埃及阿布吉拉迪盆地白垩系碎屑岩储层发育,具备良好的油气勘探开发前景。以Alam El Shawish West区块(简称为AESW区块)上白垩统Abu Roash组G段(简称为AR-G段)为例,在岩心、铸体薄片、扫描电镜、X射线衍射、压汞实验、物性分析、地化分...埃及阿布吉拉迪盆地白垩系碎屑岩储层发育,具备良好的油气勘探开发前景。以Alam El Shawish West区块(简称为AESW区块)上白垩统Abu Roash组G段(简称为AR-G段)为例,在岩心、铸体薄片、扫描电镜、X射线衍射、压汞实验、物性分析、地化分析及测井资料等研究基础上,对碎屑岩沉积微相及储层特征进行了研究,并对影响储层发育及分布的重要控制因素进行了分析。结果表明:(1)AESW区块AR-G段碎屑岩主要为潮坪沉积,发育潮间带、潮下带亚相及多种微相。(2)砂岩类型以石英砂岩及长石质石英砂岩为主,颗粒分选性及磨圆度较好,成分及结构成熟度较高。(3)储集空间包括剩余原生粒间孔、次生的粒间及粒内溶孔等,依据压汞曲线形态及孔喉半径分布等特征,将砂岩储层分为3类,分别对应于粗-中喉道、中-细喉道及微喉道。(4)储层主要为中孔中渗型,次为中孔低渗型,孔渗相关性较好,储层整体上以孔隙型为主。(5)储层发育及分布受沉积微相及成岩作用等多种因素控制。其中潮下带水下砂坝及潮汐水道砂体物性较好,为区内有利的储层发育微相类型。溶蚀作用能够形成次生储集空间,极大地改善了储层物性条件,最终形成潮坪相砂岩储层。展开更多
A simple,mild,and time-saving method is employed to synthesize Ag-SiO2 composite nanospheres with Ag nanoparticles uniformly distributed on the surface of SiO2 nanoparticles.The chemical elements and the morphology of...A simple,mild,and time-saving method is employed to synthesize Ag-SiO2 composite nanospheres with Ag nanoparticles uniformly distributed on the surface of SiO2 nanoparticles.The chemical elements and the morphology of Ag-SiO2 composite nanospheres were analyzed with transmission electron microscopy(TEM),X-ray power diffraction(XRD),and X-ray photoelectron spectroscopy(XPS).On the surface of Ag-SiO2 composite nanospheres,silane coupling agent(KH-550)is introduced as an intermediary to connect the surfaces of SiO2 nanospheres and Ag nanoparticles,which is also helpful for avoiding the aggregation of Ag nanoparticles.It is found that Ag-SiO2 composite nanospheres have very good catalytic properties for the reduction of organic dyes,which may have potential application in wastewater treatment.展开更多
Fluoride nanoparticles of Ln3＋（Ln3＋=Pr3＋, Nd3＋, Sm3＋, Cod3＋,Tb3＋ Dy3＋, I-I03＋, Er3＋, Tm3＋, yb3＋）/Eu3＋：LaOF and Eu3＋：LaOF with rhombohedral crystal structure were prepared by a hydrothermal-sintering ...Fluoride nanoparticles of Ln3＋（Ln3＋=Pr3＋, Nd3＋, Sm3＋, Cod3＋,Tb3＋ Dy3＋, I-I03＋, Er3＋, Tm3＋, yb3＋）/Eu3＋：LaOF and Eu3＋：LaOF with rhombohedral crystal structure were prepared by a hydrothermal-sintering method. The red fluorescence emission of Eu3＋ ions was found to be enhanced with most of the co-dopant Ln3. ions. Compared with strong fluorescence emission at 610 nm of Eu3＋：LaOF nanoparticles, the enhancement factors was up to ten times in Ln3~ （Ln3＋=Gd3＋, Dy3＋, Tm3＋）FEu3＋：LaOF co-doped nanoparticles. The results show that the asymmetry of the local environment of Eu3＋ ion was reduced by co-doping Ln3＋ ion into the nanoparticles, and that energy transfer might occur between Eu3_ and codopant Ln3＋ ions, which is suggested as the source of the observed fluorescence enhancement.展开更多
