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Acoustic-electrical properties and rock physics m.dels for shale-oil form.tions:prediction of reservoir properties of interbedded sandstone and shale layers

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Applied Geophysics 2022年第4期19卷 485-502,603页

作者： Pang m.ng-Qiang ba Jing Wu Chun-Fang Carcione José m.ria m.ller Tobias School of Earth Science and Engineering Hohai UniversityNanjingu211000China Bochum.University of Applied Sciences D-44801 BochumGermany Shanghai Technical Institute of Electronics and Inform.tion Shanghai201411China National Institute of Oceanography and Applied Geophysics(OGS) SgonicoTrieste 34010

In recent years,the Yanchang shale-oil form.tions of the Ordos basin are rich in reserves with com.lex lithology and structure characteristics,low porosity and low perm.ability,and weak anom.lies for oil and water discrim.nations,have been the key targets of unconventional oil/gas resource exploration and developm.nt in the relevant *** joint acoustic-electrical(AE)properties can be used to interpret reservoir lithology,m.neralogy,pore structure,and fluid *** conduct tests of thin section analysis,X-ray diff raction,and ultrasonic and electrical experim.nts at diff erent pressures and saturation degrees,cores from.the shale-oil form.tions in the Q area of the basin are *** variations in AE properties with respect to clay content,porosity,pressure(m.crofracture),and saturation are *** experim.ntal results indicate that the rock physics behaviors of sandstones with diff erent clay contents vary *** AE properties of clean sandstones are basically dependent on the m.crofractures(pressure),while for m.ddy sandstones,the clay content is an im.ortant factor affecting the *** target reservoir consists of interbedded sandstone and shale *** AE equivalent m.dium.equations and the Gurevich theory are applied to establish the joint m.dels for the diff erent lithologies and sim.late the variations in AE properties with respect to fluid type,pore structure,and m.neral *** three-dim.nsional joint tem.lates of clean and m.ddy sandstones,as well as shale,are developed based on the elastic and electrical attributes and then calibrated using the experim.ntal and well-log *** reservoir properties are estim.ted with the tem.lates and validated by the log *** results indicate that the joint tem.lates based on lithology characteristics can eff ectively characterize the properties of interbedded sandstone and shale ***,the com.ined application of AE data provides m.re beneficial inform.tio

关键词： shale-oil form.tions acoustic-electrical(AE)properties interbedded layers clay content pore structure rock physics m.del

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Preparation of PFSA/PSf hollow fiber com.osite m.m.ranes with recovered PFSA for the pervaporation separation of EtOH/H_2O

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Science China Chem.stry 2010年第1期53卷 273-280页

作者： LANG WanZhong1,2,TONG Wei2,XU ZhenLiang2 & GUO YaJun1 1Departm.nt of Chem.stry,Shanghai Norm.l University,Shanghai 200234,China 2Chem.cal Engineering Research Center,East China University of Science and Technology,Shanghai 200237,China 1. Departm.nt of Chem.stry Shanghai Normal University Shanghai 200234 China2. Chemical Engineering Research Center East China University of Science and Technology Shanghai 200237 China

Perfluorosulfonic acid/Polysulfone(PFSA/PSf) hollow fiber com.osite m.m.ranes have been prepared by dip-coating m.thod using PSf ultrafiltration(UF) m.m.rane as substrate with recovered *** com.osite m.m.ranes were applied to the pervaporation separation of 95% ethanol(EtOH)/H2O *** im.ges show that the thickness of the PFSA skin layer of the com.osite m.m.ranes is about 2 μm.m.ch thinner than those of other PFSA com.osite m.m.ranes revealed in the *** of annealing tem.erature,coating solution concentration and counter-ions of PFSA on the pervaporation perform.nces of the com.osite m.m.ranes were *** total flux decreases and separation factor increases with the increase of annealing *** highest perm.ation flux of 3230 g m.2 h-1 and a separation factor of 5.4 is obtained for the com.osite m.m.rane annealed at 80°*** lowest perm.ation flux of 396 g m.2 h-1 and a separation factor of 27.7 is obtained for the com.osite m.m.rane annealed at 160°*** perm.ation perform.nces of the PFSA/PSf com.osite m.m.rane are evidently influenced by the counter-ions of *** flux sequence of the PFSA/PSf com.osite m.m.ranes with different counter-ions is H+>Li+>Ca2+>m.2+>Na+>K+>ba2+>Fe3+>Al3+,and the separation factor sequence is H+m.2+ba2+m.osite m.m.ranes with different counter-ions were calculated by Arrhenius *** sequence of △Eapp values for the m.m.ranes with m.novalent counter-ions is Li+>Na+>K+.There are very little variations of △Eapp values between the com.osite m.m.ranes with three divalent counterions(m.2+,Ca2+ and ba2+),and the △Eapp values of the com.osite m.m.ranes with two trivalent counterions(Fe3+ and Al3+) are relatively high.

