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A contrasting analysis of CO_(2) and N_(2) foam flood for enhanced oil recovery and geological storage of CO_(2)

Petroleum Research 2024年第1期9卷 55-60页

作者： alireza Roozbahani Farshad Soofivan ali sag.an hassoon al-tameemi Hadi Abdollahi Sogand Saatchi Abdolhamid Ansari Petroleum Engineering Department Faculty of Chemical EngineeringTarbiat Modares UniversityTehranIran School of Chemical and Petroleum Engineering Shiraz UniversityShirazIran School of Chemical and Petroleum Engineering Shiraz BranchIslamic Azad UniversityShirazIran Department of Petroleum Engineering Science and Research BranchAzad UniversityTehranIran Department of Chemistry and Chemical Engineering Rasht BranchIslamic Azad UniversityRashtIran Department of Petroleum Engineering Lamerd BranchIslamic Azad UniversityLamerdIran

Foam flooding using CO_(2)has emerged as a promising method for both enhanced oil recovery(EOR)and the storage of CO_(2)in geological *** study conducts a thorough analysis of the behavior of CO_(2)and N_(2)foams in bulk and porous media,utilizing bubble-scale analyses and foam flooding *** study compares the foamability and longevity of CO_(2)and N_(2)foams,with findings indicating that N_(2)foam bubbles tend to be smaller and less varied in size than CO_(2)foam bubbles,leading to increased foam ***,the study compares the half-lives of CO_(2)and N_(2)foams generated through sparging and winding methods,showing that N_(2)foam has half-lives 22 and 10 times greater than CO_(2)foam when produced using the sparging and winding methods,***,CO_(2)foam generated through the sparging method had a lower foaming volume than N_(2)foam due to CO_(2)'s *** the foam flooding experiments,N_(2)foam proved more effective in recovering oil from porous media than CO_(2)foam,thus demonstrating the effectiveness of the foam injection *** results offer valuable insights into the differing performance of N_(2)and CO_(2)foam floods for EOR and CO_(2)geological storage.

关键词： CO_(2) storage Foam flood Enhanced oil recovery N_(2) foam CO_(2) foam

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Magnetic-porous microspheres with synergistic catalytic activity of small-sized gold nanoparticles and titania matrix

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Frontiers of Chemical Science and Engineering 2019年第3期13卷 574-585页

作者： Kadriye Ozlem Hamaloglu Ebru sag Cigdem Kip Erhan Senlik Berna Saracoglu Kaya ali Tuncel Hacettepe University Chemical Engineering DepartmentAnkaraTurkey Cumhuriyet University Chemical Engineering DepartmentSivasTurkey

Fe3O4 nanoparticles immobilized on porous titania in micron-size range were decorated with smallsized gold nanoparticles and used as a plasmonic catalyst for the reduction of 4-nitrophenol. Monodisperse-porous magnetic titania microspheres were synthesized with bimodal pore-size distribution by the sol-gel templating method. Small-sized gold nanoparticles obtained by the Martin method were attached onto the aminated form of the magnetic titania microspheres. A significant enhancement in the catalytic activity was observed using the gold nanoparticle-decorated magnetic titania microspheres compared to gold nanoparticle-decorated magnetic silica microspheres because of the synergistic effect between small-sized gold nanoparticles and titania. The synergistic effect for gold nanoparticle-attached magnetic titania microspheres could be explained by surface plasmon resonance-induced transfer of hot electrons from gold nanoparticles to the conduction band of titania. Using the proposed catalyst, 4-nitrophenol could be converted to 4-aminophenol in an aqueous solution within 0.5 min. The 4-nitrophenol reduction rates were 2.5-79.3 times higher than those obtained with similar plasmonic catalysts. The selection of micron-size, magnetic, and porous titania microspheres as a support material for the immobilization of small-sized gold nanoparticles provided a recoverable plasmonic catalyst with high reduction ability.

