共查询到20条相似文献，搜索用时 658 毫秒
1.
《实验室研究与探索》2017,(5)
光谱分析技术在烃类包裹体分析中得到了广泛应用,但是不少研究结果表明单光谱技术在分析时存在局限性。针对该问题提出了采用荧光光谱、拉曼光谱和红外光谱技术联合分析储层烃类包裹体方法,该方法可以弥补单光谱分析技术的不足。通过对准噶尔盆地南缘霍-玛-吐构造带储层中烃类包裹体进行多光谱技术联合分析和应用,结果表明,多光谱技术可以实现互补,有利于给出更加可靠的油气成熟度信息。 相似文献
2.
研究了MWCNT－H2O纳米流体的光学及光热特性,利用紫外-可见-近红外分光光度计结合积分球原理测试了不同质量分数的纳米流体在太阳能全波段（250 nm＜λ＜2500 nm）的透射率。利用太阳辐射对纳米流体的光热转换特性进行了测试。实验结果表明：纳米流体的透射率明显低于水的,并且纳米流体的透射率随着粒子质量分数的增加而降低。纳米流体（质量分数为0.02%）的最高温度比水提高了31.87%,集热量比水增加了54.14%。MWCNT－H2O纳米流体有望用在直接吸收式太阳能集热系统中。 相似文献
3.
川口矿田钨矿化成因类型主要为高—中温石英大脉充填型及交代蚀变型。矿田钨矿化特征及其共生组合,矿物包裹体成分,氧、硫同位素组成,稀土元素对的相关分析研究表明:其成矿物质及流体来源于岩浆分异晚期及自变质流体,前震旦系及泥盆系是成矿的有利地层围岩。 相似文献
4.
《浙江大学学报(A卷英文版)》2019,(1)
目的:微通道以其效率高、体积小等特点在许多领域有着越来越广泛的应用。特斯拉阀是一种没有运动部件的止回阀,在微流动控制领域有着明显的优势。大量研究表明,将纳米流体运用到微尺度通道中可明显提高换热效率。本文将二者结合,研究Al2O3-水纳米流体在微尺度特斯拉阀中的流动特性,为微尺度特斯拉阀以及纳米流体的进一步研究提供参考。创新点:1.将特斯拉阀应用于纳米流体的微流动控制中;2.研究不同的操作条件和不同的介质特性对纳米流体在微尺度特斯拉阀中流动特性的影响;3.研究纳米流体在微尺度特斯拉阀中不同流动方向的流体分布和压力情况,并根据特斯拉阀的压降比(反向流动压降/正向流动压降)来分析特斯拉阀对微流动的控制效果。方法:1.建立微尺度特斯拉阀的三维模型;2.通过有效性验证的数值方法,在不同操作条件和不同流动介质特性的情况下,模拟纳米流体在微尺度特斯拉阀中正反两个方向的流动;3.根据流体在流动过程中的分布以及压力的变化情况,分析温度、流体流量和纳米颗粒体积分数对纳米流体在微尺度特斯拉阀中流动特性的影响。结论:1.纳米流体在特斯拉阀中正向流动时,大部分流体进入了分叉段中的直通道;而反向流动时,大部分流体进入了分叉段中的弧形通道,并且随着流量、温度和纳米颗粒体积分数的增加,主流量的百分比增加。2.当纳米流体反向流动时,在弧形通道出口处的射流对压降的影响非常明显,这是导致反向流动压降大于正向流动的重要原因。3.特斯拉阀的压降比受流量的影响最显著;在本文的研究范围内,压降比随着流量的增加而线性增加。 相似文献
5.
江富建 《南都学坛(南阳师专学报)》1995,15(6):45-47
本文依据实践经验，探讨了祖母绿中包裹体原生产出方式及三相包裹体的鉴别特征，结合实例分析了天然与合成祖母绿中包裹体的特征和区别，并给出了测试和加工建议。 相似文献
6.
