Arabian Journal for Science and Engineering最新文献_第9页

Safety, Security, and Design Consideration of Nuclear Power Plants in the Kingdom of Saudi Arabia 沙特阿拉伯王国核电厂的安全、保障和设计考虑

IF 2.6 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-10-08 DOI: 10.1007/s13369-024-09622-1

Osama Alsafi, Abdulwahab Alhamdi, Abdulaziz Alsanea, Mohammed Alsultan, Salman Alzahrani, Afaque Shams, Khaled Al-Athel, Osman Siddiqui

{"title":"Safety, Security, and Design Consideration of Nuclear Power Plants in the Kingdom of Saudi Arabia","authors":"Osama Alsafi, Abdulwahab Alhamdi, Abdulaziz Alsanea, Mohammed Alsultan, Salman Alzahrani, Afaque Shams, Khaled Al-Athel, Osman Siddiqui","doi":"10.1007/s13369-024-09622-1","DOIUrl":"10.1007/s13369-024-09622-1","url":null,"abstract":"<div><p>Nuclear energy became one of the major contributors to the worldwide energy mix, with a total share of around 10% from thirty-three countries operating nuclear power reactors. Owing to the development of safe and advanced nuclear power plant technologies, many countries are planning to embark on considering nuclear energy. Moreover, it provides reliable and low-carbon power, which is well suited to address certain environmental challenges, such as those stated by the International Treaty on Climate Change signed in Paris in 2015. The agreement resembles international cooperation toward carbon neutrality. Kingdom of Saudi Arabia (KSA) is one of the signatories of the Paris Treaty and is committed to reaching carbon neutrality by 2060. Furthermore, the Kingdom has launched its peaceful nuclear energy program to diversify the country’s energy mix, reduce greenhouse gas emissions, and meet the increasing electricity demand. However, considering the region’s environmental conditions and other security concerns, several challenges are imposed on the Kingdom’s first-ever Nuclear Power Plant (NPP). Hence, this article attempts to address potential challenges that might face NPPs in the Kingdom and provide lessons learned from past experiences in NPP operations.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 5","pages":"3505 - 3518"},"PeriodicalIF":2.6,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling of Textured Hydrostatic Thrust Bearings and Lubricating Films with Variable Thickness 变形静压止推轴承及变厚度润滑膜的建模

IF 2.6 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-10-07 DOI: 10.1007/s13369-024-09645-8

Hicham Aboshighiba, Aboubakeur Benariba, Mohamed Rida Sbaa, Makhfi Souad, Lamsadfa Sidamar, Rami Khalid Suleiman, Ahmed Abu-Rayyan, Mohammed Hadj Meliani

{"title":"Modeling of Textured Hydrostatic Thrust Bearings and Lubricating Films with Variable Thickness","authors":"Hicham Aboshighiba, Aboubakeur Benariba, Mohamed Rida Sbaa, Makhfi Souad, Lamsadfa Sidamar, Rami Khalid Suleiman, Ahmed Abu-Rayyan, Mohammed Hadj Meliani","doi":"10.1007/s13369-024-09645-8","DOIUrl":"10.1007/s13369-024-09645-8","url":null,"abstract":"<div><p>In tribology, understanding the fluid flow characteristics of thin films is crucial. Although theoretical models often assume perfectly smooth surfaces, real-world scenarios involve surface irregularities and design features that affect film thickness. This study presents a systematic approach to accelerate modeling fluid flow in thin films within hydrostatic thrust bearings, for both the classical Reynolds equation and a comprehensive 3D methodology based on the Navier–Stokes equations. The classical model, nonlinear due to film thickness variation, is solved using the finite difference method, while the 3D approach is implemented in Ansys-CFX using the finite volume method. Comparative analysis of results from these models against the analytic solution for infinitely long geometries validates the modeling strategy. The 3D Navier–Stokes model is optimized by omitting parts of the geometry with unchanging pressure, replaced by a Python program to conserve mass flow rate, reducing mesh size to less than 0.5% of the original. This optimization significantly decreases computational resources, facilitating the study of various geometric configurations. The generated pressure field, bearing load, and equivalent stiffness were compared across models (Convergent, divergent and periodic). While the convergent configuration demonstrates the most a noteworthy enhancement, the periodic ones need deeper investigation. Future work will explore also the potential for dynamically modifiable bearings to enhance vibration control.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 4","pages":"2911 - 2923"},"PeriodicalIF":2.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of the Effect of Particle Size on Dispersion Stability and Viscosity in Kaolin Particles-Doped Bio-Based Palm Nanolubricants 粒径对高岭土颗粒掺杂生物基棕榈纳米润滑剂分散稳定性和粘度影响的研究