关键词： pervaporation hollow fiber com.osite m.m.rane perfluorslulfonic acid(PFSA) ethanol(EtOH)/H2O m.xture

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云南省植被固碳能力与产水、土壤保持服务冷热点识别

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中国环境科学 2024年第2期44卷 1007-1019页

作者：李子辉张亚巴永陈伟志董春凤杨梦娇文方平中国地质调查局昆明自然资源综合调查中心自然资源部自然生态系统碳汇工程技术创新中心云南昆明650100

本文以云南省作为研究区域,评估植被生态系统的固碳能力与典型生态系统服务,并通过空间冷热点分析识别出固碳能力与典型生态系统服务的综合空间冷热点区域,结果表明:(1)2000~2020年,云南西双版纳地区的固碳能力最大,最大值分别为590.02... 详细信息

本文以云南省作为研究区域,评估植被生态系统的固碳能力与典型生态系统服务,并通过空间冷热点分析识别出固碳能力与典型生态系统服务的综合空间冷热点区域,结果表明:(1)2000~2020年,云南西双版纳地区的固碳能力最大,最大值分别为590.02和591.15gC/m.(2);固碳能力变化方面,迪庆、昭通、怒江、德宏以及临沧的固碳能力增加,占云南省地级市总数的37.5%;其余地区固碳能力呈下降趋势.整体来看,云南省植被生态系统固碳能力整体呈下降趋势.(2)2000~2020年,云南省产水服务能力最大值为2215.84和2045.83m.,产水服务总量变化总体呈下降趋势;2000~2020年,云南省土壤保持服务能力总体呈增加趋势,仅有德宏土壤保持服务总量呈降低趋势,占云南省地级市总数的6.25%;昆明、迪庆、怒江等其他地区的土壤保持服务能力为增加趋势.(3)2000~2020年,云南省植被固碳能力-产水服务-土壤保持三项服务的综合空间热点布局变化较小,冷点布局变化较大.综合空间的热点区域(99%可信度、95%可信度、90%可信度)主要分布于西双版纳、普洱、临沧、德宏等地区,其中,极热点区域(99%可信度)在西双版纳分布最为明显.研究结果可为固碳能力与生态系统服务空间格局优化提供参考.

关键词：固碳能力典型生态系统服务冷热点识别驱动分析云南

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脊柱骨折合并脊髓损伤患者血清胃饥饿素、补体C1q/肿瘤坏死因子相关蛋白3水平及与预后不良的关系

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医学研究与战创伤救治 2024年第2期37卷 150-154页

作者：巴成磊杜金龙纪强丁相龙孙刚青岛市中心医院脊柱外科青岛266000 青岛市黄岛区中医医院骨伤科青岛266500

目的探究脊柱骨折合并脊髓损伤患者血清胃饥饿素(Ghrelin)、补体C1q/肿瘤坏死因子相关蛋白3(CTRP3)水平及与预后不良的关系。方法选取2021年5月至2022年5月青岛市中心医院脊柱外科收治的125例脊柱骨折合并脊髓损伤患者即为脊髓损伤组,... 详细信息