州401区块位于肇州鼻状构造的东翼,芳169区块位于州401区块西南部,该区块储层整体发育较差,但区内断层十分发育.对其开发地质特征进行研究,有助于应用油藏精细描述结果分析储层物性、砂体分布特征、构造特征、储层非均质特性及流体性质. 相似文献
7.
纳米级ZnO-TiO2复合粉体的制备及其性能研究 总被引：2，自引：0，他引：2
利用ZnCl2,TiCl4为原料，用共沉淀法合成了ZnO-TiO2复合粉体，采用XRD、TEM和IR测试手段对纳米级的粉体结构和形貌进行研究，结果表明，通过控制反应条件可得到粒径为10－40nm的复合粉体。利用紫外－－可见分光光工地检测所得样品的吸收紫外线性能，发现所得纳米ZnO-TiO2复合粉体的紫外吸收性能高于纳米TiO2及市售微米级钛白粉，且纳米ZnO-TiO2复合粉体的紫外吸收随粒径的减小而加强。 相似文献
8.
董玲 《安徽教育学院学报》2007,25(6):67-69
SiO2具有许多特性，用其作壳层材料来制备核-壳结构的纳米复合材料可以使其具有更多的特殊性质。本文综述了SiO2包裹磁性纳米粒子、量子点以及贵金属纳米粒子的研究进展。 相似文献
9.
考虑一般第二级流体的Stokes第一类问题.为了描述这样一个流体,在基本关系模型里引进分数阶微积分学方法.但是,有效地求解分数阶加热一般第二级流体的Stokes第一类问题(简写为SFP-HGSGF)的方法仍然不多.在此利用Adomian分解方法构造近似解.最后用一些数值例子来说明此方法的有效性、可靠性和简单性. 相似文献
10.
11.
The Ordovician reservoir of the Tahe oil field went through many tectonic reconstructions, and was charac-terized by multiple hydrocarbon chargings. The aim of this study was to unravel the complex charging histories. Systematicanalysis of fluid inclusions was employed to complete the investigation. Fluorescence observation of oil inclusions underUV light, and microthermometry of both oil and aqueous inclusions in 105 core samples taken from the Ordovician reservoirindicated that the Ordovician reservoir underwent four oil chargings and a gas charging. The hydrocarbon chargings oc-curred at the late Hercynian, the Indo-Sinian and Yanshan, the early Himalaya, the middle Himalaya, and the late Himalaya,respectively. The critical hydrocarbon charging time was at the late Hercynian. 相似文献
12.
Hydrocarbon charging histories of the Ordovician reservoir in the Tahe oil field, Tarim Basin, China
INTRODUCTION Researches on hydrocarbon charging historyare essentially important to exploration and de-velopment, especially for the reservoirs subject tomultiple hydrocarbon generations, discharges, mi-grations and accumulations, as was the case of theOrdovician reservoir of the Tahe oil field located atthe southwest slope of the Akekule uplift, TarimBasin, China. Regarding the hydrocarbon charginghistories of the Ordovician reservoir, previousstudies based on burial histories (Y… 相似文献
13.
