稠油井注汽系统的热效率分析

建立了热采注汽系统热效率的计算模型。根据XX油田数据计算了2个注汽系统的热效率。提出了提高注汽系统热效率的三项措施：（1）降低锅炉的过剩空气系数；（2）按最大允许热损失设计地面输汽管线的保温层厚度；（3）使用视导热系数小的隔热油管，按箍增加隔热结构，防止热封隔器的泄漏等。     

Phase separation studies in RIM polyurethanes catalyst and hard segment crystallinity effects

Polyurethanes were prepared from pure 4,4′-diphenylmethane diisocyanate (MDI), 1,4-butane diol (BDO) or 1,2-ethane diol (EDO) and α,ω-hydroxyl poly(propylene oxide) (PPO) by reaction injection moulding (RIM). Hard segment (MDI + BDO or EDO) level was 45–50 wt%. The PPO had about 20% ethylene oxide copolymerized in at the chain ends to provide 80% primary OH end groups. M_n was varied from 2000 to 4000. Dibutyl tin dilaurate catalyst and mould temperature were varied. Dynamic mechanical, wide-angle X-ray, differential scanning calorimeter, molecular weight and tensile elongation measurements were made on the RIM polyurethanes. At low reaction rates (low catalyst or temperature) highly crystalline, well phase separated but low molecular weight polymers were produced. At high catalyst or temperature levels more poorly phase separated but high molecular weight, tough polymers resulted. Higher M_n PPO gave better phase separation and EDO gave higher melting temperatures. Preventing hard segment crystallinity by substituting asymmetric MDI or glycols resulted in phase compatibility.     

注聚井注入状况诊断方法研究

在室内试验和动态分析的基础上，对引起注聚井注入困难的原因进行了分析，提出了利用单井动态预测结果和实际注入动态曲线对比判断聚合物注入状况的方法，建立了预测注聚井注入动态的预测模型，并对数值模拟计算结果进行了分析。同时还评价了现场应用效果。通过数值模拟和实际注入动态曲线对比，可以初步判断待措施井有无近井地带堵塞，为提高注聚井压解堵措施的有效性奠定了基础。     

硫酸生产中内喷文氏管的设计

从分析内喷文氏管喷头旋流特征入手 ,建立有关数学模型或表达式 ,提出对内喷文氏管喷头、收缩管支管内径、喷嘴与喉管距离进行设计的方法 ,并对设计中值得注意的问题进行理论和实践上的讨论。     

我国塑料机械工业概况与发展

介绍了我国2001年塑料机械工业的生产状况，通过大量翔实的数据对我国注射机、挤出机和吹塑机三大产品的生产技术、经济技术指标及进出口市场状况进行了分析。     

栅板注射模设计

分析了栅板零件的工艺性 ,介绍了栅板注射模的设计方案及设计要点 ,并对浇注系统的设计计算作了较详细的阐述。该模具经生产验证 ,各部件动作灵活、可靠 ,生产的塑件质量符合要求。     

注蒸汽开发稠油油藏采收率计算公式探讨

从辽河油区的地质条件和开发特征出发．立足单因素分析，在着重研究渗进率、净总厚度比和单层厚度对原油采收率影响的基础上。利用《价值工程》中的“功能重要评价法”，优化出不同类型稠油油藏蒸汽吞吐和蒸汽驱开发阶段的采收率计算公式．经实际资料验证，该公式对油田开发前期确定采收率丰和可采储量，具有较好的适用性。     

油田热采注汽管道在线检测技术现状

稠油热采注汽管道由于长期在高温、高压下运行,极易发生各种损伤,如腐蚀、裂纹、材料退化等,极易造成管道承压能力降低,发生失效事故。如何检测出潜在危险性缺陷,判断注汽管道能否继续使用,是保证注汽管道安全运行的关键问题。探讨了高温压力管道在线检测技术发展现状及其应用范围。     

Green and self-lubricating polyoxymethylene composites filled with low-density polyethylene and rice husk flour

Polyoxymethylene (POM) composites filled with low-density polyethylene (LDPE) and rice husk flour (RHF) were prepared by injection molding. The POM/5 wt % LDPE/7.5 wt % RHF composite exhibited the lowest wear rate, whereas the coefficient of friction remained low, and the POM/5 wt % LDPE/5 wt % RHF composite had the best mechanical properties. X-ray diffraction analysis was carried out, and the worn surfaces were examined with scanning electron microscopy. The results showed that the addition of the filler reduced the crystallinity degree of the POM composites. The main wear mechanism for unfilled POM was adhesion, whereas for the POM composites, wear seemed to occur mainly by fatigue and abrasion. It was experimentally confirmed that the POM composite filled with LDPE and RHF, which is well-performing, low-cost, and environmentally friendly, could be a potential material for tribological applications. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008     

橇装式模块化注聚合物站的设计

针对以往固定式注聚站建设和运行所存在的问题 ,成功设计了橇装式模块化注聚合物站 ,将注聚合物工艺所需的地面设备和装置均以橇装形式集中于 6～ 7个橇块 ,实现了注聚站的模块化、整体快速搬迁和现场快速连接施工 ,有利于设备运行、管理和阶段移动配注作业。对装置的基本流程和配置 ,以及基本参数的确定做了详细阐述。现场应用情况表明 ,该注聚站完全满足注聚合物工艺要求。与常规注聚站相比 ,不但造价降低 ,而且在减少现场作业量及设备再利用等方面有了明显的改善