IF 2.6 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-10-07 DOI: 10.1007/s13369-024-09664-5

Batuhan Özakın, Kürşat Gültekin, Gediz Uğuz

{"title":"Investigation of the Effect of Particle Size on Dispersion Stability and Viscosity in Kaolin Particles-Doped Bio-Based Palm Nanolubricants","authors":"Batuhan Özakın, Kürşat Gültekin, Gediz Uğuz","doi":"10.1007/s13369-024-09664-5","DOIUrl":"10.1007/s13369-024-09664-5","url":null,"abstract":"<div><p>The addition of various nano- and micro-sized particles into lubricants leads to improvements in the tribological and thermal properties of the produced nanolubricants. However, dispersion stability is essential in the preparation of nanolubricants. Ensuring dispersion stability contributes to the stability of various properties of the lubricant, such as viscosity, wear, and thermal stability. In this study, kaolin nanoparticles were ground using an axial mill to obtain three different (950 nm, 650 nm, and 350 nm) particle sizes. It was subjected to oleic acid modification to improve kaolin nanoparticle dispersion in the lubricant. Oleic acid-modified nanoparticles were doped to palm oil at rates of 0.125%, 0.25%, 0.5%, 0.75%, 1.0%, 1.25% and 1.5% by weight. The dispersion stability of the nanolubricants was determined using sedimentation and ultraviolet–visible spectroscopy tests, and their viscosities were determined using a rotational rheometer. It has been determined that kaolin-palm oil-based nanolubricants maintain dispersion stability for 14 days. It has been observed that lubricants have good dispersion stability up to 0.75 wt% nanoparticle concentration and decrease above this rate. It was concluded that nanoparticles with small particle sizes exhibited better dispersion stability than large particles. It was concluded that the increase in nanoparticle size reduces the viscosity of lubricants. Moreover, the viscosity value of the kaolin nanoparticle-doped lubricant with a size of 950 nm at the 1.5% doping rate was determined as 69.7 mPa s, while for the 650 and 350 nm particle sizes, these values were determined as 70.93 and 72.04 mPa s.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 6","pages":"4223 - 4241"},"PeriodicalIF":2.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Emergence of an Improved Version of the PSO Technique for Optimization of Damped Input Filter for Direct Matrix Converter 直接矩阵变换器阻尼输入滤波器优化改进粒子群算法的提出

IF 2.6 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-10-06 DOI: 10.1007/s13369-024-09594-2

Abdelhakim Dendouga

{"title":"Emergence of an Improved Version of the PSO Technique for Optimization of Damped Input Filter for Direct Matrix Converter","authors":"Abdelhakim Dendouga","doi":"10.1007/s13369-024-09594-2","DOIUrl":"10.1007/s13369-024-09594-2","url":null,"abstract":"<div><p>The recent advances in the technology of semiconductor devices, electronic boards, and micro-computing have contributed to the emergence of new generations of power converters. In this context, the direct matrix converter (DMC) has been proposed as a promising solution to improve the performance of drive and power generation systems since this latter allows a direct conversion, adjustable power factor, and compact dimensions. However, harmonic filtering is a severe problem for this type of converter concerning choosing the appropriate filter topology and identifying its optimal parameters. The present work proposes a new approach for the optimal design of the passive input filter associated with the DMC through the emergence of an improved version of the particle swarm optimization (PSO) algorithm. In this context, a simulation study was carried out to evaluate the effectiveness of the proposed optimization method by considering two topologies of the damped passive input filter for the DMC controlled by the Venturini and SVM techniques. The obtained results confirm the effectiveness of the proposed optimization method compared to traditional methods, especially regarding the short execution time and optimal filter design (compliant with IEEE standards THD < 5%), avoiding calculation errors caused by humans.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 8","pages":"5783 - 5794"},"PeriodicalIF":2.6,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical Evaluation of Multi-well Cyclic Gas Injection Technique for Enhanced Oil Recovery in Composite Tight Oil Reservoirs 复合致密油油藏多井循环注气提高采收率数值评价

IF 2.6 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-10-05 DOI: 10.1007/s13369-024-09603-4