Geochemical characteristics of the fluid inclusions in the Gangxi Fault Belt, Huanghua Depression, Bohai Bay Basin, China 总被引：2，自引：0，他引：2
DING Wei-wei DAI Jin-xing CHU Feng-you HAN Xi-qiu 《浙江大学学报(A卷英文版)》2007,8(7):1011-1020
We studied the geochemical characteristics of the fluid inclusions in the Ordovician carbonates and the Oligocene Shahejie Formation sandstones from 15 wells in the Gangxi Fault Belt, Huanghua Depression. The fluid inclusions are all sec- ondary with gas/liquid ratio of 5%~10%. Base on Raman they are mainly composed of H2O, CO2 and CH4. The homogenization temperatures, combined with burial and geothermal history of the host rock, indicate that the fluid flows in the Shahejie Formation and the Ordovician carbonates were trapped in Neocene. Using a VG5400 mass spectrometer, the helium isotopic compositions were analyzed. Interpretation of results suggested a significant amount of mantle-derived helium mainly accumulating in the intersections of the NWW trending Xuzhuangzi and NE trending Gangxi faults. The maturity of hydrocarbon decreases from the intersection to the outside pointing out that the fluid related to the NWW trending Xuzhuangzi and NE trending Gangxi faults. These factors implied the fluid inclusions have a close relationship to the local tectonic setting. Gangxi Fault Belt experienced intensive Neo-tectonic activities in Cenozoic. Widespread faulted-depressions and strong volcanic eruptions manifested its tec- tonic status of extensional stress field. Mantle uplift caused the movement of magma that carried mantle-derived gases and deep heat flows, the deep-rooted tension faults provided the passages for the gases and heat flows to shallow crust levels. 相似文献
14.
We first report discovery of the spinel-garnet-orthopyroxene granulite with pure CO2 fluid inclusions from the Fuyun region of the late Paleozoic Altay orogenic belt in Central Asia, NW China. The rock is characterized by an assemblage of garnet, orthopyroxene, spinel, cordierite, biotite, plagioclase and quartz. Symplectites of orthopyroxene and spinel,and orthopyroxene and cordierite indicate decompression under UHT conditions. Mineral chemistry shows that the orthopyroxenes have high XMg and Al2O3 contents (up to 9.23 wt%). Biotites are enriched in TiO2 and XMg and are stable under granulite facies conditions. The garnet and quartz from the rock carry monophase fluid inclusions which show peak melting temperatures of around -56.7 ℃, indicating a pure CO2 species being presented during the ultrahigh-T metamorphism in the Altay orogenic belt. The inclusions homogenize into a liquid phase at temperatures around 15.3-23.8℃ translating into CO2densities of the order of 0.86-0.88 g/cm3. Based on preliminary mineral paragenesis, reaction textures and petrogenetic grid considerations, we infer that the rock was subjected to UHT conditions. The CO2-rich fluids were trapped during exhumation along a clockwise P-T path following isothermal decompression under UHT conditions. 相似文献
15.
常晓玲 《延安教育学院学报》2009,23(4):79-81
桐柏地区位于秦岭-桐柏-大别造山带的中段,是进行造山带东西构造关系研究的关键地区。现今桐柏山的构造样式是NWW-SEE向的一个短轴背彤构造,桐柏杂岩构成该短轴背彤构造的核部,主要岩石为花岗质片麻岩和斜长角闪岩,斜长角闪岩是早期的岩石,呈包体产出于晚期的花刚质片麻岩,局部可见早期岩石和晚期岩石搅和在一起,黑色条带强烈变形。两侧由高压变质单元组成。 相似文献
16.
Discovery of ultrahigh-T spinel-garnet granulite with pure CO<Subscript>2</Subscript> fluid inclusions from the Altay orogenic belt,NW China 总被引：1，自引：0，他引：1
We first report discovery of the spinel-garnet-orthopyroxene granulite with pure CO2 fluid inclusions from the Fuyun region of the late Paleozoic Altay orogenic belt in Central Asia, NW China. The rock is characterized
by an assemblage of garnet, orthopyroxene spinel, cordierite, biotite, plagioclase and quartz. Symplectites of orthopyroxene
and spinel, and orthopyroxene and cordierite indicate decompression under UHT conditions. Mineral chemistry shows that the
orthopyroxenes have high XMg and Al2O3 contents (up to 9.23 wt%). Biotites are enriched in TiO2 and XMg and are stable under granulite facies conditions. The garnet and quartz from the rock carry monophase fluid inclusions which
show peak melting temperatures of around-56.7°C, indicating a pure CO2 species being presented during the ultrahigh-T metamorphism in the Altay orogenic belt. The inclusions homogenize into a
liquid phase at temperatures around 15.3–23.8°C translating into CO2 of the order of 0.86–0.88 g/cm3. Based on preliminary minerals paragenesis, reaction textures and petrogenetic grid considerations, we infer that the rock
was subjected to UHT conditions. The CO2-rich fluids were trapped during exhumation along a clockwise P-T path following isothermal decompression under UHT conditions.