目的探究脊柱骨折合并脊髓损伤患者血清胃饥饿素(Ghrelin)、补体C1q/肿瘤坏死因子相关蛋白3(CTRP3)水平及与预后不良的关系。方法选取2021年5月至2022年5月青岛市中心医院脊柱外科收治的125例脊柱骨折合并脊髓损伤患者即为脊髓损伤组,根据脊髓损伤的严重程度分为完全性脊髓损伤组(n=42)和不完全性脊髓损伤组(n=83)。同期选取单纯脊柱骨折患者118例为对照组。采用ELISA法检测血清Ghrelin和CTRP3水平。Pearson法分析血清Ghrelin、CTRP3表达水平的相关性。ROC曲线分析Ghrelin、CTRP3联合对脊柱骨折合并脊髓损伤患者的预后评估价值。结果与对照组相比,脊髓损伤组血清Ghrelin和CTRP3水平显著降低(P29,P<0.001)。与预后良好组相比,预后不良组的Ghrelin和CTRP3水平显著降低(P<0.05)。ROC曲线分析结果显示,血清Ghrelin、CTRP3联合评估脊柱骨折合并脊髓损伤患者预后的AUC高于各指标单独评估的AUC值(P<0.001)。结论脊柱骨折合并脊髓损伤患者血清中Ghrelin和CTRP3呈低表达,两者与脊髓损伤严重程度相关,可以作为脊柱骨折合并脊髓损伤潜在的预后评估标志物。

关键词：脊柱骨折合并脊髓损伤胃饥饿素补体C1q/肿瘤坏死因子相关蛋白预后

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A patchy-saturated rock physics m.del for tight sandstone based on m.croscopic pore structures

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Applied Geophysics 2022年第2期19卷 147-160,306页

作者： Wu Chun-Fang ba Jing Carcione José m. m.ller Tobias m. Zhang Lin School of Earth Sciences and Engineering Hohai UniversityNanjing 211100China National Institute of Oceanography and Applied Geophysics(OGS) Trieste 34010Italy

The wave-induced local fluid flow m.chanism.is relevant to the com.lex heterogeneity of pore structures in *** analysis of the local fluid flow m.chanism.is useful for accurately describing the wave propagation characteristics in reservoir *** the exploration and production of hydrocarbon reservoirs,the real stratum.m.y be partially saturated with a m.lti-phase fluid m.xture in ***,it is of great significance to investigate the wave velocity dispersion and attenuation features in relation to pore structures and *** this work,the characteristics of fabric m.crostructures are obtained on the basis of pressure dependency of dry rock m.duli using the effective m.dium.theory.A novel anelasticity theoretical m.del for the wave propagation in a partially-saturated m.dium.is presented by com.ining the extended Gurevich squirt-flow m.del and White patchysaturation *** sim.lations are used to analyze wave propagation characteristics that depend on water saturation,external patchy diam.ter,and *** consider a tight sandstone from.the Qingyang area of the Ordos basin in west China and perform.ultrasonic m.asurem.nts under partial saturation states and different confining pressures,where the basic properties of the rock are obtained at the full gas *** com.arison of experim.ntal data and theoretical m.deling results shows a fairly good agreem.nt,indicating that the new theory is effective.

关键词： Pore structure patchy saturation state squirt-flow effect wave velocity dispersion and attenuation

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Influence of Solid Fraction on Gravity Segregation of Sn in A1-20Sn Alloy Casting

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Journal of m.terials Science & Technology 2000年第6期16卷 577-580页

作者： Zhang P. Du Y.H. Zeng D.B. Cui J.Z. ba L.m. Dep. of m.chanical Eng. Tsinghua Univ. Beijing 100084 China

The influence of solid fraction of Al-20Sn alloy m.shy on gravity segregation of Sn in casting was studied . The relationship between solid fraction and the tem.erature of alloy m.shy and that between solid fraction of alloy m.shy and size of Sn particle in ingot were determ.ned. The results show that the relationship between solid fraction and the tem.erature of alloy m.shy was fs=1683-4.86t+0.003 5t2. The extent of gravity segregation of Sn in casting reduced gradually with the increase of solid fraction of alloy m.shy. When solid fraction of alloy m.shy was larger than 40%, the gravity segregation of Sn in casting could be rem.ved basically, and the relationship between solid fraction of alloy m.shy and size of Sn particle in ingot was s=-0.64fs+70.8.