Kingsley Asare, Chinedu Ejike, Chinedu J. Okere

{"title":"Numerical Evaluation of Multi-well Cyclic Gas Injection Technique for Enhanced Oil Recovery in Composite Tight Oil Reservoirs","authors":"Kingsley Asare, Chinedu Ejike, Chinedu J. Okere","doi":"10.1007/s13369-024-09603-4","DOIUrl":"10.1007/s13369-024-09603-4","url":null,"abstract":"<div><p>Tight oil reservoirs are a crucial source for achieving energy security, but their economic development is hampered by rapid production rate declines and low initial recovery. This study utilizes numerical analysis to explore the viability of the multi-well cyclic technique (cyclic injection with cyclic production) in addressing these challenges, aiming to ensure sustained production rates and enhanced recovery. Using compositional modeling, the recovery performance of the multi-well cyclic technique is investigated and compared with other enhanced oil recovery (EOR) techniques including gas flooding and cyclic injection with varying production schemes, in a tight reservoir setting. The simulation results emphasize the efficacy of the multi-well cyclic technique in sustaining production rate and improving oil recovery over other techniques. Further sensitivity analysis explores the influence of key parameters such as gas injection rate, production bottomhole pressure, and matrix permeability on oil recovery. Findings reveal that optimal parameters for efficient oil recovery using the multi-well cyclic technique involve a gas injection rate of 4000 m<sup>3</sup>/d, a production bottomhole pressure of 8 MPa, and low matrix permeability. The evaluation of various EOR methods demonstrated that the Cyclic-Cyclic injection mode significantly outperforms both gas flooding and other cyclic injection techniques. This method not only sustains a higher production rate over time but also achieves superior overall oil recovery, highlighting its effectiveness in maximizing reservoir performance. The results suggest that the Cyclic-Cyclic approach offers a more efficient and reliable strategy for optimizing oil extraction compared to traditional methods. This study provides valuable insights into enhancing oil recovery in tight oil reservoirs, offering a foundation for future studies and field applications.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 7","pages":"5037 - 5054"},"PeriodicalIF":2.6,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Study on Xenon Estimation During Load-Follow Operation Using Sliding Mode Observer in APR1400 for A Predictive Soluble Boron Control 基于滑模观测器的APR1400可溶硼预测控制负载跟踪过程中氙估计研究

IF 2.6 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-10-05 DOI: 10.1007/s13369-024-09620-3

Husam Khalefih, Yonghee Kim

{"title":"A Study on Xenon Estimation During Load-Follow Operation Using Sliding Mode Observer in APR1400 for A Predictive Soluble Boron Control","authors":"Husam Khalefih, Yonghee Kim","doi":"10.1007/s13369-024-09620-3","DOIUrl":"10.1007/s13369-024-09620-3","url":null,"abstract":"<div><p>During daily load-follow operations (DLFOs) in nuclear reactors, xenon concentration varies with power level, necessitating adjustments to the soluble boron concentration via dilution or boration. Since xenon cannot be directly measured within the reactor, this study introduces the use of a sliding mode observer (SMO) to estimate xenon concentration on the fly during the DLFO. Based on these estimates, the necessary boron concentration adjustments are calculated using a control algorithm (Mode-K +) that integrates data on the reactor’s chemical control system, xenon, and boron worth. This study focuses on the APR1400 reactor’s initial cycle and demonstrates a high degree of accuracy between the estimated xenon concentrations and reference values derived from KANT’s in-house 3D time-dependent xenon model. The integration of the SMO with the load-follow operation control algorithm represents a significant advancement by providing reactor operators with precise boron adjustment information. This precision minimizes unnecessary control rod movements, thereby reducing the risk of axial or radial power peaking, a critical factor for maintaining reactor stability and safety. Additionally, this approach optimizes the boron dilution process by accurately timing and controlling the volume of demineralized water introduced into the system. This not only ensures the effective execution of load-follow operations but also significantly reduces the volume of liquid radioactive waste produced. The analysis was conducted using a two-step procedure: cross-sectional evaluation via the Serpent 2.2.0 continuous energy Monte Carlo code, followed by whole-core calculations to generate lumped parameters using KANT. This methodology offers a robust and novel solution for enhancing the safety and efficiency of nuclear reactor operations during load-follow scenarios.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 5","pages":"3491 - 3503"},"PeriodicalIF":2.6,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13369-024-09620-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Role of Wax Inhibitors for Flow Assurance Below WAT in Long Tiebacks 蜡抑制剂在长回油管WAT以下流动保障中的作用

IF 2.6 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-10-04 DOI: 10.1007/s13369-024-09600-7

Denise G. Nunes, Giovani C. Nunes, Elizabeth R. Lachter, Agatha O. Santos, Bruna F. Alves, Elizabete F. Lucas