Project supported by the National Basic Research Program (973) of China (No. 2001CB409801), the Exemplary Young Teacher Education
and Scientific Research Award Plan of China University, and Postdoctoral Fund of China (No. 2003033033), Postdoctoral Fund
of Zhejiang Province, and Starting Fund of Education Ministry, China 相似文献
17.
沿煤层顶板水平井分段压裂煤层气开采技术研究 总被引：1，自引：0，他引：1
构造煤发育地区采用垂直井压裂井、多分枝水平井、水平对接等钻完井方式,很难获得经济产量。构造煤破碎松软,钻、完井困难,如果加大钻井液粘度,又会对煤层严重污染,难以形成有效的渗流通道。如果采用沿煤层顶或直接顶板底部钻水平井,进行水平井分段压裂,可有效提高煤层气渗流率,避免钻井液、压裂液直接作用于煤层而造成的储层污染。通过分段压裂在煤层及顶板处形成大范围的三维裂隙网络,可大幅度地提高单井产量和经济效益,有效超前解决煤矿瓦斯突出和涌出问题。基于上述理念设计施工的宣东二号煤矿XC-01H井,在液柱高度325 m时的排采初期已开始产气,该技术有望突破构造煤采气瓶颈。 相似文献
18.
This article reports on the complex web experienced by young people when making decisions to report bullying in school. The study was conducted in the secondary school of an independent day and boarding school in the east of England. A Participatory Action Research approach was used with student voice and perspective at its core. This study involved five students as co-researchers with the first author to explore the concept of ‘snitching’ about bullying. Data were collected from the wider student group through a variety of methods including questionnaires, focus groups and interviews. The findings suggest that the process of reporting bullying is more complex than adults once thought. Students have to negotiate a complex web in firstly deciding if the bullying is serious enough to report. The concept of ‘serious’ bullying is contentious, particularly between boarders and day students, but physical abuse and/or repetition tended to be characteristic of ‘serious’ bullying. Once considered ‘serious’ enough, students have to weigh up the potential repercussions from the bully or the wider friendship group if they ‘snitch’. Students were therefore in conflict between loyalty to the bully and wider friendship group in deciding if unfairness had taken place and should be reported. Finally students needed to decide who they trusted to report the bullying to. The students in this study often reported to teachers who they perceived as supportive and authoritative. 相似文献
19.
邓小平认为,周边是中国地缘外交的核心,中美、中俄、中印关系是中国地缘外交的支点,亚太地区是中国地缘外交的基点,欧洲大陆是中国地缘外交的板块。中国地缘外交的目标是发挥全球作用。 相似文献
20.
钝顶螺旋藻藻胆体核心与藻蓝蛋白的重组 总被引：1，自引：0，他引：1
用钝项螺旋藻进行了藻胆体核心和藻蓝蛋白重组的研究.在室温荧光发射光谱中,藻胆体核心-藻蓝蛋白重组复合物的荧光发射峰位于663nm,与藻蓝蛋白的室温荧光发射峰643nm和藻蓝蛋白 藻胆体核心混合物(未重组)的室温荧光发射峰648nm相比,荧光发射峰向长波方向发生了移动,并向藻胆体核心室温荧光发射峰664nm逼近.说明藻蓝蛋白与藻胆体核心发生了重组,而且重组效果较好.在液氮温度荧光发射光谱中,其结果也表明藻蓝蛋白与藻胆体核心发生了重组. 相似文献