气井泡沫排水剂的评价方法研究

用当前国内外测试起泡剂性能的几种方法对七种起泡剂进行了试验研究。大量试验数据表明:起泡剂的起泡能力依评价方法不同而有差异。在分析比较了几种评价方法的优缺点后,建议用气流法为主、辅之以Ross—Miles法对气井用起泡剂进行综合评价较为符合生产实际。     

气体渗硼的热力学分析

本文通过热力学分析表明,在BCl_3+H_2介质中进行气体渗硼时,气氛中残留的H_2O、O_2不仅使BCl_3和B原子失去渗硼能力,加大了BCl_3的消耗,而且加剧了Fe-Cl化合物的生成,导致渗硼层孔洞增加。     

采气井口装置主要零部件的失效分析

对采气井口装置主要零部件的失效形式及失效模式进行了深入的分析,发现失效形式有：电化学腐蚀分布面积较大;冲蚀产生蚀槽;分布不均匀的坑蚀;腐蚀产物使闸板卡死;阀杆与闸板或阀针联接处硫化物应力腐蚀,使阀杆断裂;磨损或腐蚀造成表面损伤,材料流失,影响密封性;密封盘根老化、鼓泡,永久变形;失效模式为：腐蚀、磨损及密封件老化;易损件有：针阀的阀针与阀座;闸阀的阀板与阀座;针阀、闸阀的阀杆、密封盘根及轴承,并提出了改善采气井口装置系统可靠性的措施。     

模拟舰船燃机压气机级间流场的喷水雾化实验研究

压气机级间喷水是舰船燃气轮机较理想的中冷技术，而此技术的关键是产生小雾滴的雾化技术，本文给出了向模拟燃气轮机压气机级间流场喷水雾化实验研究的目的。设备，测量系统，雾化机理，实验方案及步骤，给出了在模拟燃气轮机压气机组间流场内进行的喷水的不同喷入方式，不同气流速度下雾化特性和对流场阻力特性影响的实验研究结果，通过对实验结果的分析，得出喷嘴的安装方式对压气机组间流场损失的影响及雾化效果影响的结论。     

基于MSP430F413 MCU的IC卡煤气表的设计与实现

提出了以TI公司MSP430系列MCU为基础的IC卡煤气表的设计思想，给出了总体设计，硬件电路设计，软件流程设计及主要模块的编程框架，讨论了低功耗问题。同时，对IC卡煤气表设计中一些应注意的问题也进行了简要的阐述。     

冲天炉气氛监控仪的研制与应用

本仪器以惠斯登电桥原理的热导式气体检测装置为主要部件，并附有连续抽气、过滤冷却和排除干扰气体的吸附装置等组成部分．它不仅能对熔炼全过程的炉气中ＣＯ２的成份进行准确而迅速地测量与显示，而且能通过排除干扰气体的测量，间接地测出气氛中氢气含量的多少．本仪器在生产实践中使用证明：炉气中ＣＯ２含量的相对变化与铁水过热温度有明显的对应关系，用本仪器所指示的ＣＯ２含量的变化规律对炉况进行监控是行之有效的手段．     

空气雾化钻井中液滴尺寸及其分布

本文讨论了空气雾化钻井中液滴大小的计算方法，分析了影响液滴尺寸的因素．发现液相和气相的相对速度、液体的表面张力以及气体中液相的体积百分数是影响液滴尺寸的主要因素．     

Methane generation from Miocene lacustrine coals and organic-rich sedimentary rocks containing different types of organic matter

Ten selected samples with varying types and amounts of organic matter from two Miocene lacustrine basins in northwestern Turkey were analyzed by programmed-temperature open-system pyrolysis to determine methane generation potential and reaction kinetics. Open-system pyrolysis was performed at heating rates 0.1, 0.7 and 5.0 K/min, where generated gases were measured using an on-line gas chromatograph. Frequency factors and activation energy distributions of reaction kinetics for methane generation from the investigated lacustrine coals and sedimentary rocks indicated that type of kerogen controls the sequential order of methane generation. Methane from Type-III kerogen is generated at lower temperatures, which will be followed by methane from Type-II and Type-I kerogen. Methane generation potentials in the range 14-35 mg CH₄/g TOC correlates also with type of organic matter. For Type-III kerogen up to 28% of the total hydrocarbon generation potential belongs to methane. The respective value is only 2% for a Type-I kerogen.     

In situ injection of THF to trigger gas hydrate crystallization: Application to the evaluation of a kinetic hydrate promoter

This paper investigates an original method to efficiently trigger gas hydrate crystallization. This method consists of an in situ injection of a small amount of THF into an aqueous phase in contact with a gas-hydrate-former phase at pressure and temperature conditions inside the hydrate metastable zone. In the presence of a CO₂–CH₄ gas mixture, our results show that the THF injection induces immediate crystallization of a first hydrate containing THF. This triggers the formation of the CO₂–CH₄ binary hydrate as proven by the pressure and temperature reached at equilibrium. This experimental method, which “cancels out” the stochasticity of the hydrate crystallization, was used to evaluate the effect of the anionic surfactant SDS at different concentrations, on the formation kinetics of the CO₂–CH₄ hydrate. The results are discussed and compared with those published in a recent article (Ricaurte et al., 2013), where THF was not injected but present in the aqueous phase from the beginning and at much higher concentrations.     

4-溴邻苯二甲酸酐中杂质的高效液相色谱分析

利用高效液相色谱,外标法定量测定4-溴邻苯二甲酸酐中苯酐、4-溴邻苯二甲酸、4-溴邻苯二甲酸酐等的含量。采用AgillentTC-C18柱,25℃,以甲醇、乙酸水溶液为流动相(体积比60∶40),检测波长为236nm。可通过一次进样在30分钟内完成对样品中主要物质的全面分析。