检索结果-内蒙古大学图书馆

Novel robust Elman neural network-based predictive models for bubble point oil formation volume factor and solution gas–oil ratio using experimental data

引用

Neural Computing and Applications 2024年第23期36卷 14503-14526页

作者： Kohzadvand, Kamyab Mahmoudi Kouhi, Maryam Ghasemi, Mehdi Shafiei, Ali Tehran Iran Petroleum Engineering Program School of Mining and Geosciences Nazarbayev University Astana010000 Kazakhstan

Bubble point oil formation volume factor (Bob) and solution gas–oil ratio (Rs) are two crucial PVT parameters used for modeling and volumetric calculations in petroleum industry. They are usually determined in laboratory or estimated using empirical correlations. Experimental methods are time-consuming and expensive where empirical correlations have limitations. Artificial intelligence can be sued overcome these limitations to develop more accurate, robust, and quick predictive tools. In this paper, we used three artificial neural network algorithms to develop intelligent models to predict Bob and Rest using 465 experimental data. Application of the Elman neural network (ENN) for this purpose is being reported for the first time. A variety of input parameters were selected based on a sensitivity analysis which include reservoir temperature (T), oil API gravity (°API), bubble point pressure (Pb), gas-specific gravity (γg), and Rs was used to predict the Bob. T, °API, Pb, γg, and Bob was used to predict the Rs. The ENN model was found superior to the other developed smart models and the empirical correlations with coefficient of determination (R2) of 0.993, root mean square error (RMSE) of 0.0093, and average absolute percent relative error (AAPRE) of 0.93% for the Bob and 0.999, 0.016, and 6.72% for the Rs, respectively. The ENN network has fewer adjustable parameters and provides faster training capabilities using fewer neurons and hidden layers compared to other ANN algorithms. The developed smart predictive tools can be safely used instead of laboratory methods and empirical correlations for a much wider ranges of input parameters and with higher accuracy and confidence. © The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature 2024.

关键词： Mean square error

来源：评论

学校读者我要写书评

暂无评论

Lessons learned from coreflood experiments with surfactant-polymer and alkali-surfactant-polymer for enhanced oil recovery

引用

petroleum 2023年第4期9卷 487-498页

作者： Ivan Kurnia Muhammad Fatchurrozi Riyaz Ghulam Anwary Guoyin Zhang Reservoir Engineering Research Group Institut Teknologi BandungIndonesia Petroleum Engineering Undergraduate Study Program Institut Teknologi BandungIndonesia Petroleum Recovery Research Center New Mexico TechUnited States

A review of coreflood experiments for chemically enhanced oil recovery(EOR)is presented in this paper,particularly surfactant-polymer(SP)and alkali-surfactant-polymer(ASP)*** objective of this review is to gain a general outlook and insight from coreflood experiments injecting SP or ASP slug as tertiary *** discussion is separated into sections based on relevant core and fluid properties as well as surfactant selection and SP/ASP slug design and their impact on incremental *** studies in this review have been published within the last twenty years but few older coreflood works have been included for *** in each reviewed study have been summarized in tables to help readers gain detailed *** learned from these past experiments should help other chemical EOR practitioners or students of the field in benchmarking or improving the outcomes of their future SP/ASP experiments.

关键词： Enhanced oil recovery Surfactant Polymer Alkali Coreflood

来源：评论

学校读者我要写书评

暂无评论

Rheo-optic in situ synchronous study on the gelation behaviour and mechanism of waxy crude oil emulsions

引用

petroleum Science 2023年第2期20卷 1266-1288页

作者： Jian Zhao Xiao-Feng Li Hang Dong Zhi-Hua Wang Young and Middle-aged Innovation Team Program of Northeast Petroleum University Energy-saving and Consumption-reducing LaboratorySurface Engineering Pilot Test Center of CNPCNortheast Petroleum UniversityDaqingHeilongjiang 163318China

