中浅层页岩干酪根化学组成与结构特性  

Chemical Composition and Structure Characteristics of Kerogen in Middle Shale

作　　者：刘攀 肖湑桥 胡浩然 常程 王建君[2] 赵玉君 LIU Pan;XIAO Xu-qiao;HU Hao-ran;CHANG Cheng;WANG Jian-jun;ZHAO Yu-jun(College of Chemistry and Chemical Engineering,Southwest Petroleum University,Sichuan Chengdu 610000;PetroChina Southwest Oil and Gas Field Company,Sichuan Chengdu 610000;Changqing Engineering Design Co.,Ltd.,Shaanxi Xi'an 710000,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610000 [2]中国石油西南油气田公司,四川成都610000 [3]长庆工程设计有限公司,陕西西安710000

出　　处：《广州化工》2024年第17期60-63,共4页GuangZhou Chemical Industry

基　　金：中国石油-西南石油大学创新联合体科技合作项目(2020CX020200);南充市校科技战略合作项目(SXHZ036、SXHZ017)。

摘　　要：中浅层页岩气有20%~85%是吸附气,其主要存在于干酪根中,明晰干酪根的化学结构特性,可为描述页岩气吸附行为,提高页岩气高效开发提供理论依据。本文对中浅层页岩干酪根的化学结构进行表征分析。结果表明:该地区干酪根贫氢富碳,脂肪碳少而芳香碳多;N、S等原子主要以吡咯、噻吩、砜等形式存在。确定了干酪根的分子式为C_(244)H_(108)N_(4)O_(32)S_(5),并模拟构建了干酪根的平均分子结构模型。20%~85%of the shale gas in the middle and shallow layers is adsorbed gas,which mainly exists in kerogen.The chemical structure of kerogen should be clarified,which can accurately describe the adsorption behaviors of shale gas in the middle and shallow layers to improve the recovery efficiency of shale gas.The chemical structure of kerogen in the middle shale was characterized and analyzed.The results showed that the kerogen in this area was poor in hydrogen and rich in carbon,less aliphatic carbon,and more aromatic carbon.The content of aromatic carbon in the form of pyrrole,thiophene and sulfone was high.Based on the experimental results and analysis,the molecular formula of kerogen was determined to be C_(244)H_(108)N_(4)O_(32)S_(5).The average molecular structure of kerogen was constructed by molecular simulation.

关 键 词：中浅层页岩 干酪根 化学组成 结构特点 平均分子结构模型 

分 类 号：P618.13[天文地球—矿床学]