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An analytical model for water-oil two-phase flow in inorganic nanopores in shale oil reservoirs

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Petroleum Science 2021年第6期18卷 1776-1787页

作者： Ran Li Zhangxin Chen Keliu Wu Xing Hao jinze xu Department of Chemical and Petroleum Engineering University of CalgaryCalgaryAlbertaT2N 1N4Canada State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing102249China Illinois Institute of Technology ChicagoIL60616United States

The existence of water phase occupies oil flow area and impacts the confined oil flow behavior at the solid substrate in inorganic nanopores of shale oil reservoirs,resulting in a completely different flow pattern when compared with the single oil phase *** study proposes an analytical model to describe the water-oil two-phase *** this model,water slippage at the solid substrate is considered while oil slip is introduced to calculate the oil movement at the solid-oil boundary in dry *** is proven that the oil flow profiles of both the two-phase model and single-phase model show parabolic shapes,but the oil flow capacity drops when water takes up the flow space and the impact of water is more significant when the pore dimension is smaller than 30 ***,the oil flow velocity at a pore center is found to drop linearly given a larger water saturation in wet *** effects of surface wettability and oil properties on water-oil flow are also *** with the existing singlephase models,this model describes oil flow pattern in the wet condition with the incorporation of the influence of nanopore properties,which better predicts the oil transport in actual reservoir ***-oil relative permeability curves are also obtained to improve oil yield.

关键词： Shale oil Water films Two-phase flow Nanopore

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融合GIS的犯罪概率模型及应用

北京大学学报（自然科学版） 2013年第6期49卷 1025-1030页

作者：肖汉杜永慧徐金泽陈秀万北京大学遥感与地理信息系统研究所北京100871 中国地质大学(北京)能源学院北京100083 Schulich School of Engineering University of Calgary Calgary

考虑时间距离因素、犯罪率因素、人口数量因素、警察因素、地理环境因素和被害人职业因素等影响因子,采用数学建模方法,建立研究区域的犯罪概率评价函数。采用这种评价函数计算研究区域的犯罪概率,然后融合GIS相关技术,得到犯罪分子下... 详细信息

考虑时间距离因素、犯罪率因素、人口数量因素、警察因素、地理环境因素和被害人职业因素等影响因子,采用数学建模方法,建立研究区域的犯罪概率评价函数。采用这种评价函数计算研究区域的犯罪概率,然后融合GIS相关技术,得到犯罪分子下一步最有可能犯罪的预测区域,即犯罪的地理画像,并通过实例对方法进行验证和分析。这种新的犯罪概率模型的应用,可以为连环犯罪的侦破提供空间地理数据,缩小警方布控范围,是一种精确性较高、适宜各种地理区域的新型侦查手段,能够对连环犯罪案件的侦破起到很大的作用。

关键词：犯罪概率模型连环犯罪 GIS 犯罪地理学地理画像

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基于井周应力作用下气井出砂定量预测

中国矿业大学学报 2020年第3期49卷 523-529页

作者：李占东庞鸿徐金泽李中张海翔王殿举黑龙江省天然气水合物高效开发重点实验室黑龙江大庆163318 东北石油大学海洋油气工程学院黑龙江大庆163318 东北石油大学石油工程学院黑龙江大庆163318 Department of Chemical and Petroleum Engineering University of CalgaryCalgaryAB T2N 1N4Canada 中海油有限公司湛江分公司广东湛江524000

基于气井防砂的重要性,本文以松辽盆地徐家围子气田矿场数据为基础,研究了生产时地应力作用下的地层出砂。在4个假设条件的前提下,从地层应力角度出发,建立了基于井周应力作用下气井出砂预测模型,认为生产时出砂不仅在井壁而是延伸至井... 详细信息

基于气井防砂的重要性,本文以松辽盆地徐家围子气田矿场数据为基础,研究了生产时地应力作用下的地层出砂。在4个假设条件的前提下,从地层应力角度出发,建立了基于井周应力作用下气井出砂预测模型,认为生产时出砂不仅在井壁而是延伸至井周一定范围,即满足塑性破坏条件的出砂半径内的出砂,基于井周应力分布依据岩石破坏准则计算气井出砂半径,根据出砂半径内流体渗流规律计算得出气井在一定产量生产时的出砂量.研究结果表明:在应力分布变化方面,径向有效应力、周向有效应力、轴向有效应力分布随圆周角周期性变化,实际大小与该地原始地应力分布有关.X1井周向有效应力随井周角变化较大,极差为24.49 MPa;径向有效应力极差为1.99 MPa;轴向有效应力极差为6.62 MPa.出砂临界半径与井周应力关系密切,随着距井轴距离的增大,地层应力的综合作用逐渐不能满足岩石破坏准则,岩石不在此地应力作用下发生破碎.X1井出砂半径为0.137 m,可认为大于0.137 m范围的井周岩石不在地层应力作用下破碎出砂.该模型在气井投产初期出砂量的预测效果较好,气井出砂量误差控制在2.6%以内,这说明模型对气藏开采初期的出砂具有较好的预测作用.

