软件自动化测试探讨

对软件测试中自动化测试技术进行探讨,以自动化测试与传统的手工测试进行比较,在项目中采用两种测试方法进行测试,得出数据对比。并介绍了自动化测试的测试流程。以及自动化测试所存在的风险。     

地层测试测试工作制度及测试时间技术研究

目前,中原开展以MFE、APR为主的地层测试工艺过程中,测试工作制度采用固定二开二关,该测试工艺需两次关井,延长了测试时间;但二关所占时间相对较短,如果储层低渗,地层压力恢复较慢,曲线无法出现径向流,导致测试曲线无法解释或者出现错误解释结果。因此通过分析以往地层测试工作制度并结合中原油田储层特性,确定了不同储层条件下测试工作制度,建立了最小及最合理测试时间计算方法,提高了资料录取准确性。     

浅谈油田分层注水井适时测试的重要性

油田进入高含水后期开发以来,注水井调整力度越来越大,尤其是近几年水驱都是以大量的水井调整为基础,配合油井综合措施,取得了较好的开发效果。注水井分层测试也越来越受到众人关注,现在分层测试技术在不断改进,不断创新,为更好的发挥测试工作的及时性和优势,我们针对注水井管理及测试方面的种种现象进行了剖析,并就如何及时解决问题,率先推行了适时测试的原则,并通过大量工作实践对不同井的测试周期进行论证,近一年适时测试效果证明:当注水压力变化<0.2MPa,检配注水量波动<15%,这样的井测试资料是可以延用的,这一结果为今后改进测试周期提供了有力的参考依据。     

安全仪表系统的功能安全测试研究

阐述了安全仪表系统投入运行前与运行后进行的测试内容和要求,给出安全仪表功能(SIF)各组成部分的离线测试和在线测试的内容和指导原则,对实施离线测试和在线测试的流程、测试要求及方法等方面进行了详细的分析和讨论。所提出的系统和各部件的测试内容、测试要求以及测试流程和技术方法等为规划和管理安全仪表系统SIF整体安全生命周期的功能安全测试与验证提供有力的指导,也为安全仪表系统的分析、设计、开发、运行和维护等各阶段活动提供参考。     

采油测试技术的现状和发展趋势

近几年国内的油田勘探项目已进入到快速推进阶段,采油测试技术的重要意义也凸显出来。以此为基础针对采油测试技术的发展情况进行了深入探索,同时根据采油测试体系的特征和经验提出了采油测试技术在未来的发展趋向,其中包含较低渗透油层试油、黏稠油层试油和特别岩性试油的测试技术提升。     

现场测试系统与远程测试系统的统一设计

分析了远程测试系统的必要性,给出一种现场测试系统软件结构,基于LabVIEW和LXI的远程测试系统,提出C/S模式下基于复用技术的现场测试系统与远程测试系统统一设计的方法和B/S模式下基于复用技术和ActiveX的远程测试系统复用设计方法。     

冀东油田两种地层测试工艺的对比与分析

冀东油田在某海域打了两口探井,测井显示较好,经讨论都进行了地层测试。测试制度都为负压诱喷射孔、一开一关制度、连续油管氮气气举排液,试油都取得了成功,且取得了翔实可靠的测试资料。而采用的DST管柱结构却不同,本论文着重介绍了两口井DST工艺应用情况,评价了工艺的优缺点和适用井况,并提出改进措施。     

抽油井环空测试工艺优化设计

本文通过在马仙地区油气井测试工艺研究与应用这一项目中,综合测试队在下井工具串及井口防喷装置等多个方面着手,对环空井测试工艺进行了改进,使得施工作业更安全,有效减少了下井仪器遇缠、遇卡现象的发生。通过在马仙地区试井测试资料解释方面等,证明了《马仙地区油气井测试工艺研究与应用》这一项目,在环空井测试工艺及油气井试井资料解释方面的能力,都有了大幅度的提高。     

适合于深水测试的新型测试管柱

对于动力定位的深水作业平台,其在作业期间始终处于动态漂移状态。深水测试与常规浅水测试相比,作业环境更为恶劣、应急救援更为困难,而且深水测试一般测试产能较大,对于气井测试还易生成水合物堵塞流通通道,因此,深水测试具有更大的难度和挑战性,其测试工艺及测试管柱有很多特殊要求。     

激光流场测试技术在水力旋流器中的应用

介绍了7种流场测试技术（激光多普勒测速技术、相位多普勒粒子动态分析仪、二维粒子图像测速技术、立体粒子图像测速技术、全息粒子图像测速技术、层析粒子图像测速技术、体三维速度场测试技术）的基本工作原理和优缺点,分析了不同激光流场测试技术在水力旋流器流场测试中的测试细节、测试内容以及各自的优势和局限。     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively. There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized. High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing, and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually preserves suspension stability during freezing. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago, IL. Tied for first place in The John A. Gordon Best Paper Competition.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US

In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures (release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species (Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles from the southeastern region of the US.     

Novel polyurethane coating technology through glycidyl carbamate chemistry

Glycidyl carbamate chemistry combines the excellent properties of polyurethanes with the crosslinking chemistry of epoxy resins. Glycidyl carbamate functional oligomers were synthesized by the reaction of polyfunctional isocyanate oligomers and glycidol. The oligomers were formulated into coatings with several amine functional crosslinkers at varying stoichiometric ratios and cured at different temperatures. Properties such as solvent resistance, hardness, and impact resistance were dependent on the composition and cure conditions. Most coatings had an excellent combination of properties. Studies were carried out to determine the kinetics of the curing reaction of the glycidyl carbamate functional oligomers with multifunctional and model amines. Detailed kinetic analysis of the curing reactions was also undertaken. The results indicated that the glycidyl carbamate functional group is more reactive than a glycidyl ether group. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, on October 27–29, 2004, in Chicago, IL.     

Highly moisture-proof polysilsesquioxane coating prepared via facile sol-gel process

A highly moisture-proof polysilsesquioxane coating was obtained from a new bis-silylated precursor, which was synthesized from 3-aminopropyltriethoxysilane (APTES) and m-xylylene diisocyanate (m-XDI) in tetrahydrofuran (THF) and verified by ¹H MAS NMR. For direct comparison purposes, an SiO₂ coating was also prepared by the Stöber method using tetraethoxysilane (TEOS) as the reactant. Interestingly, the coating obtained from the polysilsesquioxane sol exhibited a much higher moisture resistance capability than its counterpart, which was attributed to its more compact feature between nanoparticles as characterized by N₂ absorption experiment and transmission electron microscopy (TEM). Furthermore, its high transparency of about 92% showed potential for application in the protection of optical crystals.