An improved rheo-optic in situ synchronous measurement system was employed to investigate the gelation behaviour and mechanism of waxy crude oil emulsions. By combining transmitted natural light and reflected polarized light microscopy, a multiangle composite light source was built to achieve the simultaneous observation of wax crystals and emulsified water droplets, as well as their dynamic aggregation process. Main outcomes on the microscopic mechanism were obtained by developed microscopic image processing method. It was found that the microstructure of W/O waxy crude oil emulsion has the evolution of “individual structure--homogeneous aggregate structure--heterogeneous coaggregate structure--floc structure” during the static cooling, which results in the four stages during gelation process. Different from previous studies, the aggregation of emulsified water droplets was found to be more significant and contributes to the formation and development of the wax crystals-emulsified water droplets coaggregate, which plays a decisive role in the further evolution of the gelled microstructure. Time series microscopic images show the dynamic aggregation of emulsified water droplets and wax crystals. Two different aggregation behaviours between wax crystals and water droplets were observed. That wax crystals can not only embed in gaps between adjacent water droplets and enhance the structure, but also surround the outside of the water droplets and continue to grow resulting in the interconnection of different coaggregates to form a larger floc structure. In addition, correlation between viscoelasticity and microstructure evolution of waxy crude oil emulsions of different water contents was discussed. With increasing water contents, the microstructure is changed from wax crystal flocculation structure as the main skeleton and the emulsified water droplets embedded in it, into the aggregation of emulsified water droplets occupying the main position. When the number of wax

关键词： Waxy crude oil emulsion Rheo-optic in situ synchronous measurement Gelation Microscopic mechanism Structural behaviour

来源：评论

学校读者我要写书评

暂无评论

Harnessing biochemical innovations for sustainable oil recovery: perspectives from the Indian context on green enhanced oil recovery (GEOR) methods for matured petroleum fields

引用

Environmental Science and Pollution Research 2025年第13期32卷 7894-7932页

作者： Kothawade, Tanvi R. Deshmukh, Minal Kumar, Ganesh Pathan, Aadil Sangwai, Jitendra Department of Petroleum Engineering Dr Vishwanath Karad MIT World Peace University Pune411038 India Enhanced Oil Recovery Laboratory Petroleum Engineering Program Department of Ocean Engineering Indian Institute of Technology Madras Chennai600036 India Department of Chemical Engineering Indian Institute of Technology Madras Chennai600036 India

Green enhanced oil recovery (GEOR) has emerged as an eco-friendly alternative to conventional oil recovery techniques, offering a more sustainable way to increase oil extraction while minimizing environmental harm. This review focuses on the potential of biochemicals, particularly biopolymers, and biosurfactants, in improving oil recovery in Indian oilfields. While these biochemicals, such as xanthan gum, scleroglucan, and HEC, have shown promising results in global oilfields, their application in India remains largely unexplored. By comparing the characteristics of Indian reservoirs with successful international case studies, this review highlights the feasibility and advantages of biopolymer-based EOR methods in India’s unique reservoir conditions, including high temperatures, salinity, and other challenges. Despite the proven benefits of biopolymers, such as their environmental sustainability and operational efficiency, they have not yet been widely adopted in Indian oilfields. The review identifies key research gaps, including the need for a deeper understanding of microbial and biopolymer interactions, and stresses the importance of developing sustainable and cost-effective production methods for biopolymers. The findings suggest that integrating biopolymers into India’s oil recovery processes could not only enhance extraction rates but also contribute to greener, more efficient practices. This review provides a comprehensive overview of the current state of biopolymer-based EOR and outlines future research directions, contributing to the development of more sustainable oil recovery techniques tailored to India’s specific needs. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025.