关键词：出砂周向应力应力分析出砂率天然气

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油页岩原位转化热解反应特征研究综述

西南石油大学学报（自然科学版） 2021年第5期43卷 220-226页

作者：徐金泽陈掌星周德胜聂万才李苒卡尔加里大学化学与石油工程系艾伯塔卡尔加里T2N1N4 西安石油大学石油工程学院陕西西安710065 油气藏地质及开发工程国家重点实验室·西南石油大学四川成都610500 中国石油长庆油田分公司宜黄天然气项目部陕西西安710021

近年来,世界能源消耗日渐增加,作为非常规能源之一的油页岩是重要的接替资源。中国油页岩资源量丰富,居世界第四位。原位转化技术作为油页岩开采的主流技术,利用热解反应建立渗流通道,开采页岩油气。基于热解反应阶段、干酪根热解、矿... 详细信息

近年来,世界能源消耗日渐增加,作为非常规能源之一的油页岩是重要的接替资源。中国油页岩资源量丰富,居世界第四位。原位转化技术作为油页岩开采的主流技术,利用热解反应建立渗流通道,开采页岩油气。基于热解反应阶段、干酪根热解、矿物成分影响与热解协同孔隙结构演化等4个方面对原位转化过程中的热解反应特征进行研究综述:(1)热解反应各个阶段下的热物理演化与热化学反应;(2)干酪根热解的反应机理及其影响因素;(3)无机矿物分解对热解反应的促进与抑制作用;(4)热解反应协同孔隙结构演化的机理及其对微裂缝扩展的促进作用。立足于热解反应这一原位转化中的核心技术问题,力图为热解反应在油页岩与中低成熟度页岩油原位转化中的应用提供一定的参考。

关键词：油页岩原位转化热解反应孔隙结构干酪根

冈上肌体积重建与定量分析对冈上肌撕裂术后肩关节外展功能的预测价值

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浙江医学 2022年第9期44卷 935-940,I0005页

作者：侯俊成王和平周海伟徐金泽郑杰舟山医院放射诊断中心 316021 舟山医院骨科 316021

目的探讨冈上肌体积重建与定量分析对冈上肌撕裂术后肩关节外展功能的预测价值。方法选取2016年5月至2020年1月在舟山医院就诊的冈上肌撕裂患者148例作为研究对象。所有患者均接受关节镜下肩袖修复术,记录术前、术后即刻和术后1年冈上肌... 详细信息

目的探讨冈上肌体积重建与定量分析对冈上肌撕裂术后肩关节外展功能的预测价值。方法选取2016年5月至2020年1月在舟山医院就诊的冈上肌撕裂患者148例作为研究对象。所有患者均接受关节镜下肩袖修复术,记录术前、术后即刻和术后1年冈上肌MRI完整Y视图、Y视图内侧1 cm(Y+1)视图、Y视图内侧2 cm(Y+2)视图,使用AW 4.7后处理软件生成冈上肌三维重建模型,计算肌肉的横截面积和三维体积;记录冈上肌撕裂患者术后肩关节外展功能,并根据患者肩关节外展功能分为良好组99例和障碍组49例。多因素logistic回归分析冈上肌撕裂术后影响肩关节外展功能的因素。ROC曲线评估冈上肌体积重建与定量分析对冈上肌撕裂术后肩关节外展功能的预测效能。结果与术前比较,术后即刻Y视图、Y+1视图、Y+2视图冈上肌体积均增加(均P<0.05);与术后即刻比较,术后1年Y+1视图和Y+2视图冈上肌体积均增加(均P<0.05)。多因素logistic回归分析显示冈上肌撕裂情况(OR=2.460)、术后即刻冈上肌体积Y视图(OR=1.059)、术前冈上肌体积Y+1视图(OR=1.038)、术后即刻冈上肌体积Y+1视图(OR=1.062)、术前冈上肌体积Y+2视图(OR=1.065)、术后即刻冈上肌体积Y+2视图(OR=1.036)均是影响冈上肌撕裂术后肩关节外展功能的影响因素(均P<0.05)。ROC曲线显示术后即刻冈上肌体积Y+2视图预测效能最优。结论术后即刻冈上肌体积Y+2视图预测冈上肌撕裂术后肩关节外展功能恢复状况具有较好的价值。

关键词：冈上肌体积定量分析冈上肌撕裂肩关节外展功能预测价值 Y 视图

Effect of central ventilation and air conditioner system on the concentration and health risk from airborne polycyclic aromatic hydrocarbons

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Journal of Environmental Sciences 2013年第3期25卷 531-536页

作者： jinze Lv Lizhong Zhu Department of Environmental Science Zhejiang University Zhejiang Province Key Laboratory of Organic Pollution Process and Control

