)構(gòu)的復(fù)雜程度和孔隙表面的粗糙程度。分形維數(shù)D1、D2越大,頁巖孔隙體積和比表面積越大,越有利于氣體的富集,但是D2越大孔隙結(jié)構(gòu)越趨于復(fù)雜,不利于氣體的滲流。分形維數(shù)D1越大而D2適中的頁巖儲(chǔ)集能力較強(qiáng),且有利于頁巖氣的開發(fā)。
[Abstract]:In order to study the pore structure and fractal characteristics of marine and continental transitional shale, 12 samples from Qinshui basin were analyzed and tested by low temperature nitrogen adsorption, scanning electron microscopy, X-ray diffraction and organic matter content. The results show that shale clay minerals are the most abundant in the study area, followed by quartz content, organic matter content is 2.98%, kerogen type is mainly type 鈪，

本文編號(hào)：2342022