哈得油田薄砂层油藏酸化增注效果

为解决哈得油田薄砂层油藏1井区水井欠注的问题,对薄砂层油藏水井酸化增注的可行性进行了评估。通过分析该区3口水井的施工曲线、水驱特征曲线、试井解释,以及酸化前后注水量和油压的对比,酸化效果明显。酸化后提高了地层吸水能力,减缓了地层压力下降速度,水驱效果得到明显改善,有利于提高薄砂层油藏的最终采收率。     

Fluorescence enhancement of Tb（Ⅲ） complex with a new β-diketone ligand by 1,10-phenanthroline

A novel β-diketone, 1-(3,4,5-trisbenzyloxy)benzoyl-5-benzoyl acetylacetone (TBAA), and its corresponding binary Tb(III) complex Tb(TBAA)₃·2H₂O and ternary complex Tb(TBAA)₃Phen with 1,10-phenanthroline (Phen) were prepared. The ligand was characterized based on elemental analysis, FT-IR, and ¹H NMR. The complexes were characterized with elemental analysis, FT-IR and thermogravimetry and derivative thermogravimetry (TG-DTG). Photoluminescence measurements indicated that the energy absorbed by the organic ligand was efficiently transferred to the central Tb³⁺ ions, and the complex showed intense and characteristic emissions due to the ⁵D₄→ ⁷F_J transitions of the central Tb³⁺ ions. Both complexes showed longer fluorescence lifetimes. After the introduction of the second ligand Phen group, the relative emission intensities and fluorescence lifetimes of the ternary complex Tb(TBAA)₃Phen enhanced more obviously than that of the binary complex Tb(TBAA)₃·2H₂O. This indicated that the presence of the ligand TBAA and the second ligand Phen could sensitize fluorescence intensities of Tb(III) ions, and the introduction of Phen group resulted in the enhancement of the fluorescence properties of the Tb(III) ternary rare earth complex.     

Fluorescence enhancement of Tb(Ⅲ) complex with a new β-diketone ligand by 1,10-phenanthroline

A novel β-diketone, 1-(3,4,5-trisbenzyloxy)benzoyl-5-benzoyl acetylacetone (TBAA), and its corresponding binary Tb(Ⅲ) complex Tb(TBAA)3·2H2O and ternary complex Tb(TBAA)3Phen with 1,10-phenanthroline (Phen) were prepared. The ligand was characterized based on elemental analysis, FT-IR, and 1H NMR. The complexes were characterized with elemental analysis, FT-IR and thermogravimetry and derivative thermogravimetry (TG-DTG). Photoluminescence measurements indicated that the energy absorbed by the organic ligan...