关键词： small-sized gold nanoparticles magnetic titania microspheres sol-gel template synthesis plasmonic catalysis 4-nitrophenol

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Evolution of Coulomb failure stress in Sulaiman Lobe,Pakistan,and its implications for seismic hazard assessment

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Earth and Planetary Physics 2023年第2期7卷 282-294页

作者： Aiza Amjad Muhammad Shahid Riaz Urooj Shakir Muhammad Younis Khan Muhammad ali Shah Bahria School of Engineering and Applied Sciences H-11 CampusBahriaBahria UniversityIslamabadPakistan Centre for Earthquake Studies National Centre for PhysicsIslamabadPakistan National Centre of Excellence in Geology University of PeshawarPeshawarPakistan GIS and Space Applications in Geosciences(G-sag)Lab National Center of GIS and Space Applications(NCGSA)IslamabadPakistan

In this research work,we present the evolution of Coulomb failure stress(CFS)in the Sulaiman Lobe and its implications for seismic hazard *** Chaman transform fault,~1,000 km long,is the major active fault that marks the western boundary between Pakistan and Afghanistan on the Indian *** date,few studies have been conducted to unveil the interactions among earthquakes and the implications of these interactions for seismic hazard assessment in the *** thoroughly investigated the published and online catalog to construct a sequence of major earthquakes that occurred in this region during the *** final earthquake sequence was composed of 15 earthquakes of M_(w)≥6.0,beginning with the 1888 *** used the stress-triggering theory to numerically simulate the evolution of CFS caused by these *** numerical results revealed that 8 out of 15earthquakes were triggered by the preceding *** earthquakes in 1908,1910,1935,1966,and 1997 were rather independent earthquakes in this *** the epicenters of the 1975a and 1975b earthquakes were in the stress shadow zone,the partial rupture segments of both these earthquakes were in high-CFS *** CFS induced by the 1935 earthquake was notable,as it later triggered the 2008 ***,our results revealed that the northern segment of the Chaman Fault,the southern segment of the Ghazaband Fault,and the northwestern segment of the Urghargai Fault demonstrated a high change in CFS that could trigger seismicity in these *** necessary arrangements must therefore be made to mitigate any possible seismic hazards in the region.

关键词： Sulaiman Thrust Sulaiman Lobe earthquake triggering Coulomb failure stress seismic hazard assessment

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Impacts of Induction Motor Load on Voltage sag Characterization

Impacts of Induction Motor Load on Voltage Sag Characterizat...

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作者： Galal ali Mohsen al-Muthanna（加莫森）东南大学

学位级别：硕士

Due to the fast development in electrical devices,which depend on converting AC power system from the grid to DC,those devices become more sensitive to power quality problems and they affected easily by small disturbances in the *** addition,people definition of power quality has changed through last *** do not just want electrical supply to be reliable,they also need their power supply to be highly compatible with their devices and do not cause any shut down to the *** most common power system disturbance is voltage sag(dip).Because industrial loads are the most common and sensitive load in power system,therefore their impacts of power system disturbance are simulated and *** thesis is a research work on impacts of induction motor load on voltage sag characterization caused by faults.A model was chosen to be simulated through DigSilent PowerFactory software and the output data was analyzed using Mathworks MatLab.A fault event happened with the induction motor plant is in its area of *** system was used to study the impacts in two ***,study the impacts of induction motor existence on voltage sag characterization and impact of voltage sag on induction motor slip,induced torque and power ***,study the impact of the quantity of induction motor load on voltage sag *** industrial system was simulated and assumed to have identical 7 production *** is also assumed that every line has the same mechanical ***,the number of production lines in the time of voltage sag was increased from 0 to *** every load number the voltage sag was simulated and it characterization was *** results of this simulation indicate that that duration and depth of voltage sag are severely increased by the existence of voltage *** the other hand,phase-shift and frequency are slightly affected by the voltage *** motor side,slip becomes higher after transient which means that the motor is operati

关键词： Power quality Voltage sag Induction motor sag characterization

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Intelligent Islanding Detection of Multi-distributed Generation Using Artificial Neural Network Based on Intrinsic Mode Function Feature

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Journal of Modern Power Systems and Clean Energy 2020年第3期8卷 511-520页

作者： Samuel Admasie Syed Basit ali Bukhari Teke Gush Raza Haider Chul Hwan Kim Department of Electrical and Computer Engineering Sungkyunkwan UniversitySuwonSouth Korea U.S.-Pakistan Center for Advanced Studies in Energy(USPCAS-E) National University of Sciences and Technology(NUST)H-12 IslamabadPakistan Department of Electrical Engineering Balochistan University of Engineering and TechnologyKhuzdar 89100Pakistan

