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Study of the Surface Morphology of Gas Hydrate

Journal of Ocean University of China 2020年第2期19卷 331-338页

作者： sun jianye LI Chengfeng HAO Xiluo LIU Changling CHEN Qiang WANG Daigang The Key Laboratory of Gas Hydrate Ministry of Natural ResourcesQingdao Institute of Marine GeologyQingdao 266071China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and TechnologyQingdao 266071China International Center for Gas Hydrate Peking UniversityBeijing 100871China

Study of the surface morphology of gas hydrate is of great importance in understanding its physical properties and *** order to investigate the surface morphology of different types(sI and sII)and occurrences(pore-filling and fracture-filling)of gas hydrate,both lab-synthesized and drilled-gas hydrate samples were measured using cryo-scanning electron microscopy(cryo-SEM).Results showed that the surface of s I hydrate was relatively smooth,and spongy nano-pores(200–400 nm)gradually occurred at the surface during continuous *** surface of sII hydrate was more compact,showing a tier-like *** occurred in quartz sand and usually filled the pores of the sediments and both hydrate and sediments were cemented with each *** observation of the gas hydrates collected from the South China Sea showed that the surface morphology and contact relation with sediments varied with hydrate *** instance,hydrates dispersed in sediments mainly filled the pores of the *** existence of microorganism shells,such as foraminifera,was beneficial to the formation of gas *** hydrate occurred as a massive or vein structure,it was easily distinguished from the surrounding *** surface of hydrate with massive or vein structure showed two distinct characters:one was dense and smooth,the other is porous(several to tens of micrometers in diameter).The occurrence of different hydrate morphologies was probably caused by the supplement rates of methane gas.

关键词： gas hydrate surface morphology cryo-SEM grain contacts

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Influence of foraminifera on formation and occurrence characteristics of natural gas hydrates in fine-grained sediments from Shenhu area, South China Sea

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Science China Earth Sciences 2016年第11期59卷 2223-2230页

作者： LI ChengFeng HU GaoWei ZHANG Wei YE YuGuang LIU ChangLing LI Qing sun jianye Key Laboratory of Gas Hydrate Ministry of Land and Resources Qingdao Institute of Marine Geology Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and Technology College of Information and Control Engineering China University of Petroleum

Marine gas hydrates accumulate primarily in coarse-grained, high-permeability layers; however, highly saturated natural gas hydrates have been discovered in the fine-grained sediments of Shenhu area, South China Sea(SCS). This may be explained by key factors, such as the great abundance of foraminifera shells. In this paper, by analyzing the SCS foraminifera structure and performing hydrate formation experiments in the foraminifera shells, the contribution of foraminifera to hydrate accumulation in the SCS was investigated from a microscopic point of view. Simulations of hydrate formation were carried out in both pure SCS foraminifera shells and the host sediments. Pore structures in typical foraminifera were studied by use of micro-focus X-ray computed tomography(CT) and scanning electron microscopy(SEM). Hydrate growth and occurrence characteristics in the foraminifera shells were observed in-situ. The results showed that the presence of foraminifera significantly enhanced the effective porosity of the SCS sediments. Moreover, while the hydrates grew preferentially in the chambers of the coarse-grained foraminifera by adhering to the inner walls of the foraminifera shells, no apparent hydrate accumulation was observed in the fine-grained or argillaceous matrix. These findings provide a basis for further studies on the accumulation mechanism of hydrates and physical properties of hydrate reservoir in the South China Sea.