{"title":"The Role of Wax Inhibitors for Flow Assurance Below WAT in Long Tiebacks","authors":"Denise G. Nunes, Giovani C. Nunes, Elizabeth R. Lachter, Agatha O. Santos, Bruna F. Alves, Elizabete F. Lucas","doi":"10.1007/s13369-024-09600-7","DOIUrl":"10.1007/s13369-024-09600-7","url":null,"abstract":"<div><p>The low temperature of the seabed can lead to wax precipitation of the oil in offshore production, clogging the flowlines, particularly in long tieback systems. To prevent this, production systems are designed to keep the oil always above the WAT throughout its trajectory, which limits the length of the flow lines. An oil from a small field located 60 km from a FPSO vessel, where the seabed temperature is 12 °C, was investigated. The WAT and gelation temperature (GT) of the oil were ~ 17 and ~ 9 °C by microcalorimetry and rheology, respectively. The net present value is US$ 589 million for an insulated pipeline and US$ 689 million if no insulation is used. The latter case is economically more attractive, if the wax is removed with frequent pigging operations. However, for a similar oil in very deep waters where the seabed temperature is 5 °C, restarting oil flow is energy-intensive due to the yield stress at this temperature, necessitating inhibitors. Surfactant wax inhibitors, while not affecting GT, the yield stress temperature, and WAT, reduced the yield stress value by 70–90%, softening the gel. A commercial polymeric wax inhibitor lowered GT and WAT to approximately −21 and 10 °C, respectively, and eliminated yield stress. All inhibitors reduced oil viscosity by about 60% at 5 °C, facilitating wax removal with pigs.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 7","pages":"5021 - 5035"},"PeriodicalIF":2.6,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing Dielectric Properties of Gold Nanoparticles Attached to Acid-Treated Pristine Multiwalled Carbon Nanotubes-BaTiO3/PVDF Polymer Nanocomposites 酸处理原始多壁碳纳米管- batio3 /PVDF聚合物纳米复合材料上金纳米颗粒的介电性能增强

IF 2.6 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-10-01 DOI: 10.1007/s13369-024-09608-z

Kaniknun Sreejivungsa, Nutthakritta Phromviyo, Wirat Jarernboon, Kitirote Wantala, Prasit Thongbai

{"title":"Enhancing Dielectric Properties of Gold Nanoparticles Attached to Acid-Treated Pristine Multiwalled Carbon Nanotubes-BaTiO3/PVDF Polymer Nanocomposites","authors":"Kaniknun Sreejivungsa, Nutthakritta Phromviyo, Wirat Jarernboon, Kitirote Wantala, Prasit Thongbai","doi":"10.1007/s13369-024-09608-z","DOIUrl":"10.1007/s13369-024-09608-z","url":null,"abstract":"<div><p>Improving the properties of polymer matrix nanocomposites, such as increasing dielectric permittivity, reducing the loss tangent, and minimizing filler content, is essential for modern electronics applications. In this work, we successfully prepared gold nanoparticles (<i>n</i>Au) attached to acid-treated pristine multiwalled carbon nanotubes (<i>n</i>Au-ACNTs) combined with BaTiO<sub>3</sub>/poly(vinylidene fluoride) (<i>n</i>Au-ACNT- BT/PVDF) polymer nanocomposites with different loading volume fractions of <i>n</i>Au-ACNT (<i>f</i><sub><i>n</i>Au-ACNT</sub>) and a fixed BT content of 2 vol%. The ACNTs used had a particle size of approximately 6–9 nm in diameter and 5 μm in length, while the <i>n</i>Au attached to the surface of ACNTs had an average size of ~ 5 nm. The BT particles had a size of around 100 nm. The morphology, microstructure, crystal structures, phase composition, and dielectric properties of the polymer nanocomposites were investigated. Notably, the dielectric permittivity of the <i>n</i>Au-ACNT-BT/PVDF nanocomposite with <i>f</i><sub><i>n</i>Au-ACNT</sub> = 0.010 was as high as ~ 814.2 (at 25 °C and 1 kHz), which is ~ 75 times higher than that of pure PVDF polymer (ε′ = 10.8). Under these conditions, the dielectric loss tangent was maintained at a low value of tanδ ~ 0.478, whereas tanδ of the nanocomposite without <i>n</i>Au nanoparticles at the same total volume fraction was 122.95. The enhanced dielectric properties of the <i>n</i>Au-ACNT-BT/PVDF nanocomposite may be attributed to interfacial polarization and the inhibition of conductivity paths of ACNTs in the polymer matrix.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 9","pages":"6853 - 6863"},"PeriodicalIF":2.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Elastic–Electrical Analysis Method for Identifying Reservoirs and Lithology and its Application in the Northern Mexico Gulf Sedimentary Basin 北墨西哥湾沉积盆地储层岩性识别的弹电分析方法及其应用

