示踪剂技术在秦家屯油藏开发中的应用

秦家屯油田位于松辽盆地南部东南隆起区十屋断陷东北部,属于非均质断块层状油藏,通过示踪剂监测技术可以了解区块内井间连通情况,判断油井见水、来水方向及油层水驱动用程度,结合油藏静态资料研究,指导油田开发,改善开发效果,达到了稳产的目的。     

海底管道系统失效故障树的建立及定性分析

受自然环境、管道腐蚀、第三方破坏及管理不善等因素的影响,海底管道系统在铺设及运行过程中常常会失效。文中以海底管道穿孔、凝管、断裂和设备故障等主要失效形式为顶事件建立了海底管道系统失效故障树,通过系统的定性分析得到了海底管道系统失效故障树的37个一阶最小割集,进而确定了影响海底管道系统失效的4项主要因素,并针对这些主要因素提出了相应的解决问题的措施。     

一种考虑分布电容的模糊故障测距算法

提出了一种考虑分布电容的故障测距新算法。该算法基于微分方程描述的线路数学模型，利用单端信息对高压输电线路进行故障测距，保留了解微分方程算法的简单可靠、现实可行、不必考虑衰减直流分量和谐波及电网频率波动影响的特点，同时考虑过渡电阻和分布电容的影响，克服了传统解微分方程法中在经高阻接地故障时测距误差过大和忽略分布电容引起的故障定位不准确的缺点。为了检验算法的精度，进行了大量的动模实验。结果表明，算法原理正确并具有较高的测距精度。     

郯庐断裂带含油气性研究

郯庐断裂带是中国东部一条巨型断裂构造带,该文从其基本构造特征入手,分析了它的几何学、运动学和动力学特征,并进一步研究其含油气特点,认为:a)郯庐断裂带对中国东部诸多中新生代含油气盆地的形成及演化有重要的控制作用,不同演化阶段产生并控制了不同的沉积盆地(如松辽盆地和渤海湾盆地);b)郯庐断裂带对油气藏的形成及演化有重要的控制作用,不仅控制盆地烃源岩的发育、基本的储集层和盖层条件,以及圈闭的形成等等,而且对油气的生成、运移及聚集成藏、大中型油气田的形成及分布等有重要的控制作用.      

A novel distributed approach to robust fault detection and identification

In this paper, we propose a novel distributed robust fault detection and identification (RFDI) scheme for a class of nonlinear systems. Firstly, a detection and identification estimator—robust fault tracking approximator (RFTA) is designed for online health monitoring. A novel feature of the RFTA is that it can simultaneously detect and accurately identify the shape and magnitude of the fault and disturbance. Moreover, it takes less online training time compared with the traditional neural network based fault diagnosis schemes. For some distributed systems, a network of distributed estimators is constructed where the RFTA is embedded into each estimator. Then we use consensus filter to filter the outputs of each estimator. One of the most important merits of the consensus filter is that its outputs can dramatically improve the accuracy of fault detection and identification. Next, the stability of the distributed RFDI scheme is rigorously investigated. Finally, two numerical examples are given to illustrate the feasibility and effectiveness of the proposed approach.     

应用金属迭片挠性联轴器改造D1000-32型风机

使用液力偶合器因故障频繁，对高炉稳产、高产造成严重威胁，而且维修费用较高，对偶合器改造后，应用金属迭片挠性联轴器其故障率、维修费用都很低。     

岔河集油田开发调整的主要做法与成效

岔河集油田有多个受构造、岩性双重因素控制的中低渗透复杂断块油藏,其主要储集层为河流相沉积。油田20余年的开发历程是典型的滚动勘探开发过程。通过精细科学的地质研究,不断的实践和认识,制定出与其油田地质特点相适应的开发方针,完善了井网部署与加密、产吸剖面调整、油水井配套综合治理等一系列开发对策,并取得了比较好的开发效果。岔河集油田的开发实践对于类似油田开发不乏成功的经验。     

基于边界扫描的EPM9320LC84电路板故障诊断

结合自适应算法、CX-TB导通测试算法以及二进制计数测试序列，给出了用软件控制EPM9320LC84边界扫描链路，以输出图形并采集引脚对图形的响应，然后通过比较输出测试图形与采集测试图形的差异实现芯片I／O引脚印刷电路板故障的诊断方法。该测试图形便于实现，测试方法快捷、通用性强，诊断结果准确，故障覆盖率高。文中在以PC机作为边界扫描测试向量生成和故障诊断的基础上，对单芯片——EPM9320LC84的印刷电路板故障诊断进行了一些讨论。     

如何提高康明斯发动机的使用寿命

康明斯发动机在白云铁矿使用已有十多年的历史，通过对发动机故障的认真分析，找出故障原因，进而在发动机的维修和使用中加强管理，从而提高发动机的使用寿命。     

A neural network model for fault detection in conjunction with a programmable logic controller

This paper discusses the feasibility of using neural networks as a tool in the fault detection process. A neural network is integrated with a state language programmable logic controller, an important device in an automatic control system. Time series data related to time spent in a state is gathered and used as input into a neural network, for the purpose of identifying when a fault has occurred. A feedforward neural network is used to identify which (if any) of three types of faults may have occurred. Experimental results related to sensitivity and accuracy measures are presented. A brief review of related applications and research is also presented.