摘要:
页岩气作为分布比较广泛、产量相对稳定及清洁的能源,是石油资源的接替型能源.该文以焦石坝地区龙马溪组页岩地层为研究对象,采用地质沉积学、统计学等理论知识和方法,通过随机建模对研究区域的层段展开分析.结果表明:龙马溪组下部页岩地层主要包含石英、粘土、黄铁矿和碳酸盐4类,7种岩性页岩的密度和纵横波速度会由于TOC(总有机碳百分比)增加有所减小.当TOC自1％增加至2％时,这些参数均会从减小向较小幅度的增大,随之再转向减小的趋势发展.此外,7种岩性页岩地层的密度、纵波、横波速度都会随着孔隙度的增大呈现出单调减小的趋势.
Abstract:
Shale gas as a relatively wide distribution,relatively stable production,clean energy,is also the replacement energy of oil resources.Based on the focal region of rockfill creek,the dragon group shale formations as the research object,using geological theory and methods of sedimentology,statistics,by analyzing the interval of the stochastic modeling of the study area.The results show that the lower shale formations in dragon formation consist of four types:Shi ying,clay,pyrite and carbonate,and the density and vertical and horizontal velocity of seven lithologic shale will decrease due to the increase of TOC.When the TOC is increased from 1％ to 2 ％,these parameters will be reduced to a smaller extent and then to a smaller trend.In addition,seven shale formation lithology density,longitudinal wave,shear wave velocity will present monotone decreasing trend with the increase of porosity.
下载: