不同类型在役抽油机机架受力分析

通过现场测试和检查,对油田特定区域内经过优化后的各种不同类型抽油机在额定载荷下的支架以及连杆受力情况进行了分析和评价。为在油田范围内进行机采设备的选型和推广提供一些参考。     

一种新型采油车

新型采油车是在奔驰车底盘上加装机械采油系统构成，其动力由取力器从发动机取出，通过液压传动系统传递给采油抽子，进行采油作业。现场应用结果表明，与其他采油车相比，这种新型采油车具有功率大、采油抽子具有自我保护功能、钢丝绳密封寿命长、可全方位对中油井等特点。     

积极开展泵站技术改造

为探索山丘地区中小型泵站技术改造的经验，选定南康县四个小型泵站作为泵站改造的试点站，进行现场测试，根据测试成果，分析各站存在的问题及效率偏低的原因，并拟定各站技术改造的措施，经实施后取得了较好的效果，本文就南康县泵站改造的实际效果阐明泵站改造的必要性及其改造过程中值得注意的问题。     

Analysis and Optimization Laminar Viscous Flow Through a Channel

Optimizing of laminar viscous flow through a pipe by two dimensionless values is investigated analytically. Dimensionless entropy generation and pumping power to heat transfer rate ratio are used as basis for constant viscous and the temperature dependence on the viscosity. For this matter we calculate entropy generation and pumping power for a fully developed in a pipe subjected to constant wall temperature for either constant viscosity and the variable viscosity. The variation entropy generation increase along the pipe length for viscous fluid is drawn, either the variation summation dimensionless entropy generation and the pumping power to heat transfer rate ratio are varying the fluid inlet temperature for fixed pipe length and are varying pipe length for fixed fluid inlet temperature are drawn. For low heat transfer conditions the entropy generation due to viscosity friction becomes dominant and the dependence of viscosity with the temperature becomes essentially important to be considered.     

全新冷却方式双椭圆泵浦腔的实验研究

报导一种全新冷却方式的双椭圆泵浦腔，具有较高的泵浦效率和光学均匀性。１．０６μｍ调Ｑ脉冲输出能量总转换效率η＞０．７５％     

An analytical model for charge pumping below strong inversion and accumulation

A compact analytical model for charge pumping (CP) is derived. It accounts for emission during the high and low gate bias levels and assumes instantaneous transition edges. This model, which does not apply on the top of the CP curves when using large gate voltage swings, where emission fully proceeds during the transitions edges of the gate signal, applies on all the other regions provided that the transition times of the gate signal are much shorter than the times at steady state biases. Therefore it holds at large bias swings on both edges of Elliot curves and at small bias swings on the whole Elliot curves provided that the interface traps are completely filled [1]. It is compared with the analytical model proposed by Wachnik and Lowney [2] in which emission is not accounted for at all. This model, which holds at Elliot curve maxima when small voltage swings are used, has been shown to be extremely useful for studying interface trap properties [1, 2, 3 and 4]. The CP model proposed primarily, that of Brugler and Jespers [5], is used as a reference. The model derived in this article very satisfactorily fits the experimental curves in the regions of large CP current where it holds. Discrepancies at low current levels are due to the well-known contribution of the transistor source and drain regions or could be due to edge effects. Comparing the different models and the experimental curves allows to evaluate emission and capture during different regions of the gate bias period. The three regions of CP response, depending on the gate voltage swing and involving or not emission and the full filling of the interface traps, are also evidenced.     

高功率板条固体激光器研究的进展

本文对高功率板条固体激光器研究的进展和应用前景作了综合评述。结合作者部分工作,对板条激光器的热效应、聚光器和光学谐振腔等关键问题和技术进行了物理分析。     

多级泵站老化的模糊评价模式

多级泵站是一个包括各级泵站及泵站内各种设施的复杂系统，系统内各个泵站的老化直接影响整个泵站系统的正常运行，采用单元化方法将多级泵站系统单元伦，引和泵站老化评价指标，建立了多级泵站老化的模糊评价模式，并对甘肃省景泰高扬程提水灌区多级泵站系统进行分析，提出了评价多级泵站老化程度的排序方法。     

新型无杆水力采油装置研制与应用

针对中原油田中后期开发存在的液面降低、泵挂加深使得抽油机载荷增加、冲程损失增大、杆管偏磨严重等问题,研制了新型无杆水力采油装置。该装置采用球阀换向,冲程长、冲次低。现场试验时SC38—74—4.8型无杆水力采油装置与常规管式抽油泵联用,下泵深度1650m,冲程4.8m,冲次2.7min-1,日注水量72m3,产出液60m3。结果表明,新型无杆水力采油装置延长了抽油泵的使用寿命,彻底根除了杆管偏磨,采用球阀换向,对动力液要求较低,日常维护简单。     

有杆泵抽油系统可靠性分析

抽油机井有杆果采油装置检泵故障数据的特点在于相邻两次检泵间隔之间的时间并非总是来自同一总体，可能有某种趋势的变化。通过对故障数据的趋势性检验，可验证其对某一随机过程模型的适应性，从而判定某一口井或某一批工况大致相同油井的运行可靠性，实现对生产井运行可靠性的定量评估。还通过实例说明了有杆泵抽油系统检泵故障数据的可靠性分析方法。