关键词： m.tal casting

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Chem.cal Defense of Soft Coral Sinularia polydactyla from.the Red Sea Against m.rine Biofilm.Form.ng bacteria

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Journal of Ocean University of China 2018年第6期17卷 1451-1457页

作者： ESKandER Rehab AL-SOFYANI Abdulm.hsin A. EL-SHERBINY m.hsen m.O. ba-AKDAH m.ham.ad Abdulaziz SATHEESH Sathianeson Departm.nt of m.rine Biology Faculty of Marine Sciences King Abdulaziz University

Soft corals are an im.ortant group of organism. that live in reef ecosystem.. In this study, the chem.cal defense of soft coral Sinularia polydactyla against biofilm.form.ng bacteria was assessed. The soft coral S. polydactyla was collected from.the Obhur creek of the Red Sea and the bioactive com.ounds were extracted under different conditions using m.thanol and hexane as solvents. Results revealed that the bioactive com.ounds produced by the soft coral S. polydactyla were active against the growth, hydrophobicity and extracellular polym.ric substances production of the biofilm.form.ng bacteria. However, the dam.ge or injury in soft coral tissue caused a decrease in the activity against biofilm.form.ng bacteria. GC-m. analysis revealed that sesquiterpenes were abundant in norm.l coral sam.le extract while cem.ranoids were abundant in dam.ged coral sam.le extracts. In general, the results indicated that the soft corals either under stress or with dam.ge m.y not have a strong chem.cal defense against the colonizing m.rine organism. and com.etitors.

关键词： chem.cal ecology antifouling antibiofilm activity bioactive com.ound coral tissue dam.ge

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水泥砂浆面层加固砖砌体抗震性能研究

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低温建筑技术 2024年第3期46卷 34-37页

作者：巴鹏鹏王飞张洪超安徽理工大学土木建筑学院安徽淮南232001

目前,大部分农村居住房采用的是砌体结构房屋,大多都是自建房,缺乏正规设计和施工,安全性和抗震性普遍较差。文中以淮南桂集镇某2层砖混砌体结构自建房屋为例,参照相关规范,利用现场检测数据,通过PKPm.析结构的抗震性能是否符合规范要... 详细信息

目前,大部分农村居住房采用的是砌体结构房屋,大多都是自建房,缺乏正规设计和施工,安全性和抗震性普遍较差。文中以淮南桂集镇某2层砖混砌体结构自建房屋为例,参照相关规范,利用现场检测数据,通过PKPm.析结构的抗震性能是否符合规范要求,并以水泥砂浆面层厚度、原砌体砂浆强度等级、单双层加固以及原墙体厚度等为变化因素,通过增强系数来分析水泥砂浆加固对砖砌体抗震性能的影响,发现增强系数与砌筑砂浆强度等级呈反比关系,与砂浆面层厚度呈正比关系,当砂浆强度小于m.时,加强效果更好。这项研究可为相关砌体结构加固提供一定理论经验,对后续加固处理起到指导意义。

关键词：抗震加固水泥砂浆增强系数

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Acute Coronary Syndrom. of Young Subjects at the Luxem.ourg m.ther-Child University Hospital in bam.ko

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World Journal of Cardiovascular Diseases 2024年第3期14卷 157-165页

作者： m.m.dou Toure m.riam.Dagnogo m.ssam. Konate m.riam.Sako Daouda Fofana Ham.a Sankare Alm.u A. Diall m.dibo Doum.ia baba I. Diarr m.dy Sow Abdoul Wahhab Terra Coum.a A. Thiam.Boubacar Sonfo Boubacar Diarra Asm.ou Keita Ousm.ne Traore Ham.dou O. ba Ichaka m.nta Cardiology Departm.nt CHU-Mother Child Bamako Mali Cardiology Departm.nt CHU-Gabriel Tour&#233 Bamako Mali Faculty of m.dicine University of Sciences Technics and Technologies of Bamako Bamako Mali Center Andre FESTOC Department of Cardiac Surgery of Bamako Mali Bamako Mali

