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您的检索式：作者名="SHAPOVALOVA Alexandra"
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| 1 | 二氧化碳水合物-石蜡段塞的结构、组分及特性显示文摘为了研究石蜡和水合物混合生成段塞的结构、组成和分解特征,在准静态条件下,从油包水乳状液中获得了3块二氧化碳水合物与石蜡形成的段塞。粉末X射线衍射和红外光谱分析表明实验室制备的段塞中含有蜡和气体水合物;热容量法和差示扫描量热法实验表明,在环境压力下段塞中气体水合物的主要成分在268 K左右开始分解,该温度比相同压力下二氧化碳水合物的平衡温度高,说明在低于冰熔点温度(273.2 K)下,段塞中的气体水合物可以有效地自我保护;通过显微观察段塞中水合物的分解过程发现,样品中的气体以小气泡的形式析出,而水合物颗粒本身在此放大倍数下不可见,表明水合物在段塞中高度分散,段塞分解后石蜡以胶状出现;流变性测量实验发现,与含蜡原油相比,段塞分解后的残余物具有较高的动切力和黏度。 | SKIBA Sergey SAGIDULLIN Aleksey SHAPOVALOVA Alexandra STRELETS Larisa MANAKOV Andrey | 2021 | 石油勘探与开发2021，48，6： | 1 |
| 2 | Texture,composition and properties of plugs formed by carbon dioxide hydrate and wax显示文摘Gas hydrates and wax are the major flow assurance problems for the transportation of produced hydrocarbons through pipelines.However,in most research works both these two problems are studied separately.Although simultaneous precipitation or deposition of these compounds in pipelines can lead to different mitigation/prevention strategies,the investi-gations in which both these problems are considered simultaneously appeared only recently.There is no information in the literature on the texture/composition and features of decomposition process of mixed wax/hydrate plugs.At the same time,this information could be useful to understand how to treat the problem of formation of these plugs.In this work,three wax/gas hydrate plugs were collected at quasi-static conditions from a water-in-oil emulsion to study their texture,composition and the features of decomposition process.Powder X-ray diffraction and IR(infrared spectroscopy)analyses showed that the plugs consisted of wax and gas hydrate.Thermovolumetric and DSC(Differential Scanning Calorimetry)experiments showed that the main part of gas hydrate in the plugs at the ambient pressure started to decompose at about 268 K.This temperature was higher than the equilibrium temperature of carbon dioxide hydrate at this pressure,indicating that the gas hydrate in the plugs could be effectively preserved at temperatures below the ice melting point(273.2 K).It was found through observation of the hydrate decomposition process in the plugs under the microscope that the gas in the samples released in small bubbles,while the hydrate particles were not visible at this magnification,indicating that the hydrate was indeed highly dispersed in the samples.A residual wax was jelly-like after decomposition of hydrate in all the cases.Rheological experiments showed that the plugs residues after decomposition of the hydrates had higher yield points and viscosities than the initial waxy crude oil origi-nally used for the experiments. | SKIBA Sergey SAGIDULLIN Aleksey SHAPOVALOVA Alexandra STRELETS Larisa MANAKOV Andrey | 2021 | Petroleum Exploration and Development2021，48，6： | 0 |
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