IF 2.6 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-10-01 DOI: 10.1007/s13369-024-09405-8

Saeed Aftab, Rasoul Hamidzadeh Moghadam, Navid Shad Manaman

{"title":"An Elastic–Electrical Analysis Method for Identifying Reservoirs and Lithology and its Application in the Northern Mexico Gulf Sedimentary Basin","authors":"Saeed Aftab, Rasoul Hamidzadeh Moghadam, Navid Shad Manaman","doi":"10.1007/s13369-024-09405-8","DOIUrl":"10.1007/s13369-024-09405-8","url":null,"abstract":"<div><p>The elastic–electric properties of rocks play a crucial role in enhancing our understanding of subsurface rock properties and reservoir characteristics. The purpose of investigating the elastic–electric properties of subsurface rocks is to effectively identify reservoir units and separate sand from shales in geological structures. Acoustic impedance (AI) and the Vp/Vs ratio are crucial parameters in geophysics and reservoir characterization. These parameters are employed to distinguish between fluid and lithology types, and to detect the presence of sand reservoirs. These analyses elucidate the anticipated range of the Vp/Vs ratio for reservoir units and other formations within the study area. In this research, we propose two novel equations based on porosity–resistivity relationships, namely Poro-resistivity and Exp (porosity/resistivity) (EPR). These equations serve as equivalents to AI and the Vp/Vs ratio, respectively, and better define the subsurface rock properties in the absence of S-wave velocity data in wells. Poro-resistivity functions similarly to an AI equivalent and exhibits a strong correlation with density, Vp, and AI. However, Poro-resistivity is more sensitive to lithology variations. Our findings indicate that Poro-resistivity is an effective criterion for distinguishing shale from porous sand. We employed rock physics models to assess the performance of Poro-resistivity, and the results confirmed its effectiveness. Furthermore, we compared the scatter plot of AI and the Vp/Vs ratio, a well-established rock physics template for lithological and fluid analysis, with the scatter plot of AI and EPR. The results were strikingly similar, leading us to conclude that EPR is a suitable equivalent for the Vp/Vs ratio.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 9","pages":"6727 - 6744"},"PeriodicalIF":2.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of (beta )-Decay, log ft Values and Nuclear Structure Properties of Neutron-Rich Ge Nuclei 富中子锗核(beta ) -衰变、log ft值及核结构性质的研究

IF 2.6 4区综合性期刊

Arabian Journal for Science and Engineering Pub Date : 2024-10-01 DOI: 10.1007/s13369-024-09619-w

Jameel-Un Nabi, Wajeeha Khalid, Abdul Kabir, Syeda Anmol Rida

{"title":"Study of (beta )-Decay, log ft Values and Nuclear Structure Properties of Neutron-Rich Ge Nuclei","authors":"Jameel-Un Nabi, Wajeeha Khalid, Abdul Kabir, Syeda Anmol Rida","doi":"10.1007/s13369-024-09619-w","DOIUrl":"10.1007/s13369-024-09619-w","url":null,"abstract":"<div><p>We use the relativistic mean field (RMF) model to conduct a thorough analysis of the ground-state properties of <span>(^{67-80})</span>Ge nuclei. Binding energies and neutron skin thicknesses are computed for a total of 14 neutron-rich Ge isotopes. This study covers a comprehensive overview of the state of the art regarding the RMF model’s explanation of nuclear ground-state properties. Furthermore, we examine the log <i>ft</i> values of the allowed <span>(beta ^pm )</span> decays and electron/positron capture rates on Ge isotopes in the mass region <i>A</i> = 67–80. The proton-neutron quasiparticle random phase approximation (pn-QRPA) method was employed to calculate the <span>(beta )</span> decay properties of selected Ge isotopes. The calculated log <i>ft</i> values show good consistency with the measured data. The predicted <span>(beta )</span> decay half-lives are within a factor of 2 of the measured values. For high temperature and density values prevailing in the core of massive stars, the calculated pn-QRPA stellar rates are up to an order of magnitude bigger than the independent shell model rates. The findings reported in the current investigation could prove valuable for simulating the late-stage stellar evolution of massive stars.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"50 9","pages":"6865 - 6877"},"PeriodicalIF":2.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0