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An improved coupled flow-geomechanical model for cyclic steam stimulation

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Petroleum Exploration and Development 2023年第5期50卷 1206-1214页

作者： YADALI JAMALOEI benyamin Murphy Oil Corporation Calgary T2N 1N4Canada

Considering the pore deformation and permeability changes during dilation-recompaction in cyclic steam stimulation(CSS),an existing geomechanical model is improved and thermo-mechanically coupled with the flow equations to form a coupled flow-geomechanical *** impacts of dilation-recompaction parameters can be quantified through sensitivity analysis and uncertainty assessment utilizing the synergy between Latin hypercube designs and response surface *** improved coupled flow-geomechanical model allows a more reasonable history-matching of steam injection pressure and volume and oil/water production *** both the linear and quadratic models,the rise in recompaction pressure has the most significant effect on the rise in the volumes of steam injection and water production,both rock compressibility and recompaction pressure are positively correlated with steam injectivity and oil/water production,and the dilation pressure is negatively correlated with steam injectivity and oil/water *** the linear model,dilation pressure has the most significant negative impact on the cumulative oil production,and compressibility and recompaction pressure are positively correlated with oil *** the quadratic model,the rise in recompaction pressure has the most significant effect on the rise in the cumulative volumes of oil/water production and steam *** interactions between the dilation/recompaction pressures and spongy-rock compressibility negatively affect the cumulative volumes of oil/water production and steam injection.

关键词： heavy oil production cyclic steam stimulation flow-geomechanical model spongy-rock approach dilation-recompaction history matching

An Improved Farmland Fertility Algorithm with Hyper-Heuristic Approach for Solving Travelling Salesman Problem

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Computer Modeling in Engineering & Sciences 2023年第6期135卷 1981-2006页

作者： Farhad Soleimanian Gharehchopogh benyamin Abdollahzadeh Bahman Arasteh Department of Computer Engineering Urmia BranchIslamic Azad UniversityUrmiaIran Department of Software Engineering Faculty of Engineering and Natural ScienceIstinye UniversityIstanbulTurkey

Travelling Salesman Problem(TSP)is a discrete hybrid optimization problem considered *** aims to discover the shortest Hamilton route that visits each city precisely once and then returns to the starting point,making it the shortest route *** paper employed a Farmland Fertility Algorithm(FFA)inspired by agricultural land fertility and a hyper-heuristic technique based on the Modified Choice Function(MCF).The neighborhood search operator can use this strategy to automatically select the best heuristic method formaking the best ***-Kernighan(LK)local search has been incorporated to increase the efficiency and performance of this suggested approach.71 TSPLIB datasets have been compared with different algorithms to prove the proposed algorithm’s performance and *** results indicated that the proposed algorithm outperforms comparable methods of average mean computation time,average percentage deviation(PDav),and tour length.

关键词： Travelling salesman problem optimization farmland fertility optimization algorithm Lin-Kernighan

Integral sliding-mode robust observer-based congestion control for wireless access networks

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Journal of Control and Decision 2022年第2期9卷 152-164页

作者： Ladan khoshnevisan Farzad R.Salmasia Xinzhi Liub School of Electrical and Computer Engineering College of EngineeringUniversity of TehranTehranIran bDepartment of Applied Mathematics Faculty of MathematisUniversity of WaterlooWaterlooCanada

Designing a robust active queue management(RAQM)is mandatory to avoid congestion in networks with wireless access links,because transmission control protocol(TCP)can detect con-gestion after its occurrence in a communication network and wireless links suffer from bottleneck capacity variations caused by fading and packet error rate(PER)in the acknowledgement ***,the average window size cannot be measured explicitly from the output signal and input and state delay are imposed to a network,which complicate theRAQMdesign problem in nonlinear ***,the main contribution of this study is to design a robust observer based control procedure based on integral sliding mode protocol to estimate the average window size,to control congestion in a TCP/RAQM network and to compensate input and state ***-ulation results via professional simulator NS-2 and SIMULINK confirm that the procedure can effectively estimate the window size and can robustly avoid congestion.

关键词： Congestion control integral sliding mode robust active queue management(RAQM) robust observer-based control(ROBC) transmission control protocol(TCP) wireless access network

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改进的蒸汽吞吐渗流-地质力学耦合模型

石油勘探与开发 2023年第5期50卷 1049-1055页

作者： JAMALOEI benyamin Yadali 墨菲石油公司卡尔加里T2N 1N4加拿大

综合考虑蒸汽吞吐过程中地层膨胀和再压实诱发的孔隙变形和渗透率变化,改进了现有地质力学模型并与渗流方程进行热力学耦合,形成渗流-地质力学耦合模型,将耦合模型与响应面法和拉丁超立方体设计相结合,进行敏感性分析和不确定性评价,量... 详细信息

