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Hydraulic Conductivity Characteristics of Hot Dry Rocks under Different Fracture Modes

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Acta Geologica Sinica(English Edition) 2021年第6期95卷 1915-1925页

作者： liu Xin FENG Bo liu yulong YUAN Yilong Key Laboratory of Groundwater Resources and Environment Ministry of EducationJilin UniversityChangchun 130021China Jilin Provincial Key Laboratory of Water Resources and Environment Jilin UniversityChangchun 130021China

Enhanced geothermal system(EGS) is an effective method for developing and utilizing hot dry rock(HDR). The key to the effectiveness of EGS is the construction of an artificial fracture network. The permeability of fractures has severe effects on the heat transfer efficiency and sustainability of geothermal energy. However, the evolution characteristics of hydraulic conductivity under different failure modes have not been adequately studied for HDR. To clarify this, rocks with different failure modes were investigated by conducting thermal triaxial compression experiments, and the fluid seepage related to different rock failure modes was comprehensively investigated. The results showed that the characteristic stresses and crack surface roughness of the rock increased as the confining pressure increased. The permeability in the composited failure mode was the largest(11.4 μm;), followed by that in the Y-shaped shear failure mode(9.7 μm;), and that in the single-shear failure mode was the smallest(7.2 μm;). The confining pressures had an inhibitory effect on permeability. As the confining pressure increased from 5 to 30 MPa, the permeability decreased by 88.8%, 88.4%, and 89.9%, respectively. In contrast, the permeability was significantly enhanced by 128.3%, 94.6%, and 131% as the flow rate increased from 3 to 7 m L/min.

关键词： EGS hydraulic conductivity permeability experiment failure mode hot dry rock

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CPGS国内外研究现状及发电应用进展

能源与环保 2024年第2期46卷 171-177页

作者：魏菊艳付美龙刘玉龙长江大学石油工程学院湖北武汉430100

CPGS结合了CO_(2)地质封存和深部地热开发2种技术的优势,在实现地热能开采的同时,也对CO_(2)进行了地质封存,从而实现了温室气体减排和可再生能源利用技术的结合,CO_(2)的排放在最大限度上减少。介绍了增强型地热系统和CO_(2)羽流地热系... 详细信息

CPGS结合了CO_(2)地质封存和深部地热开发2种技术的优势,在实现地热能开采的同时,也对CO_(2)进行了地质封存,从而实现了温室气体减排和可再生能源利用技术的结合,CO_(2)的排放在最大限度上减少。介绍了增强型地热系统和CO_(2)羽流地热系统,对比分析了水和CO_(2)作为传热工质的优缺点,同时详细地介绍了CO_(2)羽流地热系统的国内外研究现状以及研究需要改进之处。最后介绍了3种CO_(2)羽流地热系统发电应用技术,即热伏发电、有机朗肯循环发电技术、基于以太阳能为辅助热源的CPGS-sCO_(2)布雷顿联合循环发电技术。

关键词： CO 2羽流地热系统增强型地热系统地热能热伏发电有机朗肯循环

A comparative study on the reactivity of charged Ni-rich and Ni-poor positive electrodes with electrolyte at elevated temperatures using accelerating rate calorimetry

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Journal of Energy Chemistry 2021年第9期30卷 523-530页

作者： Dongxu Ouyang yulong liu Ines Hamam Jian Wang Jeff Dahn State Key Laboratory of Fire Science University of Science and Technology of ChinaHefei 230026AnhuiChina Department of Physics and Atmospheric Science Dalhousie UniversityHalifax B3H4R2Canada Department of Process Engineering and Applied Science Dalhousie UniversityHalifax B3H3J5Canada

The reactivity between charged Li(Li_(0.115)Mn_(0.529)Ni_(0.339)Al_(0.017))O_(2)(Li-rich),single crystal Li(Ni_(0.8)Mn_(0.1)Co_(0.1))O_(2)(SC-NMC811),LiFePO_(4)(LFP) and LiMn_(0.8)Fe_(0.2)PO_(4)(LMFP) positive electrodes at different states of charge(SOCs) and traditional carbonate-based electrolyte at elevated temperatures is systematically studied using accelerating rate calorimetry(ARC).The results show that the SOC greatly affects the thermal stability of the Li-rich and SC-NMC811 when traditional carbonate-based electrolyte is *** an increase in the SOC increases the energy density of lithium-ion cells,it also increases the reactivity between charged Li-rich and SC-NMC811 samples with electrolyte at elevated *** comparison with SC-NMC811,the Li-rich samples are much more stable at elevated temperatures,and the latter have higher specific ***-NMC811 samples are less reactive than traditional polycrystalline *** LFP and LMFP samples show excellent thermal stability at elevated *** substitution of Fe by Mn in the olivine series positive materials does not impact the reactivity with electrolyte.