关键词： Oil well flooding

来源：评论

学校读者我要写书评

暂无评论

Effect of ammonium based ionic liquids on the rheological behavior of the heavy crude oil for high pressure and high temperature conditions

引用

petroleum 2022年第4期8卷 552-566页

作者： Sivabalan Sakthivel Sugirtha Velusamy Center for Integrative Petroleum Research(CIPR) College of Petroleum Engineering&GeosciencesKing Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Petroleum Engineering Program Department of Ocean EngineeringIndian Institute of Technology MadrasChennai600036India

Heavy crude oil(HCO)production,processing,and transportation forms several practical challenges to the oil and gas industry,due to its higher *** the shear rheology of this HCO is highly important to tackle production and flow *** environmental and economic viability of the conventional methods(thermal or dilution with organic solvents),force the industry to find an *** present study was constructed to investigate the effect of eco-friendly ionic liquids(ILs)on the HCO's rheology,at high temperature and high *** different alkyl ammonium ILs were screened for HCO's shear rheology at the temperatures of 25-100℃ and for pressures 0.1e10 *** addition of ILs reduced the HCO's viscosity substantially from 25 to 33%from their original HCO ***,it aids to reduce the yield stress to about 15-20%at all the studied experimental ***,the viscoelastic property of the HCO was studied for both strain-sweep and frequencysweep and noticed the ILs helps to increase HCO's loss modulus(G00)by reducing storage modulus(G0),it leads to the reduction of the crossover point around 25-32%than the standard *** the ILs addition with HCO converts its solid-like nature into liquid-like ***,the effect ILs chain length was also studied and found the ILs which has lengthier chain length shows better efficiency on the ***,the microscopic investigation of the HCO sample was analyzed with and without ILs and witnessed that these ILs help to fragment the flocculated HCO into smaller *** findings indicate that the ILs could be considered as the better alternative for efficient oil production,processing,and transportation.

关键词： Crude oil Ionic liquids Loss modulus Microscopy Storage modulus Viscosity reduction

来源：评论

学校读者我要写书评

暂无评论

Quantitative Laboratory Assessment of Caprock Integrity for Geological Carbon and Hydrogen Storage

Quantitative Laboratory Assessment of Caprock Integrity for ...

引用

2024 SPE Annual Technical Conference and Exhibition, ATCE 2024

作者： Nath, F. Cabezudo, E. Romero, N.G. Petroleum Engineering Program School of Engineering Texas A&M International University LaredoTX United States

ISBN: (纸本)9781959025375

Caprock integrity is a critical factor in geological carbon storage (GCS) and hydrogen storage (GHS), as it ensures containment assurance, environmental and safety considerations, storage efficiency, risk mitigation, long-term viability, public and regulatory confidence, economic considerations, and informed decision-making. Caprock can break mechanically by radial cracking, plastic deformation, inner and outrebounding, and channeling. Understanding these failure mechanisms is crucial, but traditional deformation tracking methods have limitations. To address this gap, this study utilizes three-dimensional digital image correlation (3D-DIC) to investigate the deformation and failure of caprock specimens from GCS and GHS, thereby ensuring their integrity. Caprock samples were compressed diametrically using a precision 100 kN electromechanical load frame moving at 0.05 mm/min. There were a variety of minerals in the samples that were examined. During the diametrical compression testing, a 3D-DIC system was set up to monitor the samples without touching them at a rate of 10 frames per second. A black-and-white speckle pattern is applied to the specimen to monitor its deformation under stress. The 3D-DIC system is used to process, visualize, and analyze caprock sample damage under varied load conditions. A load-strain relationship was established by integrating several factors: 1) DIC-generated horizontal, vertical, and shear strain maps, providing insight into the sequence of strain development and fracture occurrences attributed to pre-existing or natural fractures, anisotropy, heterogeneity, laminations, faults, cracks, or channeling. 2) The results demonstrated a 4-stage deformation evolution process: initial, linear elastic, elastic-plastic, and plastic damage. 3) Additionally, the study illustrated the failure process of caprock samples, yielding tension and compression within ±0.05%, shear within ±0.001%, and a tension-compression ratio ranging from 1% to 5%. 4) t

关键词： Compression testing

来源：评论

学校读者我要写书评

暂无评论

Unraveling Damage Variables in Hot Dry Rocks: An Optical Investigation of Geothermal Rocks from UTAH FORGE

Unraveling Damage Variables in Hot Dry Rocks: An Optical Inv...