关键词： Shenhu area Foraminifera Gas hydrate Occurrence characteristics X-ray computed tomography

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Effect of Methane Gas on Acoustic Characteristics of Hydrate-Bearing Sediment–Model Analysis and Experimental Verification

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Journal of Ocean University of China 2021年第1期20卷 75-86页

作者： BU Qingtao HU Gaowei LIU Changling DONG Jie XING Tongju sun jianye LI Chengfeng MENG Qingguo The Key Laboratory of Gas Hydrate Ministry of Natural ResourcesQingdao Institute of Marine GeologyQingdao 266071China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China Qingdao Geological Engineering Survey Court Qingdao 266100China

Gas leakage is an important consideration in natural systems that experience gas hydrate accumulation.A number of velocity models have been created to study hydrate-bearing sediments,including the BGTL theory,the weighted equation,the Wood equation,the K-T equation,and the effective medium *** previous work,we regarded water as the pore fluid,which meant its density and bulk modulus values were those of *** approach ignores the presence of gas,which results in a biased calculation of the pore fluid's bulk modulus and *** take into account the effect of gas on the elastic wave velocity,it is necessary to recalculate the bulk modulus and density of an equivalent ***,a high-pressure reactor device for simulating leakage systems was developed to establish the relationship between wave velocity and hydrate saturation in methane-flux mode.A comparison of the values calculated by the velocity model with the experimental data obtained in this study indicates that the effective medium theory(EMT,which considers gas effects)is more applicable than other *** hydrate saturations of 10%–30%,the result ranges between EMT-B(homogenous gas distribution)and EMT-B(patchy gas distribution).For hydrate saturations of 30%–60%,the results are similar to those of the EMT-B(homogenous gas distribution)mode,whereas hydrate saturations of 60%–70%yield results similar to those of the EMT-A *** hydrate saturations greater than 80%,the experimental results are similar to those of the EMT-B *** results have significance for hydrate exploitation in the South China Sea.

关键词： natural gas hydrate methane gas acoustic properties wave velocity model simulation experiment

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Interactions between hydrocarbon-bearing fluids and calcite in fused silica capillary capsules and geological implications for deeply-buried hydrocarbon reservoirs

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Science China Earth Sciences 2022年第2期65卷 299-316页

作者： Zihao JIN Guanghui YUAN Yingchang CAO Keyu LIU Yanzhong WANG jianye sun Xiluo HAO Ling ZHOU Yihan WEI Shuqi WU School of Geosciences China University of PetroleumQingdao 266580China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China Qingdao Institute of Marine Geology China Geological SurveyQingdao 266071China

During the burial processes of deep/ultra-deep hydrocarbon reservoirs,the interactions between hydrocarbon-bearing fluids and reservoirs significantly affect the quality evolution of hydrocarbons and reservoirs;thus,this topic requires further *** this study,the continuous evolution and the coupling mechanisms in various anhydrous and hydrous nC_(16)H_(34)-(water)-(calcite)systems in fused silica capillary capsules(FSCCs)were investigated using laser Raman spectroscopy,fluorescence color analysis,and fluorescence spectroscopy,and the mineral alterations were analyzed using scanning electron microscopy(SEM).The experimental results show that extensive organic-inorganic interactions occur in the systems if water is present,and different inorganic components have different effects on hydrocarbon *** water promotes freeradical thermal cracking and steps oxidation,forming more low-molecular-weight hydrocarbons,CO_(2),and organic acids(e.g.,acetic acids)but suppresses the free-radical cross-linking,generating less high-molecular-weight ***,in the presence of CaCl_(2) water,the yields of hydrocarbon gases are lower than in the distilled water system because high concentrations of Ca ions inhibit the generation of free ***,which exhibit different surface reactivities in different fluid conditions,affect hydrocarbon degradation in different *** the anhydrous nC16H34-calcite system,calcites promote the generation of both hydrocarbon gases and high-molecular-weight *** contrast,in the hydrous nC16H34-distilled(CaCl_(2))watercalcite system,calcites promote the generation of hydrocarbon gases and suppress the generation of high-molecular-weight *** also reacts with organic acids via surface reactions to form secondary ***,except for the formation temperature and pressure,organic-inorganic interactions are controlled by multiple factors,such as the water saturation,water typ

关键词： Hydrocarbon-bearing fluids Calcite Organic-inorganic interaction Fused silica capillary capsules Surface reaction

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Evaluation of the Shallow Gas Hydrate Production Based on the Radial Drilling-Heat Injection-Back Fill Method

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Journal of Ocean University of China 2024年第1期23卷 119-128页