关键词： Lithium-ion cells Accelerating rate calorimetry Positive electrodes Safety

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高含水油泥热干化处理设备研究与应用进展

化工环保 2024年第5期44卷 617-622页

作者：仝坤丁晗杨东辉刘玉龙王梓先刘光全谢加才中国石油集团安全环保技术研究院有限公司北京102206 中国石油辽河油田分公司辽宁盘锦124010

高含水油泥为稳定的多相乳化体系,其脱水干化处理是后续处理处置的瓶颈。本文概述了高含水油泥的来源、组成和特点,总结了油泥热干化处理设备的研究与应用情况,对比了不同热干化设备的优缺点,分析了油泥热干化过程中存在的主要问题及原... 详细信息

高含水油泥为稳定的多相乳化体系,其脱水干化处理是后续处理处置的瓶颈。本文概述了高含水油泥的来源、组成和特点,总结了油泥热干化处理设备的研究与应用情况,对比了不同热干化设备的优缺点,分析了油泥热干化过程中存在的主要问题及原因并提出了相应的解决方法,指出破乳除油和调质预处理是降低油泥含油率、将大分子有机物小分子化的主要手段,并比较了各种破乳除油和调质预处理方法的优缺点及适应性,展望了今后热干化技术及设备的研究方向和发展趋势。

关键词：高含水油泥热干化处理调质脱稳

Interannual Variability of the Hadley Circulation Associated with Tropical Pacific SST Anomaly

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Journal of Ocean University of China 2015年第4期14卷 596-603页

作者： GONG Xiaoqing WANG Qi liu yulong The Key Laboratory of Physical Oceanography Ministry of Education Ocean University of China The Key Laboratory of Ocean-Atmospheric Interaction and Climate Universities of Shandong ProvinceOcean University of China Meteorological Institute of Tianjin National Marine Data and Information Service

The seasonal and interannual variability of zonal mean Hadley circulation are analyzed, and the important effects of sea surface temperature(SST), especially the tropical Pacific SST, on the meridional circulation are discussed. Following results are obtained: 1) the Hadley circulation presents a single clockwise(anticlockwise) cross-equator circulation in the Northern(Southern) Hemisphere winter,while it is a double-ring-shaped circulation quasi-symmetric about the equator in spring and autumn. The annual mean state just indicates the residual of the Hadley cell in winter and summer. 2) The first mode of interannual anomalies shows a single cell crossing the equator like the climatology in winter and summer but with narrower width. The second mode shows a double ring-shaped cell quasi-symmetric about the equator which is similar to the Hadley cell in spring or autumn. 3) Vertical motion of the Hadley circulation is driven by sea surface temperature(SST) through latent and sensible heat in the tropics, and the interannual anomalies are mainly driven by the SST anomaly(SSTa) in the tropical Pacific. 4) The meridional gradient of SSTa is well consistent with the lower meridional wind of Hadley circulation in the interannual part. For the spatial distribution, the meridional gradient of SSTa in the Pacific plays a major role for the first two modes while the effects of the Indian Ocean and the Atlantic Ocean can be ignored.

关键词： Hadley circulation mass stream function SSTa meridional wind vertical motion

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微生物及其代谢物提高低渗透油藏渗吸采收率

油田化学 2024年第2期41卷 302-309页

作者：付健刘宇龙张岑茜王晨月孙珊珊佘跃惠张凡长江大学石油工程学院湖北武汉430100 非常规油气湖北省协同创新中心湖北武汉430100 低碳催化与二氧化碳利用全国重点实验室湖北武汉430100 中国地质大学(北京)能源学院北京100083

自发渗吸是低渗透油藏采油的重要方法,微生物提高渗吸采收率的主要采油机理详细研究报导较少。使用从油藏环境中分离得到的专利菌株波茨坦短芽孢杆菌BS3096和铜绿假单胞菌LZ3-2,通过自发渗吸实验研究了细菌和培养基的选择、微生物的生... 详细信息