引用

2024 SPE Annual Technical Conference and Exhibition, ATCE 2024

作者： Nath, F. Cabezudo, E. Petroleum Engineering Program School of Engineering Texas A&M International University LaredoTX United States

ISBN: (纸本)9781959025375

Geothermal resources are worldwide renowned for their sustainable and clean attributes. The US Department of Energy (DOE) estimates that harnessing only 0.1% of Earth's geothermal energy could support mankind for two million years. Enhanced geothermal systems (EGS) are highly acclaimed for their ability to extract heat from hot, dry rock. However, issues remain in assuring safe drilling and proper fracturing owing to a lack of knowledge of damage factors and fracture sequences, both of which are crucial for regulating crack propagation. Conventional laboratory approaches often fail to capture the nuanced variation seen in HDR. To address this, the present work uses a three-dimensional optical approach called digital image correlation (3D-DIC) to investigate damage factors in HDR. HDR samples from the DOE UTAH FORGE project's Well 16B (78)-32 are subjected to uniaxial (D 1.5", L 2") and diametrical (D 1.5", L 1") compression using a 100kN precision electro-mechanical load Instron frame at a constant displacement rate of 0.05mm/min. During the uniaxial and diametrical compression studies, a Trilion 3D-DIC image capturing system was used to monitor the samples at a rate of 10 frames per second in a non-contact manner. To monitor deformation during loading, a black-in-white speckle pattern is placed on the specimen. The GOM 3D-DIC system is used to process images, visualize data, and analyze HDR damage variables under various load circumstances. The findings showed that DIC-generated quantitative full-field strain preliminary maps (tension, compression, and shear) include all sequences involved in the damage process as well as discrete strain localization zones (SLZ). Damage factors are quantified using DIC maps to assess sample damage;the tension-compression ratio ranges between 2% and 8%. The damage evolution process of HDR specimens is divided into four phases that are assessed using damage variables: initial damage stage, linear elastic, elastic-plastic, and plastic

关键词： Hot dry rock systems

来源：评论

学校读者我要写书评

暂无评论

Experimental Investigation of Salinity and Pressure Impact on CO2 Solubility in Saline Aquifers

Experimental Investigation of Salinity and Pressure Impact o...

引用

2024 Abu Dhabi International petroleum Exhibition and Conference, ADIPEC 2024

作者： Elmasry, Youssef Enab, Khaled Addo-Mensah, Alfred Petroleum Engineering Program Texas A&M International University LaredoTX United States

ISBN: (纸本)9781959025498

Addressing global climate change necessitates innovative solutions for carbon capture and storage (CCS).With their vast capacities, saline aquifers emerge as promising repositories for CO2 *** solubility is the primary trapping mechanism for CO2 in saline aquifers, a significant knowledge gap exists regarding the role of salinity level and operation pressure on the CO2 solubility in *** study delves into the experimental investigation of CO2 solubility in different saline aquifers, focusing on phase behavior analysis through the use of a Pressure-Volume-Temperature (PVT) *** research aims to enhance our understanding of the fundamental interactions between CO2 and brine under reservoir conditions, critical for optimizing CCS *** were conducted to observe CO2 solubility in five different brines with different salinity levels at various *** experiments were designed to measure the equilibrium phase behavior of the CO2-brine system, providing valuable data on CO2 dissolution rates and phase transitions under a range of pressure *** experimental data revealed that pressure and salinity significantly influence CO2 solubility in saline *** pressures were found to increase CO2 solubility, while the effect of salinity presented a more complex interaction;lower brine salinity showed higher storage and CO2 *** findings contribute to a deeper understanding of the thermodynamic principles governing CO2 sequestration in saline aquifers and highlight the importance of tailoring CCS operations to specific reservoir *** conclusion, the results of this experimental investigation illuminate the critical role of phase behavior analysis in understanding CO2 solubility in saline aquifers, marking a significant step forward in CCS *** the presented empirical data with analytical modeling is the way to develop a new pathway for enhancing the efficiency and reliability

