EXPERIMENTAL AND NUMERICAL INVESTIGATIONS ON HORIZONTAL OIL-GAS FLOW

Experiments were carried out to investigate the characteristics of oil-gas flow in a horizontal pipe on a large scale (with the inner diameter D = 125 mm). With the experimental data, the flow patterns were presented. Through the analyses for the flow regime transition, it was found that there was a critical superficial velocity of liquid phase for the flow regime transiting from stratified flow to slug flow. The slug flow could not occur until the superficial velocity of liquid phase was higher than the critical velocity. For the flow pattern transiting from stratified to slug flow, the transmitting velocity of gas phase decreases with the augmentation of superficial velocity of liquid phase. On the basis of the experiments, numerical simulations of different flow patterns and their transitions were performed with the use of the Volume Of Fluid (VOF) technique. The results of the computations are shown to match well with the measured data in the experiments.     

《混凝土结构设计规范》修订内容的分析与理解

应用对比分析的方法研究了《混凝土结构设计规范》(GB50010-2002)中的主要修订内容，结果表明。按照该规范设计的混凝土结构的可靠度和耐久性有明显改善且便于施工。同时，从工程实践的最新需求出发，指出了该规范的某些不足和待改善之处。     

江苏复杂断块高含水单元改善水驱效果的技术对策

在分析高含水开发单元特点的基础上,针对该阶段剩余油的品位、分布和油水关系极为复杂、挖潜难度大的技术难点,提出了适合江苏复杂断块油田高含水开发单元改善水驱开发效果的思路和工作程序、技术对策,并在真武油田高含水开发单元进行了实际应用,取得了良好的效果.     

安启华签约网域万通

日前,来自美国硅谷的高科技公司北京安启华科技有限公司(Anchiva)与专业的安全产品渠道商北京网域万通科技有限公司(网域万通)合作签约仪式暨新闻发布会在京举行。Anchiva中国区总经理李松先生和网域万通总经理邱召强出席了此次活动。根据协议,网域万通将正式成为Anchiva在中国的总代理,Anchiva将为网域万通提供完善的技术支持和丰富的渠道机制,     

油罐常用安全附件的维护与保养

目前油田使用的各式储罐基本上可分为钢制拱顶地上油罐和单盘式外浮顶储油罐两大类。这些储罐在日常运行和维护保养中的操作比较繁琐,带来的安全隐患也比较多,尤其是油罐安全附件的安全运行、检查、维护与保养,都关系到油区的日常安全生产。文章从日常运行管理方面,探讨了日常使用的油罐安全附件的日常运行、安检、维护和保养方法。     

45钢制3t锤头热处理工艺设计

分析了45钢制3t锤头用传统淬火方式进行热处理可能出现的质量问题，提出了解决这些质量问题的有效技术措施。特别介绍了“涂覆保护法”，“摇摆淬火冷却”等方法，为此类大型复杂工件的热处理工艺设计提供了一定的经验和依据。     

一种基于UWB穿戴式网络的调度算法

可穿戴式计算机是近几年的一个研究热点,穿戴式网络多个节点之间的协调通信一直是影响穿戴式计算机发展的一个重要原因,因此有必要对穿戴式网络通信进行优化。文中介绍了可穿戴式计算机以及穿戴式网络。论述了穿戴式网络中常用的几种网络技术的优缺点。然后重点解析了UWB（Ultra—WideBand）的结构模型,以及UWB通信机制,在UWB通信机制的基础上引入了动态调度的思想,由此引出具有优先级的动态UWB网络调度算法。此调度算法能够很好地协调穿戴式网络节点之前的通信,有利于推进可穿戴式计算机的发展。     

F离子掺杂TiO2的性能研究

以NH4F为掺杂剂，采用溶胶-凝胶法制备F离子掺杂型TiO2光催化剂，对其进行XRD、XPS和PL表征，结果表明，F离子掺杂ToO2由于Ti—F配位体的形成而能抑制金红石相的生成，同时F离子掺杂能增加TiO2表面缺陷浓度并降低Ti2P键的结合能，另外，由于F离子能取代Ti—OH配位体而降低了表面羟基氧浓度．光催化研究结果表明，F离子掺杂提高了TiO2光催化活性近1．5倍．     

Deformation simulation of low-temperature high-speed extrusion for 6063 Al alloy

The hot compression test of 6063 Al alloy was performed on a Gleeble-1500 thermo-simulation machine, and the forming of 6063 rod extrudate in low-temperature high-speed extrusion was simulated with extrusion ratio of 25 on the platform of DEFORM 2D successfully. From the compression experimental results, the flow stress model of this Al alloy is obtained which could be the constitutive equation in the simulation of low-temperature high-speed extrusion process. From the numerical simulation results, there is a higher strain concentration at the entrance of the die and the exit temperature reaches up to 522 °C in low-temperature high-speed extrusion, which approaches to the quenching temperature of the 6063 Al alloy. The results show that the low-temperature high-speed extrusion method as a promsing one can reduce energy consumption effectively.     

煤层气压裂技术研究

煤层气与常规天然气有较大差异,采用压裂施工可达到煤层气开发的理想效果。根据煤层气的特性,在施工中应注意压裂液、煤粉、压实性等因素所造成的伤害。