作者： CHEN Qiang WAN Yizhao WU Nengyou sun jianye WANG Jian LIU Changling LI Yanlong LI Chengfeng HU Gaowei Key Laboratory of Gas Hydrate Ministry of Natural ResourcesQingdao 266071China Laboratory for Marine Mineral Resources Laoshan LaboratoryQingdao 266071China CNPC Offshore Engineering Company Limited Beijing 100028China Technology Innovation Center for Marine Methane Monitoring Ministry of Natural ResourcesQingdao 266071China

It has been evidenced that shallow gas hydrate resources are abundant in deep oceans *** geological back-ground,occurrence,and other characteristics differ significantly from deep-seated *** of the high risk of well construction and low production efficiency,they are difficult to be recovered by using conventional oil production *** a result,this paper proposes an alternative design based on a combination of radial drilling,heat injection,and backfilling ***-branch holes are used to penetrate shallow gas hydrate reservoirs to expand the depressurization area,and heat injection is utilized as a supplement to improve gas *** information collected from an investigation site close to the offshore production well in the South China Sea is used to assess the essential components of this plan,including well construction stability and gas production *** demonstrates that the hydraulic fracturing of the 60mbsf overburden layer can be prevented by regulating the drilling fluid ***,the traditional well structure is unstable,and the suction anchor is advised for better mechanical *** gas produc-tion rate can be significantly increased by combining hot water injection and depressurization ***,the suitable produc-tion equipment already in use is discussed.

关键词： shallow gas hydrate trail production radial drilling-heat injection-back fill method experimental and numerical simulation

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A matrix metalloproteinase-responsive hydrogel system controls angiogenic peptide release for repair of cerebral ischemia/reperfusion injury

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Neural Regeneration Research 2025年第2期20卷 503-517页

作者： Qi Liu jianye Xie Runxue Zhou Jin Deng Weihong Nie Shuwei sun Haiping Wang Chunying Shi Department of Human Anatomy Histology and EmbryologySchool of Basic MedicineQingdao UniversityQingdaoShandong ProvinceChina Department of Neurology The Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceChina Department of General Practice The Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceChina

Vascular endothelial growth factor and its mimic peptide KLTWQELYQLKYKGI(QK)are widely used as the most potent angiogenic factors for the treatment of multiple ischemic ***,conventional topical drug delivery often results in a burst release of the drug,leading to transient retention(inefficacy)and undesirable diffusion(toxicity)in ***,a drug delivery system that responds to changes in the microenvironment of tissue regeneration and controls vascular endothelial growth factor release is crucial to improve the treatment of ischemic *** metalloproteinase-2(MMP-2)is gradually upregulated after cerebral ***,vascular endothelial growth factor mimic peptide QK was self-assembled with MMP-2-cleaved peptide PLGLAG(TIMP)and customizable peptide amphiphilic(PA)molecules to construct nanofiber hydrogel ***-TIMP-QK was found to control the delivery of QK by MMP-2 upregulation after cerebral ischemia/reperfusion and had a similar biological activity with vascular endothelial growth factor in *** results indicated that PA-TIMP-QK promoted neuronal survival,restored local blood circulation,reduced blood-brain barrier permeability,and restored motor *** findings suggest that the self-assembling nanofiber hydrogel PA-TIMP-QK may provide an intelligent drug delivery system that responds to the microenvironment and promotes regeneration and repair after cerebral ischemia/reperfusion injury.