自发渗吸是低渗透油藏采油的重要方法,微生物提高渗吸采收率的主要采油机理详细研究报导较少。使用从油藏环境中分离得到的专利菌株波茨坦短芽孢杆菌BS3096和铜绿假单胞菌LZ3-2,通过自发渗吸实验研究了细菌和培养基的选择、微生物的生长条件、细菌的代谢产物生物表面活性剂、菌体影响等因素对微生物提高采收率的影响。研究结果表明,含有脂肽生物表面活性剂的渗吸液可以使油水界面张力从0.8848mN/m降低至0.2055mN/m,接触角由116.4°减小至42.8°,使岩石的润湿性从油湿变为水湿。油水界面张力的降低和岩石润湿性的改变对提高渗吸原油采收率影响显著,BS3096产的脂肽生物表面活性剂渗吸采收率可达60%;铜绿假单胞菌PAO1产的鼠李糖脂渗吸采收率为56.26%;LZ3-2产的糖蛋白类生物乳化剂对原油的具有乳化效果,乳化率为6.96%。渗吸实验中,BS3096菌体在岩心内大量累积,选择性地封堵大孔喉通道,使渗吸液分流至低渗区的小孔隙中将原油驱替出来,可使采收率提高7.5百分点。在相同的实验条件和表面活性剂浓度下,生物表面活性剂和化学表面活性剂自发渗吸作用强弱顺序为生物型>阴离子型>非离子型>阳离子型,脂肽生物表面活性剂的渗吸采收率比化学型表面活性剂高11.8百分点~41.5百分点。本研究为低渗透油藏提供了一种高效经济且环境友好的提高原油采收率的方法,为微生物及其代谢产物在现场的应用提供了理论支持。

关键词：低渗透油田微生物提高原油采收率自发渗吸生物表面活性剂采油机理

20μm Li metal modified with phosphate rich polymer-inorganic interphase applied in commercial carbonate electrolyte

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Journal of Energy Chemistry 2023年第1期76卷 233-238,I0006页

作者： Lin Lin Wei Lu Feipeng Zhao Siru Chen Jia liu Haiming Xie yulong liu School of Chemistry Northeast Normal UniversityChangchun 130024JilinChina Key Laboratory of Functional Materials Physics and Chemistry Ministry of Education Jilin Normal UniversityChangchun 130103JilinChina College of Information Technology Jilin Normal UniversitySiping 13600oJilinChina Department of Mechanical and Materials Engineering Western UniversityLondon N6A 3K7Canada

Li metal batteries are supposed to reach real application in order to fulfill the high-energy density requirement of energy storage ***,the commonly used carbonate electrolyte react with pristine Li,which result in short lifetime of lithium metal *** alleviate the side reactions of Li metal with liquid electrolyte,here we propose a phosphate rich polymer-inorganic layer as an *** to the inert properties of lithium phosphate derived from LiPO_(2)F_(2)and poly-ether,the side-reaction of carbonate solvent are *** a result,lithium metal anode sustains for 800 cycles in symmetrical cell test under 1 m A cm^(-2).Even under strict condition(20μm Li,capacity ratio N/P=2.3,electrolyte/active material=3μL mg^(-1)),coin cell test still runs stable for 150 cycles with high Coulombic ***,both LiFePO_(4)and LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)pouch cell under 5μL m A^(-1)h^(-1)condition also exhibit good stability at 0.5 C and 2 C *** this approach,high-energy and high-power Li metal batteries are approaching to real application in the near future.

关键词： Lithium metal anode Lithium phosphate Ultra-thin Lithium Solid electrolyte interphase

Unveiling and Alleviating Chemical“Crosstalk”of Succinonitrile Molecules in Hierarchical Electrolyte for High-Voltage Solid-State Lithium Metal Batteries

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Energy & Environmental Materials 2023年第3期6卷 107-116页

作者： Fang Fu Ying liu Chen Sun Lina Cong yulong liu Liqun Sun Haiming Xie National&Local United Engineering Laboratory for Power Battery Department of ChemistryNortheast Normal UniversityChangchun 130024China