综合考虑蒸汽吞吐过程中地层膨胀和再压实诱发的孔隙变形和渗透率变化,改进了现有地质力学模型并与渗流方程进行热力学耦合,形成渗流-地质力学耦合模型,将耦合模型与响应面法和拉丁超立方体设计相结合,进行敏感性分析和不确定性评价,量化地层膨胀-再压实参数对蒸汽吞吐效果的影响。研究表明,改进的渗流-地质力学耦合模型可以更准确地实现注汽压力、注汽量及油水产量的历史拟合;线性模型和二次模型中,再压实压力的升高对注汽量和产水量的增加影响最明显,压缩系数、再压实压力与注汽量和油水产量正相关,膨胀压力与注汽量和油水产量负相关;线性模型中,膨胀压力对累计产油量的影响最明显且负相关,压缩系数、再压实压力与产油量正相关;二次模型中,再压实压力对累计油水产量和注汽量影响最明显且正相关;膨胀压力、再压实压力与海绵状岩石压缩系数之间的交互作用对累计油水产量和累计注汽量均具有负面影响。

关键词：稠油开发蒸汽吞吐渗流-地质力学模型海绵状岩石法膨胀-再压实历史拟合

CQFFA:A Chaotic Quasi-oppositional Farmland Fertility Algorithm for Solving Engineering Optimization Problems

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Journal of Bionic Engineering 2023年第1期20卷 158-183页

作者： Farhad Soleimanian Gharehchopogh Mohammad H.Nadimi-Shahraki Saeid Barshandeh benyamin Abdollahzadeh Hoda Zamani Department of Computer Engineering Urmia BranchIslamic Azad UniversityUrmia969Iran Faculty of Computer Engineering Najafabad BranchIslamic Azad UniversityNajafabad517Iran Big Data Research Center Najafabad BranchIslamic Azad UniversityNajafabad517Iran Afagh Higher Education Institute Urmia969Iran

Farmland Fertility Algorithm(FFA)is a recent nature-inspired metaheuristic algorithm for solving optimization ***,FFA has some drawbacks:slow convergence and imbalance of diversification(exploration)and intensification(exploitation).An adaptive mechanism in every algorithm can achieve a proper balance between exploration and *** literature shows that chaotic maps are incorporated into metaheuristic algorithms to eliminate these ***,in this paper,twelve chaotic maps have been embedded into FFA to find the best numbers of prospectors to increase the exploitation of the best promising ***,the Quasi-Oppositional-Based Learning(QOBL)mechanism enhances the exploration speed and convergence rate;we name a CQFFA *** improvements have been made in line with the weaknesses of the FFA algorithm because the FFA algorithm has fallen into the optimal local trap in solving some complex problems or does not have sufficient ability in the intensification *** results obtained show that the proposed CQFFA model has been significantly *** is applied to twenty-three widely-used test functions and compared with similar state-of-the-art algorithms statistically and ***,the CQFFA algorithm has evaluated six real-world engineering *** experimental results showed that the CQFFA algorithm outperforms other competitor algorithms.

关键词： Nature-inspired algorithm Farmland fertility algorithm Chaotic maps Quasi Engineering optimization problems

特厚煤层短壁综放大断面切眼巷道围岩控制研究

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煤炭与化工 2024年第2期47卷 14-19页

作者：王志根汪国安本亚敏·哈里克山阴金海洋南阳坡煤矿山西朔州036000 中国矿业大学(北京)能源与矿业学院北京100083

以山阴金海洋南阳坡煤矿特厚煤层短壁综放工作面为研究对象,针对跨度达8.7 m的综放大断面切眼支护设计,既要满足有效控制切眼巷道围岩变形,又要尽可能减少支护材料浪费和支护成本偏高的问题,利用数值模拟软件FLAC3D研究了不同支护方案... 详细信息

以山阴金海洋南阳坡煤矿特厚煤层短壁综放工作面为研究对象,针对跨度达8.7 m的综放大断面切眼支护设计,既要满足有效控制切眼巷道围岩变形,又要尽可能减少支护材料浪费和支护成本偏高的问题,利用数值模拟软件FLAC3D研究了不同支护方案下顶板预应力场分布特征,确定了大跨度切眼的支护形式为锚杆、金属菱形网、锚索+W钢带以及单体支柱等的联合支护形式,通过校核支护参数,支护设计均能够满足要求,最后对围岩变形量进行了现场观测,浅部、深部基点离层值分别为9 mm、12 mm,巷道顶板下沉量约为140 mm,煤壁侧巷道变形量约为105 mm,老塘侧巷道变形量约为98 mm,围岩变形量小,说明大断面切眼巷道得到了有效控制,能够满足安全生产使用要求,为其他类似工程条件的大断面切眼支护问题提供了借鉴。

