一种新的调剖措施选井决策方法

根据注水井的注水量与相关生产井的产液量之间的关系,建立了油水井动态连通关系模型,并编制成软件,利用Eclipse数模软件建立的概念模型产生的动态数据对该方法进行了检验,并将该方法应用于调剖措施选井决策。临盘油田P2-20断块的应用结果表明,利用该方法可以得到较准确有效的决策结果,同时也是比较简易而又廉价的方法。     

测定气井产能的方法在实际中的应用

自从20世纪90年带以来,我国的天然气年产量已经突破了150亿m~3。随着大储量的气田不断发现,气田开发已成为近几年来的一个热点,尤其是"西气东输"工程更给天然气工业带来了广阔的前景。所有这些都预示着我国的天然气工业将进入一个更大的发展新时期,如何能准确的测定气体的产量就显得尤为重要。     

确定单种煤中纯活性组分质量的方法

在单种煤中分别加入不等量惰性物,通过测定粘结指数来确定各单种煤的惰活比与粘结指数的回归方程,并比较各单种煤纯活性组分的质量差异。     

高效液相色谱法测定叶黄素的含量

目的:建立叶黄素体外含量测定的方法。方法:本实验通过对叶黄素最大吸收波长的检测、液相色谱条件的筛选、标准曲线的建立、精密度、加样回收率、溶液稳定性等考察建立了叶黄素体外检测方法。结果:样品中的叶黄素浓度(C)与色谱峰面积(A)均呈现良好的线性关系,回归方程的相关系数r为0.9997;叶黄素测定方法的精密度高,重现性好,叶黄素的平均回收率为100.21%,RSD为1.36%;8 h内叶黄素溶液稳定性RSD为0.81%。结论:本方法的精密度、回收率、稳定性和线性范围都达到了药物分析的要求,可用于叶黄素的含量测定。     

高效液相色谱法在甘油含量测定中应用的研究

现有的甘油含量测定标准化方法,都是以假设"无杂质"为基础的。该法与气相色谱法[1],均以分离色谱为基础,解决了滴定法不具分离鉴别的缺点。完善了原气相色谱法在不同含量规格适用范围上的局限性[1],使液相色谱法对不同含量规格甘油定量测试的方法标准化成为可能。该法与气相色谱的"杂质倒扣"法的结合应用和互补,使定性鉴别和不同规格甘油含量测定得以完整组合。其检测下限:44.46 ng/μL,线性相关系数r=0.99999,回收率:98.03%~99.88%,重复性:-Sr=0.4018,-9r5=1.125,再现性:-SR=0.4463,-R95=1.250。     

Experimental Method for Determining Surface Energy Anisotropy and Its Application to Magnesia

An experimental technique has been developed to determine the surface energy anisotropy of crystalline solids. The technique is based on atomic force microscopy measurements, which are used to quantify the geometry of thermal grooves, and electron backscattered diffraction pattern measurements, which are used to specify crystallographic orientations. Observations are made at circumferential thermal grooves, where it is assumed that Herring's local equilibrium condition for a triple junction holds and that the grain-boundary energy is independent of its boundary plane. A truncated double Fourier series is used to approximate the surface energy, and the unknown coefficients of the series are determined by fitting the observations to the local equilibrium condition. The method, which should be applicable to most polycrystalline materials, has been tested on magnesia that has been thermally grooved at 1400°C in air. The maximum of the best-fit surface energy function is at (111) and the minimum is at (100). The relative surface energies of the low-index planes are γ₁₁₀/γ₁₀₀= 1.040 ± 0.008 and γ₁₁₁/γ₁₀₀= 1.072 ± 0.010.     

农药2甲4氯钠的高效液相色谱分析

建立了高效液相色谱法测定2甲4氯钠主成份的定量方法。以甲醇+1%冰乙酸水溶液(60+40)作为流动相,使用C18柱,成功地测定出2甲4氯钠有效成份含量。结果表明,2甲4氯钠在浓度400~800靏穖L-1范围内呈良好线性关系,相关系数0.99997,回收率99.4%。     

Properties,Performance and Quality Control of Recycled MgO-C Bricks

Properties, section structure and service results of recycled MgO-C bricks and new MgO-C bricks for ladle slag line of Baosteel were analyzed and compared, and the measures of improving stability and quality of recycled MgO-C bricks were summarized. The results show that: (1) High quality recycled MgO-C materials can be produced by scientific, meticulous and strict management for every process such as dismantling furnace, selection, removing impurity and slag, stacking and homogenization; (2) Using high qua...     