The integration of distributed energy resources(DERs) into distribution networks is becoming increasingly important, as it supports the continued adoption of renewable power generation, combined heat and power plants, and storage systems. Nevertheless, inadvertent islanding operation is one of the major protection issues in distribution networks connected to DERs. This study proposes an intelligent islanding detection method(IIDM) using an intrinsic mode function(IMF)feature-based grey wolf optimized artificial neural network(GWO-ANN). In the proposed IIDM, the modal voltage signal is pre-processed by variational mode decomposition followed by Hilbert transform on each IMF to derive highly involved features. Then, the energy and standard deviation of IMFs are employed to train/test the GWO-ANN model for identifying the islanding operations from other non-islanding events. To evaluate the performance of the proposed IIDM, various islanding and non-islanding conditions such as faults, voltage sag, linear and nonlinear load and switching, are considered as the training and testing datasets. Moreover, the proposed IIDM is evaluated under noise conditions for the measured voltage signal. The simulation results demonstrate that the proposed IIDM is capable of differentiating between islanding and non-islanding events without any sensitivity under noise conditions in the test signal.

关键词： Distributed energy resource(DER) intrinsic mode function(IMF) grey wolf optimized artificial neural network(GWO-ANN) intelligent islanding detection method(IIDM) microgrid

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硫化铜矿sag(半自磨)磨矿废品浮选药剂的交互作用

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Transactions of Nonferrous Metals Society of China 2021年第3期31卷 792-806页

作者： ali AHMADI Mojtaba REZAEI Seyed Mohammad SADEGHIEH Department of Mining Engineering Isfahan University of TechnologyIsfahan 84156-83111Iran

浮选药剂在黏土矿中基础矿物的选矿中表现出复杂的行为。利用中心组合设计法研究浮选药剂对低品位高黏质硫化物矿中铜浮选效率的交互作用。初步结果表明,在石灰作pH调节剂的情况下,异丙基黄原酸钠(SIPX)和O-异丙基-N-乙基硫基氨基甲酸酯... 详细信息

浮选药剂在黏土矿中基础矿物的选矿中表现出复杂的行为。利用中心组合设计法研究浮选药剂对低品位高黏质硫化物矿中铜浮选效率的交互作用。初步结果表明,在石灰作pH调节剂的情况下,异丙基黄原酸钠(SIPX)和O-异丙基-N-乙基硫基氨基甲酸酯(IPETC)是最有效的捕收剂。在不同的pH值下,评估捕收剂(SIPX和IPETC)用量和起泡剂甲基异丁基甲醇(MIBC)用量对分离效率的影响。基于方差分析(ANOVA)结果,对于分离效率而言,捕收剂用量与pH值以及捕收剂用量与起泡剂用量之间的交互作用显著。在低捕收剂用量时,pH值从9提高到11可使IPETC的铜分离效率从81%提高到86%,SIPX的铜分离效率从77%提高到86%。方差分析结果表明,在pH值11、8.6 g/t SIPX、7 g/t IPETC和20 g/t MIBC的条件下,铜分离效率最高(88.7%)。最终,可得出结论,捕收剂SIPX和IPETC更适合于处理高黏质硫化矿。

关键词：浮选硫化铜试剂交互作用废矿

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东濮凹陷柳屯环洼深层油气藏成藏条件分析

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天然气工业 2004年第6期24卷 15-17页

作者：王子洪苏惠曾探马阿丽中国石化中原油田分公司东方地球物理公司东部勘探事业部华北石油物探公司

柳屯洼陷是东濮凹陷的第二大生油洼陷 ,洼陷的西侧、东侧分别是西部断阶带和中央隆起带主力油气区。 2 0 0 0年以来 ,H96等 4口探井均获得突破 ,发现了H96断块区沙三段高温高压凝析油气藏。该区油气藏与东濮凹陷主体常温常压油气区相比 ... 详细信息

柳屯洼陷是东濮凹陷的第二大生油洼陷 ,洼陷的西侧、东侧分别是西部断阶带和中央隆起带主力油气区。 2 0 0 0年以来 ,H96等 4口探井均获得突破 ,发现了H96断块区沙三段高温高压凝析油气藏。该区油气藏与东濮凹陷主体常温常压油气区相比 ,是一套相对独立的高温高压成藏封闭体系 ,油气藏特点为 :高温、高压、低密度、低粘度 ,明显不同于相邻的断阶带和隆起带。该油气藏纵向发育的沙三2 盐岩和侧向发育的沙三4 盐岩与断裂的有机配合组成该区沙三段高压封闭系统。异常高压形成期、异常高孔隙发育期和烃源岩油气生成期三者有机配合 ,是该区形成高温高压油气富集区的重要条件。

关键词：东濮凹陷油气藏成藏条件柳屯洼陷异常孔隙压力油气勘探

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