关键词：大断面切眼数值模拟理论计算顶板控制现场实测

Fe^(3+)-Doped Anatase TiO_2 Study Prepared by New Sol-Gel Precursors

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Chinese Physics Letters 2018年第2期35卷 102-106页

作者： Bahram khoshnevisan Mohammad Bagher Marami Majid Farahmandjou Department of Physics Faculty of ScienceUniversity of Kashan Departments of Physics Varamin Pishva BranchIslamis Azad University

FeTi_1-O_2（= 0.00,0.05,0.10） nanocomposites are synthesized using a sol-gel method involving an ethanol solvent in the presence of ethylene glycol as the stabilizer,and acetic acid as the chemical *** structural and optical analyses are studied to reveal their physicochemical *** the x-ray diffractometer（XRD）analysis,the size of the nanoparticles（NPs） is found to be 18-32 nm,where the size of the NPs decreases down to 18 nm when Fe impurity of up to 10% is added,whereas their structure remains *** results also indicate that the structure of the NPs is tetragonal in the anatase *** Fourier transform infrared spectroscopy analysis suggests the presence of a vibration bond（Ti-O） in the *** photoluminescence analysis indicates that the diffusion of Fe^（3＋） ions into the TiO_2 matrix results in a decreasing electron-hole recombination,and increases the photocatalytic properties,where the best efficiency appears at an impurity of10%.The UV-diffuse reflection spectroscopy analysis indicates that with the elevation of iron impurity,the band gap value decreases from 3.47 eV for the pure sample to 2.95 eV for the 10 mol% Fe-doped TiO_2 NPs.

关键词： Fe Doped Anatase TiO2 Study Prepared by New Sol-Gel Precursors TiO

Correlations between various rock mass classification/characterization systems for the Zagros tunnel-W Iran

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Journal of Mountain Science 2020年第7期17卷 1790-1806页

作者： Shahriar SADEGHI Ebrahim SHARIFI TESHNIZI benyamin GHOREISHI Department of Geology Faculty of scienceImam Khomeini International UniversityQazvin34149-16818Iran Engineering Geology Young Researchers and Elite ClubShahrekord BranchIslamic Azad UniversityShahrekord15655-461Iran

This study deals with the comparative investigation on various classification/characterization systems for sedimentary rocks in two parts,40 kmlong of the Zagros tunnel,west of *** results of extensive geotechnical explorations and field measurements were applied to obtain the rock mass classification/characterization systems such as Rock Mass Rating(RMR),Rock Condition Rating(RCR),Q-system(Q),Rock Mass Number(QN),Rock Mass index(RMi),Rock Structure Rating(RSR),and Geological Strength Index(GSI)for a wide range of sedimentary rocks.A set of systems inter-relationship is *** of these correlation relations such as RMR-Q,RMR-RMi,RMi-Q,RCR,GSI-GSI(Cai)are similar to the one or more relations proposed in the previous studies,however,some of them such as RSR-RMR,RSR-Q,RCR-QN and GSI-RMR are not similar to the previous *** set orientation and joint set number are more important parameters that cause weak correlation coefficients where both side classifications are not similar in considering them in calculating *** it is proposed to find relations between any pairs of systems that both of them consider or not consider these *** relations are proposed for a wide range of sedimentary rocks and can be applied for similar geological environments.

关键词： Rock mass dassification/characterization systems Zagros Tunnel Sedimentaiy rocks

Direct extraction of Mo(Ⅵ) from sulfate solution by synergistic extractants in the rotation column

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Chinese Journal of Chemical Engineering 2020年第2期28卷 445-455页

作者： benyamin Shakib Meisam Torab-Mostaedi Mohammad Outokesh Mehdi Asadollahzadeh Department of Energy Engineering Sharif University of TechnologyP.O.Box 11365-8639TehranIran Materials and Nuclear Fuel Research School Nuclear Science and Technology Research InstituteP.O.Box:11365-8486TehranIran

Direct extraction of molybdenum from sulfate solution with synergistic extractants(mixture of D2EHPA and TBP)was studied in the rotation *** influence of extractant concentration and initial pH of aqueous phase was studied in the bench scale *** outcomes demonstrated that the synergistic solvent extraction enhances the constancy of the extracted complexes for transfer into the organic *** the continuous experiments,the effect of different operating parameters such as speed of agitation,inlet solvent flow rate and inlet aqueous flow rate on the holdup,mean drop size,drop size distribution,slip and characteristic velocities and extraction percentage were *** correlations were proposed for prediction of hydrodynamic parameters with consideration of reaction extraction condition in the rotation ***,these correlations were compared with the experimental *** to the results,the direct extraction of Mo(Ⅵ)from aqueous solution and sulfuric media with extraction efficiency of 90.4%was obtained at higher rotor speed(240 r·min–1 rpm)in this column.

关键词： Direct extraction Molybdenum Rotation column Synergistic Extractant