Experimental Procedure for Determining Transport Properties of Oxide Scales

To determine the transport properties of oxide scales growing on an alloy, a laboratory apparatus was developed which allows plotting of characteristic V = f (i) curves and oxidation with an applied electric field. The apparatus and formalism used are described; it appears that such experimental procedures allow determination of the mean ionic transport number, ti; the conductivity values σ, σ_i, and σ,_e; and the effective charge, Z*, of the moving species in the oxide scale (A1₂O₃ in the present case).     

钼酸钡的测定：沉淀滴定法

采用碳酸钠熔融分解试样，沉淀分离干扰元素，以沉淀滴定法测定钼酸钡。方法简便、快速，结果准确。     

WASP水质模型功能及应用

WASP(The water quality analysis simulation program,水质分析模拟程序),是EPA推荐使用的水质模拟软件,使用较为广泛,能够模拟池塘、小溪、湖泊、水库、河流、河口、海岸等多种水体的稳态和非稳态的水质过程。本文主要介绍了WASP的组成、原理,并对其优缺点进行了评论,最后还介绍了该模型在国内外的应用及发展前景。     

微库仑分析法在测定重油中硫含量的应用

根据SH/T 0253-1992测定轻油硫含量的操作条件多次试验,适当改进,确定测定重油中硫含量的最佳实验条件及操作条件范围,建立了用微库仑法测定重油中的硫含量的方法,准确度高,精密度好,操作简便,测定快速,可满足分析要求。     

焦油水分测定方法的改进

介绍了直接加入电石测定焦油水分的称量法,并且与蒸馏法进行了对照,用新方法测定的焦油样,其精密度和准确度较高。     

聚合物驱剖面返转确定方法研究

在油田的开发过程当中,如果储层的吸水剖面出现了反转,将会对储层的开发产生不利的影响。因此,充分的了解并认识储层发生剖面反转的机理,能够为有效的防止剖面反转的出现提供一定的理论基础。本文利用Darcy定律推导了动态阻力系数计算方法,进行室内并联岩心物理模拟实验。通过实验发现:储层发生剖面返转,其最根本的原因是因为驱替用聚合物溶液在高、低渗透率岩心当中的动态阻力系数表现规律不同,渗透率较低的储层其阻力系数的变化率表现为不断升高,而渗透率较高的渗透其阻力系数的变化率表现为不断降低,在二者的数值相等时,储层当中的吸水剖面就会出现返转。     

聚丙烯腈质量指标软测量混合模型的应用

运用多种软测量技术，提出一种多类型混合软测量模型，并用于聚丙烯腈生产过程质量指标的推理估计，证明该模型性能优良。     

高架火炬高度的确定方法

高架火炬高度确定的合理性对火炬系统的安全极其重要。简要阐述了影响高架火炬高度确定的主要因素,提出了确定高架火炬高度的具体方法。     

确定固体聚合物表面张力方法的研究

应用熔体悬滴测量装置,以聚乙烯,聚乙二醇和聚乙二醇醋酸酯为体系,系统地测量了不同温度下聚合物熔体的表面张力以及不同相对分子质量同系液体聚合物的表面张力,并比较了向低温和高相对分子质量的两种外推法间接测量固态高聚物表面张力的方法。     

Method for Determining Resistance of Mortars to Sulfate Attack

Recognizing that the sulfate resistance of mortars is affected by conditions of use, temperature, cement content, plasticity, and mortar defects, particularly those of aggregate-cement bonding, a new test for sulfate resistance was developed. Samples 2 by 2 by 10 cm are half-immersed in an MgSO₄ solution. The appearance and compressive strengths of the immersed and exposed parts are recorded at intervals and compared with those of water-stored samples. This method is quantitatively reliable, selective, rapid, and inexpensive. Results for cements tested in this way are presented, and the physical and chemical characteristics of durable mortars are elucidated. The test was used to demonstrate the sulfate resistance of a new calcium silicate cement.