关键词： Carbon capture and storage

来源：评论

学校读者我要写书评

暂无评论

Effect of seismic vibration amplitudes and frequencies in dislodging an entrapped fluid in a pore model

引用

Egyptian Journal of petroleum 2023年第1期32卷 1-7页

作者： Kanjirakat, Anoop Belaidi, Abdelhak Carvero, Arnel Amani, Mahmood Retnanto, Albertus Petroleum Engineering Program Texas A&M University at Qatar Education City Doha Qatar

The impact of seismic vibrational amplitude and frequency in dislodging an entrapped diesel globule in a pore model is experimentally studied. The effective change occurring inside a 3D printed pore model estimated from a systematic image analysis methodology is developed to represent the oil recovery. The pore model is subjected to sinusoidal vibrations with amplitudes ranging from 0.1 mm to 2 mm and frequencies ranging from 5 to 100 Hz. Dislodgment of entrapped diesel is observed for frequency values between 40 and 80 Hz with vibration amplitude above 0.5 mm. Even though increasing the vibration frequency increases the vibration-induced acceleration, the dislodgment of the entrapped fluid is not observed at higher frequencies. Smaller vibration amplitudes imparted by the shaker and a possible slip flow at the oscillating walls occurring at higher frequencies are reasoned for this observation. © 2022 Egyptian petroleum Research Institute

关键词： Oil recovery Seismic stimulation Vibration amplitude Vibration frequency

来源：评论

学校读者我要写书评

暂无评论

Experimental Visualization of the Effect of Flow Rate on Downhole Drilling Vibration

Experimental Visualization of the Effect of Flow Rate on Dow...

引用

2024 IADC/SPE International Drilling Conference and Exhibition, DC 2024

作者： Maitra, E.K. Al Dushaishi, M.F. Petroleum Engineering Program Department of Chemical Engineering Oklahoma State University Stillwater 420 Engineering North StillwaterOK74078 United States

ISBN: (纸本)9781959025108

Downhole drilling dynamic data has proven to be valuable operational information for vibration mitigation and drilling optimization. Yet, the downhole dynamic behavior of the BHA is often misinterpreted. Most downscaled experimental investigations neglect the changes in dynamic field conditions due to fluid flow. The objective of this work is to establish a visual understanding of downhole vibration data analysis in the presence of fully circulated fluid flow and to investigate the effect of flow rate on the BHA lateral trajectory, using a scaled laboratory BHA. A mechanically downscaled test assembly adhering to the geometric and material property relations of a field-size BHA section was designed and manufactured to investigate the nature of lateral vibration under field-like fluid flow conditions. Axial excitation and rotation were induced respectively using an electromagnetic shaker and an electrical motor. Fluid was pumped through the BHA using an electric pump and an in-house designed swivel. The BHA trajectory was mapped using inductive displacement sensors mounted outside the transparent wellbore structure for direct visual correlation between the BHA movement and the vibration data. Real-time induced bit vibration was observed and recorded using a high-frequency tri-axial accelerometer. The results from this experiment provide precise and insightful visual information for BHA trajectory correlation with the acceleration data acquired under field-like fluid flow conditions. The BHA vibration behavior of high-frequency accelerations (shock and vibration), critical lateral vibration phenomena such as whirling, and shift in dominant vibration frequencies were characterized based on both the nature of dynamic forces at the bit and fluid flow rates. Instead of a general observation of the vibration-damping effect in the presence of circulating fluid, the experiment also presents correlations between vibration characteristic changes at different frequencies for di

关键词： Trajectories

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：