A sample from the Jurassic Tamulangou Fm.and two comparison samples from the Cretaceous Fm.were used to document the hydrocarbon generation kinetics and phase behaviors at two heating rates using the confined gold tub...A sample from the Jurassic Tamulangou Fm.and two comparison samples from the Cretaceous Fm.were used to document the hydrocarbon generation kinetics and phase behaviors at two heating rates using the confined gold tube system.The results show that the different heating rates affect the reaction rates,paths and levels of organic matter evolution.The average activation energy and dominant frequency activation energy of liquid hydrocarbon are significantly lower than those of gaseous.Moreover,igneous intrusion had a positive effect on the blooming,enrichment and preservation of organic matter,promoting a Ro increase of 0.09%–1.07%in the Jurassic Tamulangou Fm.Two models were used to simulate the normal and abnormal evolution caused by thermal events combined hydrocarbon generation kinetic parameters.Thermal simulation analysis shows that oil generation was initially slow and then increased rapidly until a burial depth of 1500 m was reached at~128 Ma.The largest hydrocarbon expulsion began at~120 Ma,corresponding to a burial depth of 2450 m.The maximum cumulative yield is 510 mg/g TOC,and it is still in the peak period of hydrocarbon generation,which demonstrates a favorable potential for hydrocarbon exploration.展开更多
分别于2020和2021年夏季(7-8月)对福建省东张水库的进口、库心和出口3个断面进行水样采集.结果显示,东张水库的浮游植物主要由蓝藻、绿藻和硅藻组成,其中蓝藻门为优势类群.东张水库2020年夏季浮游植物的密度在1.26×10^(7)~4.75...分别于2020和2021年夏季(7-8月)对福建省东张水库的进口、库心和出口3个断面进行水样采集.结果显示,东张水库的浮游植物主要由蓝藻、绿藻和硅藻组成,其中蓝藻门为优势类群.东张水库2020年夏季浮游植物的密度在1.26×10^(7)~4.75×10^(7)L^(-1),共检出浮游植物6门28属;2021年夏季浮游植物的密度在2.06×10^(7)~5.45×10^(7)L,共检出浮游植物5门19属.用浮游植物群落特征指数对东张水库进行了综合评价,东张水库整体处于中度污染状态.浮游植物密度受多种环境因子的影响.Spearman相关性分析显示:浮游植物总密度与总磷浓度呈极显著正相关(P<0.01),与总氮浓度呈显著正相关(P<0.05).应用浮游植物完整性指数(phytoplanktonic index of biotic integrity,P-IBI)评价东张水库健康状况,结果显示,2020年夏季东张水库的健康状况为一般;2021年夏季东张水库的健康状况为较差.展开更多
基金sponsored by the Subordinate subject of the National Major Science and Technology Project“Development of Large Oil and Gas Fields and coalbed methane”(2017ZX05001-003)supported by the National Natural Science Foundation of China”Simulation of Dynamic Process for Shale Oil Sweet Deposition in Lucaogou Formation,Jimusar Sag”(42072119).
基金supported by the National Natural Science Foundation of China(Grant No.42072119)Science and Technology Project of Petro China(Grant No.101017kt1604003x20)。
文摘A sample from the Jurassic Tamulangou Fm.and two comparison samples from the Cretaceous Fm.were used to document the hydrocarbon generation kinetics and phase behaviors at two heating rates using the confined gold tube system.The results show that the different heating rates affect the reaction rates,paths and levels of organic matter evolution.The average activation energy and dominant frequency activation energy of liquid hydrocarbon are significantly lower than those of gaseous.Moreover,igneous intrusion had a positive effect on the blooming,enrichment and preservation of organic matter,promoting a Ro increase of 0.09%–1.07%in the Jurassic Tamulangou Fm.Two models were used to simulate the normal and abnormal evolution caused by thermal events combined hydrocarbon generation kinetic parameters.Thermal simulation analysis shows that oil generation was initially slow and then increased rapidly until a burial depth of 1500 m was reached at~128 Ma.The largest hydrocarbon expulsion began at~120 Ma,corresponding to a burial depth of 2450 m.The maximum cumulative yield is 510 mg/g TOC,and it is still in the peak period of hydrocarbon generation,which demonstrates a favorable potential for hydrocarbon exploration.
文摘分别于2020和2021年夏季(7-8月)对福建省东张水库的进口、库心和出口3个断面进行水样采集.结果显示,东张水库的浮游植物主要由蓝藻、绿藻和硅藻组成,其中蓝藻门为优势类群.东张水库2020年夏季浮游植物的密度在1.26×10^(7)~4.75×10^(7)L^(-1),共检出浮游植物6门28属;2021年夏季浮游植物的密度在2.06×10^(7)~5.45×10^(7)L,共检出浮游植物5门19属.用浮游植物群落特征指数对东张水库进行了综合评价,东张水库整体处于中度污染状态.浮游植物密度受多种环境因子的影响.Spearman相关性分析显示:浮游植物总密度与总磷浓度呈极显著正相关(P<0.01),与总氮浓度呈显著正相关(P<0.05).应用浮游植物完整性指数(phytoplanktonic index of biotic integrity,P-IBI)评价东张水库健康状况,结果显示,2020年夏季东张水库的健康状况为一般;2021年夏季东张水库的健康状况为较差.
