KINEMATIC VISCOSITY-TEMPERATURE BEHAVIOR OF HEAVY TBP-FRACTIONS (455°C+) OF ARABIAN CRUDE OILS

A generalized kinematic viscosity-temperature correlation for undefined liquid heavy petroleum fractions has been developed to represent the data for a wide range of temperature from 100°C to 200°C. The correlation is based on the experimental kinematic viscosity data of true boiling point fractions of four Arabian crude oils. The characterization property required for estimation is 50% boiling point. The proposed correlation fits the experimental data with an overall absolute error of 6.1%. Experimental measurements of kinematic viscosity of heavy true boiling point fractions of Arabian crude oils were also obtained in order to develop the proposed correlation.     

Surface geometry of slide bearings after percussive burnishing

A review of literature about the effect of oil pockets on improvement of sliding elements tribological performance as well as about the changes of surface topography during “zero-wear” process is shown. The paper presents also the results of experimental investigations done in the Department of Manufacturing Processes and Production Organisation of Rzeszow University of Technology, connected with the creation of oil pockets on sliding surfaces. In order to simulate a deterministic surface a program for the visualisation of pits was written. The procedures for assessment of the oil pocket size of specific shape and oil pockets coverage are presented. The tendencies of changes of surface topography and oil pockets dimensions during “zero-wear” process are also described.     

一种油量在机车信息平台中实时显示的方法

介绍了在运输部信息平台中实现油量实时显示的过程。油量传感器产生的电流模拟信号分成两路，一路传给无纸记录仪，另一路经过电压转变后送至信息平台的状态监测仪，经过状态监测仪的G2002B板处理后通过串口传给工控机，在信息平台上实现油量的实时显示，作用除了提醒司机适时加油以外，更重要的是判断机车作业的油耗情况。     

Solar ponds in alkaline lake and oil well regions

Solar ponds are probably the simplest technology available for the useful conversion of solar energy. The basic technology is proven. Solar ponds have been shown to be technically feasible and economically viable for many applications, particularly for thermal use. The electrical conversion and use of solar energy via solar ponds is still questionable, in general, for economic viability. By putting the untapped sources together in the South Plains region, it looks promising economically both for thermal and electrical conversions and applications. There are a number of alkaline lake basins randomly scattered in the South Plains region of the U.S.A. In that area, there are thousands of crude oil producing wells that produce brine in abundance. The selection of suitable alkaline lake basins as a solar pond site and as depository sites of brine from oil wells and the using of this brine and salty water from alkaline lakes makes the solar pond economically viable for both thermal and electrical demands in the area.     

YKGX—1油库微机控制管理系统

本文介绍了一种分布式油库自动化控制,管理微机系统YKGX-1。重点介绍了其功能、组成、原理及特点。经实际运行证明,YKGX-1系统实现了油库收、发、存、管理一体化,系统自动化程度高,发油精度优于3‰。     

极压,油性添加剂在磨削过程中的作用

油性及极压添加剂为磨削液中主要减摩添加剂，本文从物理及化学两个方面分析了两种添加剂在磨削过程中的作用机理，说明了两种添加剂的相辅作用，并采用不同的磨削液进行了实验验证．     

用于氢化的铜铬氧化物催化剂的研究

通过铜铬氧化物催化剂用于豆油的选择氢化,研究了制备方法及氢化条件对催化剂活性的影响.在所用的五种催化剂中,以Adkins法制备的催化剂活性最好,碳酸氢铵法次之.文中还对催化剂焙烧气氛、焙烧温度、焙烧时间、铜铬原子比对催化剂活性的影响以及氢化温度、催化剂用量、搅拌速度、氢流速等对反应的影响进行了较详细的讨论.     

Institutions and the supply of oil: A case study of Russia

In new institutional economics, the variance in institutions explains differences in cross-country output per capita. Institutions may also explain how the supply of oil is affected within oil-producing countries. For example in the early 1970s, as nominal oil prices increased from $3 per barrel to $11 per barrel, a number of OPEC oil producers changed the institutional environment by nationalizing their oil production and putting under government control all petroleum-related capital and infrastructure. This affected oil supplies. Similar institutional changes may be happening again now that oil prices are rising. In particular, the newly democratic Russia may be following the same path. The Russian government has already effectively taken over control of much of the oil production capacity in the country and is still heavily involved in natural gas production. In this paper, we will look at the Russian upstream oil industry as it changed from central planning to a market-oriented sector and is now swaying toward re-nationalization. Some of the laws and institutional transitions will be detailed in order to elucidate what has taken place.     

转子--轴承系统油膜失稳故障预测准则的探索

采用稳态非线性轴承理论，以多自由度转子系统为对象，运用模态降阶和变步长的Newmark积分方法，对非线性油膜力作用下轴颈振动的涡动轨迹、频谱及失稳前后的特征进行详细的计算分析，同时分析转子不平衡量的大小和转速对系统振动行为及其稳定性的影响。通过分析给出处于临界稳定状态的转子系统的轴心轨迹及其频谱图特征，这些结果有望对油膜失稳故障的预测和防范提供有应用价值的理论依据。     

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位于准噶尔盆地腹部的陆梁油气田是准噶尔盆地的又一个亿吨级油气田。笔者运用地球化学方法分析了陆梁油气田石炭纪—早白垩世地层水的类型、平面和纵向分布特征，将其划分为3个水文地质旋回，第一旋回为石炭系—三叠系，为深层静止开放的滞流型水力系统；第二旋回为侏罗系八道湾组—西山窑组，为中层弱开放的压实驱动型水力系统；第三旋回为侏罗系头屯河组—白垩系，为浅层强开放的重力驱动型水力系统。第一、二水文地质旋回是油气生成和初次运移的有利时期，淋滤期前的一段时间是油气二次运移和成藏的较好时期，第三水文地质旋回是油气藏破坏及次生油气藏形成的时期。