Succinonitrile-based plastic crystal electrolytes have emerged for high-energy-density Li metal batteries in terms of their superior ambient ionic conductivity,low flammability,and benign compatibility with high voltage cathode,but are hampered by inherent instabilities toward Li *** hierarchical solid electrolytes structure is a fundamental approach to protect Li anode from succinonitrile attacks,with succinonitrile-based oxidation-resistance layer facing high voltage cathode and reduction-tolerant layer contacting Li ***,free succinonitrile molecules in succinonitrile-based electrolyte layer can diffuse across the electrolyte/electrolyte interface and further reach Li anode surface during the battery *** chemical“crosstalk”cause reduction-tolerant electrolyte layer to fail to protect the Li anode from the attacks of free succinonitrile *** Li_(6.4)La_(3)Zr_(1.4)Ta_(0.6)O_(12)is introduced creatively into succinonitrile-based electrolyte *** taking advantage of the complexation between La atoms in Li_(6.4)La_(3)Zr_(1.4)Ta_(0.6)O_(12)and N atoms in succinonitrile,the free succinonitrile molecules are successfully immobilized in succinonitrile-based electrolyte *** resulting low resistance and highly durable solid electrolyte interphase and cathode electrolyte interphase endow NCM622||Li batteries with remarkable cycle *** research provides a new idea for the real application of plastic crystal electrolytes in high voltage solid-state lithium metal batteries.

关键词： hierarchical solid electrolytes high voltage interface lithium metal plastic crystal

陕西小秦岭地区碳酸岩时空分布、地球化学特征及其与铀稀土成矿作用的关系

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地质力学学报 2024年第1期30卷 147-167页

作者：康清清陈正乐潘家永李鹏刘玉龙李雷江宏君高成东华理工大学核资源与环境国家重点实验室江西南昌330013 中陕核工业集团二二四大队有限公司陕西西安710024 中国地质科学院地质力学研究所北京100081 中国科学院广州地球化学研究所广东广州510640 中陕核工业集团二一四大队有限公司陕西西安710100

碳酸岩作为一种岩浆成因的岩石类型,是铀、稀土等矿产的重要含矿母岩。陕西小秦岭地区广泛分布着碳酸岩,呈大脉状、群脉状、网脉状沿断裂构造侵入太古代变质基底、长城系熊耳群火山沉积岩及蓟县系高山河群碎屑岩中。基于野外穿插关系,... 详细信息

碳酸岩作为一种岩浆成因的岩石类型,是铀、稀土等矿产的重要含矿母岩。陕西小秦岭地区广泛分布着碳酸岩,呈大脉状、群脉状、网脉状沿断裂构造侵入太古代变质基底、长城系熊耳群火山沉积岩及蓟县系高山河群碎屑岩中。基于野外穿插关系,结合碳酸岩主要矿物组合特征,将小秦岭碳酸岩划分为5个阶段,由老到新分别为:霓辉石正长岩阶段、霓辉石碳酸岩阶段、钾长石碳酸岩阶段、石英碳酸岩阶段和含沸石碳酸岩阶段,碳酸岩由早期铁碳酸岩向晚期钙碳酸岩演化。在空间上碳酸岩大致以近东西向小河断裂为界,南北部碳酸岩脉的主要类型存在明显的差异;在时间上碳酸岩总体形成于晚三叠世,但不同地段不同类型碳酸岩存在较为明显的时间差异性。碳酸岩地球化学特征显示高硅、富碱、低镁、高钡锶−稀土元素的特征,以及异常高的钾钠比值;CaO含量、TiO_(2)含量、Al_(2)O_(3)含量、铁镁质含量、全碱含量、稀土元素总量及分馏程度均有自早期碳酸岩到晚期碳酸岩逐渐降低的趋势;MnO含量与重稀土元素含量变化相反,且两者呈线性相关特征;与国内其他地区碳酸岩地球化学特征具有明显的差异性。不同类型碳酸岩具有显著的成矿专属性:早期的霓辉石正长岩、霓辉石碳酸岩、钾长石碳酸岩主要富集铀(铌),钾长石碳酸岩还富集钼;晚期的石英碳酸岩主要富集钼、重稀土元素。碳酸岩的侵入致使围岩发生了普遍的霓长岩化作用,由此导致的钾钠元素的迁移可能是碳酸岩成矿专属特征的重要指标和原因。研究结果为小秦岭地区碳酸岩型铀、稀土等多金属矿的区域勘探提供了有价值的信息。

关键词：陕西小秦岭碳酸岩类型划分地球化学成矿指示