文摘埃及阿布吉拉迪盆地白垩系碎屑岩储层发育,具备良好的油气勘探开发前景。以Alam El Shawish West区块(简称为AESW区块)上白垩统Abu Roash组G段(简称为AR-G段)为例,在岩心、铸体薄片、扫描电镜、X射线衍射、压汞实验、物性分析、地化分析及测井资料等研究基础上,对碎屑岩沉积微相及储层特征进行了研究,并对影响储层发育及分布的重要控制因素进行了分析。结果表明:(1)AESW区块AR-G段碎屑岩主要为潮坪沉积,发育潮间带、潮下带亚相及多种微相。(2)砂岩类型以石英砂岩及长石质石英砂岩为主,颗粒分选性及磨圆度较好,成分及结构成熟度较高。(3)储集空间包括剩余原生粒间孔、次生的粒间及粒内溶孔等,依据压汞曲线形态及孔喉半径分布等特征,将砂岩储层分为3类,分别对应于粗-中喉道、中-细喉道及微喉道。(4)储层主要为中孔中渗型,次为中孔低渗型,孔渗相关性较好,储层整体上以孔隙型为主。(5)储层发育及分布受沉积微相及成岩作用等多种因素控制。其中潮下带水下砂坝及潮汐水道砂体物性较好,为区内有利的储层发育微相类型。溶蚀作用能够形成次生储集空间,极大地改善了储层物性条件,最终形成潮坪相砂岩储层。
基金supported by the National Natural Science Foundation of China(11174190)the Fundamental Research Funds for the Central Universities(GK201101006)
文摘A simple,mild,and time-saving method is employed to synthesize Ag-SiO2 composite nanospheres with Ag nanoparticles uniformly distributed on the surface of SiO2 nanoparticles.The chemical elements and the morphology of Ag-SiO2 composite nanospheres were analyzed with transmission electron microscopy(TEM),X-ray power diffraction(XRD),and X-ray photoelectron spectroscopy(XPS).On the surface of Ag-SiO2 composite nanospheres,silane coupling agent(KH-550)is introduced as an intermediary to connect the surfaces of SiO2 nanospheres and Ag nanoparticles,which is also helpful for avoiding the aggregation of Ag nanoparticles.It is found that Ag-SiO2 composite nanospheres have very good catalytic properties for the reduction of organic dyes,which may have potential application in wastewater treatment.
基金supported by the National Natural Science Foundation of China (Grant No. 11174190)the Fundamental Research Funds for the Central Universities (Grant No. GK201101006)+1 种基金Shaanxi Normal University, the Natural Science Foundation (Grant No. NZ11252)the Key Technologies R&D Program (Grant No.08222-19) of Ningxia Province,China
文摘Fluoride nanoparticles of Ln3＋（Ln3＋=Pr3＋, Nd3＋, Sm3＋, Cod3＋,Tb3＋ Dy3＋, I-I03＋, Er3＋, Tm3＋, yb3＋）/Eu3＋：LaOF and Eu3＋：LaOF with rhombohedral crystal structure were prepared by a hydrothermal-sintering method. The red fluorescence emission of Eu3＋ ions was found to be enhanced with most of the co-dopant Ln3. ions. Compared with strong fluorescence emission at 610 nm of Eu3＋：LaOF nanoparticles, the enhancement factors was up to ten times in Ln3~ （Ln3＋=Gd3＋, Dy3＋, Tm3＋）FEu3＋：LaOF co-doped nanoparticles. The results show that the asymmetry of the local environment of Eu3＋ ion was reduced by co-doping Ln3＋ ion into the nanoparticles, and that energy transfer might occur between Eu3_ and codopant Ln3＋ ions, which is suggested as the source of the observed fluorescence enhancement.