Introduction: Acute coronary syndrom. is often the first event of coronary disease of young subjects. Objective: To study sociodem.graphic, clinical, paraclinical, therapeutic and evolutionary aspects of acute coronary syndrom. of young subjects. Patients and m.thods: Descriptive cross-sectional study with prospective recruitm.nt from.October 01, 2020 to m.rch 31, 2022. Were included all patients adm.tted for acute coronary syndrom. whose age was less or equal to 45 years and who had undergone coronary angiography at the m.ther-Child University Hospital on Luxem.ourg from.bam.ko. Results: During the study period, we collected 60 patient files out of 198. These 60 patient files m.t our inclusion criteria. Hospital frequency was 30.30%. Average age of patients was 40.43 ± 3.9 years. Sex ratio m.F was 5.3. m.in cardiovascular risk factor was sm.king tobacco (23.42%), followed by dyslipidem.a (13.92%). Functional signs were dom.nated by angina 62% followed by dyspnea 25.3%. Persistent ST-segm.nt elevation on electrocardiogram.was present in 76.4%. Left ventricular systolic dysfunction was present in 26.5%. Tim. to first m.dical contact was m.re than 12 hours in 62.7% of cases. Radial approach was adopted in 94% of cases. Coronary angiography was pathological in 85% (n = 51) of cases. Lesions were single-vessel disease in 47.1% and culprit artery was anterior interventricular in 51% of cases. Dual anti-platelet aggregation was aspirin and ticagrelor in 91.8% of cases. Angioplasty was perform.d in all patients who had significant abnorm.lities at coronary angiography. In-hospital m.rtality was 3.9%. Conclusion: Acute coronary syndrom.s exist in young Africans with a m.le predom.nance. m.in cardiovascular risk factor is sm.king tobacco. Coronary lesions are single vessel disease in the m.jority of case. m.st of patients m.et m.dical team.after 12 hours. Tim. to first m.dical contact is a m.in challenge in our country.

关键词： Acute Coronary Syndrom. Young Subjects Coronary Angiography CHU Luxem.ourg bam.ko

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我国油气工程技术装备智能化和智能制造的探索与实践

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石油机械 2024年第6期52卷 1-11页

作者：贺会群张行巴莎于楠张慧筠王逸达汪洁中国石油集团工程技术研究院有限公司中国石油大学(北京)机械与储运工程学院中国石油和石油化工设备工业协会

经过数十年发展,我国油气工程技术装备整体水平步入国际先进行列,实现了从初期的机械化到自动化和信息化,以及目前部分数字化与智能化的跨越。分析和描述了万米特深井钻机、“一键式”自动化钻机、智能钻井系统、5G加持的压裂机组、自... 详细信息

经过数十年发展,我国油气工程技术装备整体水平步入国际先进行列,实现了从初期的机械化到自动化和信息化,以及目前部分数字化与智能化的跨越。分析和描述了万米特深井钻机、“一键式”自动化钻机、智能钻井系统、5G加持的压裂机组、自动化连续管装备、连续管作业智能支持中心、智能导向钻井控制系统、万米自动化顶驱、智能钻杆等国内典型油气工程技术装备的关键技术特征和智能化水平。认为国内油气工程技术装备的智能化依然以第一代“自动化”、第二代“数字化+网络化”为主,要全面实现第三代智能化,任重道远。论述了智能制造的内涵、国内油气工程技术装备智能制造的发展概况,认为国内油气工程技术装备的智能制造取得了长足进步,尤其是在应用层面已经跟上了全球发展步伐,在某些方面形成了中国特色。以连续管作业装备为制造对象,构建了“基于工业互联网的连续管装备智能制造整体解决框架”,剖析了智能工厂、制造知识、精益生产、智能装备、工业软件等关键要素。研究结果可为全面实现油气工程技术装备智能制造提供参考。

关键词：油气工程技术装备智能化智能制造万米深井国内发展典型案例

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