Central ventilation and air conditioner systems are widely utilized nowadays in public places for air exchange and temperature control,which significantly influences the transfer of pollutants between indoors and *** study the effect of central ventilation and air conditioner systems on the concentration and health risk from airborne pollutants,a spatial and temporal survey was carried out using polycyclic aromatic hydrocarbons （PAHs） as agent *** the period when the central ventilation system operated without air conditioning （AC-off period）,concentrations of 2-4 ring PAHs in the model supermarket were dominated by outdoor levels,due to the good linearity between indoor air and outdoor air （rp〉0.769,p〈0.05）,and the slopes （1.2-4.54） indicated that ventilating like the model supermarket increased the potential health risks from low molecular weight *** the period when the central ventilation and air conditioner systems were working simultaneously （AC-on period）,although the total levels of PAHs were increased,the concentrations and percentage of the particulate PAHs indoors declined *** BaP equivalency （BaPeq） concentration indicated that utilization of air conditioning reduced the health risks from PAHs in the model supermarket.

关键词： particulate gaseous PAHs health risk public place

A two-step unconditionally stable explicit method with controllable numerical dissipations

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Earthquake Engineering and Engineering Vibration 2019年第2期18卷 285-299页

作者： Li jinze Yu Kaiping Li Xiangyang Department of Astronautic Science and Mechanics Harbin Institute of Technology

A family of unconditionally stable direct integration algorithm with controllable numerical dissipations is proposed. The numerical properties of the new algorithms are controlled by three parameters α, β and γ. By the consistent and stability analysis, the proposed algorithms achieve the second-order accuracy and are unconditionally stable under the condition that α≥-0.5, β≤ 0.5 and γ≥-(1+α)/2. Compared with other unconditionally stable algorithms, such as Chang's algorithms and CR algorithm, the proposed algorithms are found to be superior in terms of the controllable numerical damping ratios. The unconditional stability and numerical damping ratios of the proposed algorithms are examined by three numerical examples. The results demonstrate that the proposed algorithms have a superior performance and can be used expediently in solving linear elastic dynamics problems.

关键词： direct integration method unconditional stability numerical dissipation dynamic analysis

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分光测色仪器三维样品架的设计

物理与工程 2010年第4期20卷 24-25页

作者：徐金泽郭振宇刘志强刘建辉王亚芳中国地质大学(北京)实验物理示范中心北京100083 北京机械工业自动化研究所北京100120

目前物理实验室常用的分光测色仪器只能对片状样品进行反射光谱的测量,但在实际应用中,特别是测量地质样品的光学特性时,需要进行无损检测,因此不能对样品进行切片处理.针对这一情况,我们设计了和测色仪器配套使用的三维样品架,该样品... 详细信息

目前物理实验室常用的分光测色仪器只能对片状样品进行反射光谱的测量,但在实际应用中,特别是测量地质样品的光学特性时,需要进行无损检测,因此不能对样品进行切片处理.针对这一情况,我们设计了和测色仪器配套使用的三维样品架,该样品架可以很好地测量三维样品的颜色.

关键词：分光测色仪器颜色测量三维样品架

A review on the application of nanofluids in enhanced oil recovery

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Frontiers of Chemical Science and Engineering 2022年第8期16卷 1165-1197页

作者： Jinjian Hou jinze Du Hong Sui Lingyu Sun School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China National Engineering Research Centre of Distillation Technology Tianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China

Enhanced oil recovery(EOR)has been widely used to recover residual oil after the primary or secondary oil recovery *** to conventional methods,chemical EOR has demonstrated high oil recovery and low operational *** have received extensive attention owing to their advantages of low cost,high oil recovery,and wide *** recent years,nanofluids have been widely used in EOR ***,several studies have focused on the role of nanofluids in the nanofluid EOR(N-EOR)***,the mechanisms related to N-EOR are unclear,and several of the mechanisms established are chaotic and *** review was conducted by considering heavy oil molecules/particle/surface micromechanics;nanofluidassisted EOR methods;multiscale,multiphase pore/core displacement experiments;and multiphase flow fluid-solid coupling *** can alter the wettability of minerals(particle/surface micromechanics),oil/water interfacial tension(heavy oil molecules/water micromechanics),and structural disjoining pressure(heavy oil molecules/particle/surface micromechanics).They can also cause viscosity reduction(micromechanics of heavy oil molecules).Nanofoam technology,nanoemulsion technology,and injected fluids were used during the EOR *** mechanism of N-EOR is based on the nanoparticle adsorption *** can be adsorbed on mineral surfaces and alter the wettability of minerals from oil-wet to water-wet *** can also be adsorbed on the oil/water surface,which alters the oil/water interfacial tension,resulting in the formation of *** are also adsorbed on the surface of nanoparticles,which reduces the asphaltene content in heavy oil,resulting in a decrease in the viscosity of oil,which helps in oil *** previous studies,most researchers only focused on the results,and the nanoparticle adsorption properties have been *** review presents the relationship between th

关键词： nanofluid EOR mechanism nanoparticle adsorption interface property internal property