关键词： angiogenesis biomaterial blood-brain barrier cerebral ischemia/reperfusion injury control release drug delivery inflammation QK peptides matrix metalloproteinase-2 neuroprotection self-assembling nanofiber hydrogel

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浅论格里菲斯对电影语言的探索

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北京电影学院学报 2009年第2期 78-83页

作者：孙建业北京电影学院电影研究所2006级硕士研究生

格里菲斯作为世界电影史上具有里程碑意义的导演,不仅完善了叙事电影的基本语言,并将之标准化,还发展了电影剪辑技巧,拓宽了电影的表现时空,为蒙太奇理论的提出奠定了美学基础,他大量借鉴戏剧、文学作品及其叙事技巧,提升了电影的艺术地... 详细信息

格里菲斯作为世界电影史上具有里程碑意义的导演,不仅完善了叙事电影的基本语言,并将之标准化,还发展了电影剪辑技巧,拓宽了电影的表现时空,为蒙太奇理论的提出奠定了美学基础,他大量借鉴戏剧、文学作品及其叙事技巧,提升了电影的艺术地位,为"故事"找到了除戏剧和文学之外的第三种载体。

关键词：格里菲斯电影语言叙事空间

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从“拟人”到“拟真”:浅论美国电影中兽设形象的三种形态

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当代电影 2020年第9期 59-64页

作者：孙建业中国劳动关系学院文化传播学院

"兽设"一词源自兽迷文化圈,指人为设计的拟人化动物形象。不同国家均有其极具本土特色的兽设电影及兽设形象,而作为兽迷发源地的美国无疑最具影响力。本文借助兽设的概念,将美国电影中兽设形象区分为"拟人动物""类人动物"和"拟真动物"... 详细信息

"兽设"一词源自兽迷文化圈,指人为设计的拟人化动物形象。不同国家均有其极具本土特色的兽设电影及兽设形象,而作为兽迷发源地的美国无疑最具影响力。本文借助兽设的概念,将美国电影中兽设形象区分为"拟人动物""类人动物"和"拟真动物"这三种不同的美学形态,并从历史、造型及文化层面进行梳理和分析,以期为相关影片提供更为多元的分析视野和创作启示,也为开启兽设电影的相关研究起到抛砖引玉的作用。

关键词：兽设美国电影拟人动物类人动物拟真动物

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浅析密室空间在类型电影中的运用

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当代电影 2016年第6期 126-129页

作者：孙建业天津师范大学音乐与影视学院讲师300387

密室是电影创作中经常运用的一种特殊的"类型社区",亦更早存在于小说及戏剧创作领域中。从空间形式上看,电影中的密室空间与舞台空间呈现某些相似的特质。然而作为电影场景,密室空间并不局限于对舞台空间的具象化呈现,而是利用其自身的... 详细信息

密室是电影创作中经常运用的一种特殊的"类型社区",亦更早存在于小说及戏剧创作领域中。从空间形式上看,电影中的密室空间与舞台空间呈现某些相似的特质。然而作为电影场景,密室空间并不局限于对舞台空间的具象化呈现,而是利用其自身的空间属性来结构叙事。根据密室空间在类型电影中的不同运用方式,本文将其分为舞台型密室和功能型密室,并结合相关影片探讨两者在电影中的具体运用。

关键词：密室类型社区舞台型密室功能型密室

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国产新主流网络电影的类型缘起、创作特点与可持续对策

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电影评介 2023年第17期 1-5页

作者：孙建业中国劳动关系学院文化传播学院北京师范大学艺术与传媒学院

网络电影原称“网络大电影”,其前身可以追溯到互联网视频发展初期的“微电影”,当下则指专为互联网视频平台制作并播映的具有电影艺术特征且时长超过60分钟的视听艺术作品。2014年3月18日,爱奇艺在北京主办“网络电影成就梦想”高峰论... 详细信息

网络电影原称“网络大电影”,其前身可以追溯到互联网视频发展初期的“微电影”,当下则指专为互联网视频平台制作并播映的具有电影艺术特征且时长超过60分钟的视听艺术作品。2014年3月18日,爱奇艺在北京主办“网络电影成就梦想”高峰论坛,宣布推出“网络大电影”计划,建立网络大电影的播放、投融资及青年导演成长平台,网络电影由此正式进入国内电影市场,并逐步被行业接受和认可。1从2015年开始,随着腾讯视频、搜狐视频、优酷、芒果TV等各大互联网视频平台相继建立网络电影频道,网络电影呈现出井喷式发展态势。

关键词：网络电影网络大电影微电影电影频道青年导演互联网视频视听艺术创作特点

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