Article
Environmental Sciences
V. E. Spooner, S. Geiger, D. Arnold
Summary: By introducing the retardation factor R and new metrics, single-porosity flow diagnostics have been extended to dual-porosity systems for more accurate assessment of displacement efficiency and dynamic heterogeneity in fractured reservoirs. Combining L-c*(star) and E-v*(star) with stochastic optimization algorithms can improve the displacement efficiency of injected fluid. Dual-porosity flow diagnostics have advantages in screening parameter space and quickly identifying scenarios that need further study.
WATER RESOURCES RESEARCH
(2021)
Article
Energy & Fuels
Majid Manafi, Azim Kalantariasl, Mojtaba Ghaedi
Summary: This research focused on improving the simulation and visualization of multiphase flow in fractured porous media and studying the impact of different parameters on gravity drainage performance. The grey relational analysis revealed that the physical properties of the fluids have the most influence on re-infiltration, while tilt angle reduces the degree of re-infiltration. These findings provide insights into the relative influence of different reservoir parameters on gravity drainage performance and block-to-block interactions.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Leidy Laura Alvarez, Leonardo Jose do Nascimento Guimaraes, Igor Fernandes Gomes, Leila Beserra, Leonardo Cabral Pereira, Tiago Siqueira de Miranda, Bruno Maciel, Jose Antonio Barbosa
Summary: The impact of fracture topology on shape factor and equivalent permeability is significant, especially showing higher hydraulic connectivity (f) values in synthetic scenarios. Numerical simulations show that analytical methods are not efficient for estimating equivalent permeability of fractured medium.
Article
Energy & Fuels
Tesleem Lawal, Mingyuan Wang, Gayan A. Abeykoon, Francisco J. Arguelles-Vivas, Ryosuke Okuno
Summary: This paper compares the performance of different wettability modifiers in enhancing oil recovery from shales. The results show that 3pIB performed better than IB, with 3pIB starting to produce oil from the matrix earlier and achieving a higher overall oil recovery rate. Additionally, there was no significant difference in brine composition between the injected and produced water for IB.
Review
Energy & Fuels
Marzhan Karimova, Razieh Kashiri, Peyman Pourafshary, Randy Hazlett
Summary: Fluid flow in naturally fractured reservoirs is complex and heterogeneous, and understanding fracture-matrix interactions is crucial. Fluid movement between fractures and matrix occurs through spontaneous imbibition, which can be affected by wettability. Low-salinity water injection is considered as an effective enhanced oil recovery approach for fractured and non-water-wet carbonate rocks. This review summarizes experimental and numerical studies on the imbibition process and highlights the need for further research on wettability alteration and simulation models for co/countercurrent flows in naturally fractured reservoirs.
Article
Geochemistry & Geophysics
Chunhui Du, Changhe Yin, Hong Cheng, Feiyu Yuan, Yang Zhao
Summary: With the development of Tahe Oilfield entering the high water cut stage, gas channeling in the fractured-vuggy system during nitrogen injection has caused inefficiencies in some wells. The distribution of fractures, vuggy, and remaining oil has become a pressing issue for improving the development effect of gas flooding. Microgravity monitoring technology uses high-quality data to obtain residual gravity anomaly and density distribution of the target layer, and depicts the fractured-vuggy distribution through edge detection. The research results provide a basis for adjusting injection-production scheme and improving reservoir development effect.
Article
Energy & Fuels
Yu Fuwei, Gao Zhendong, Zhu Wenhao, Wang Chuan, Liu Fan, Xu Fei, Jiang Hanqiao, Li Junjian
Summary: Microfluidic chips with fracture matrix of various sizes, boundaries, and wettability were designed for studying oil-water, oil-surfactant solution, and oil-Winsor III type surfactant solution imbibition mechanisms. Results showed that reducing interfacial tension weakened capillary forces, affecting oil flow and recovery rates in different systems. The experiments demonstrated that capillary forces and gravity played key roles in the imbibition processes under different interfacial tension conditions.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2021)
Article
Engineering, Petroleum
Cao Wei, Yang Liu, Ya Deng, Shiqing Cheng, Hassan Hassanzadeh
Summary: This study aims to investigate the temperature behavior of geothermal reservoirs and explore suitable analysis methods for reservoir characterization and development potential evaluation. Numerical and analytical models were developed to analyze the temperature behavior, taking into account various factors. The results show that temperature data provide important information about reservoir properties and can be used to estimate key parameters. Furthermore, an integrated workflow combining pressure transient analysis and temperature transient analysis was introduced.
Article
Chemistry, Applied
Behrouz M. Davoudi, Mehdi Assareh
Summary: Surfactant-aided gravity drainage is an enhanced oil recovery technique used in fractured carbonate reservoirs with water-invaded zones, predominantly oil-wet or mixed-wet rocks. This study presents a comparison of the re-infiltration mechanism between surfactant-aided gravity drainage and conventional oil-water gravity drainage, examining the effects of various factors on re-infiltration such as rock and fluid properties, wettability alteration, and surfactant adsorption.
JOURNAL OF SURFACTANTS AND DETERGENTS
(2021)
Article
Energy & Fuels
Taha Zarin, Ali Sufali, Mojtaba Ghaedi
Summary: The imbibition process is crucial in the production of naturally fractured formations, and different equations have been proposed to describe it. This study analyzes the performance of two- and three-parameter models in describing imbibition recovery trends and finds that the three-parameter models (1HMT and AHMT) are more accurate. The 1HMT model is identified as the best model for predicting the recovery factor in fractured reservoirs.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2023)
Article
Mechanics
Heqian Zhao, Kan Wu, Zhongwei Huang, Zhengming Xu, Huaizhong Shi, Haizhu Wang
Summary: Hydraulic fracturing has become a crucial technology for unconventional oil and gas development. CO2 fracturing shows advantages in shale gas exploitation due to its ability to activate more natural fractures in reservoirs. The study establishes a CO2 fracturing model in naturally fractured reservoirs and demonstrates its effectiveness in creating longer, narrower fractures and connecting more natural fractures to stimulate a larger reservoir volume. Additionally, natural fracture spacing and length significantly impact the distribution and connectivity of natural fractures in CO2 fracturing.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Chemistry, Multidisciplinary
Yuejie Wang, Huiqing Liu, Yu Li, Qing Wang
Summary: The research established a spontaneous imbibition model for tight reservoirs, verified its reliability through experiments, and found variations in imbibition area and recovery under different boundary conditions. The superimposed effect can not only enhance oil washing efficiency but also inhibit the spread of the imbibition area.
Article
Energy & Fuels
Faisal Awad Aljuboori, Jang Hyun Lee, Khaled A. Elraies, Karl D. Stephen, Muhammed Khan Memon
Summary: This paper presents an improvement to the original MINC model by using a particular case of two subdomains model and making adjustments to the calculation of fluid saturation. The new adjustments have provided a stable solution and improved simulation results compared with the original MINC model. The matrix layers in the model have the advantage of handling various heterogeneities with excellent simulation accuracy and reliable performance and prediction.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2022)
Article
Mechanics
Heqian Zhao, Kan Wu, Zhongwei Huang, Zhengming Xu, Huaizhong Shi, Haizhu Wang
Summary: CO2 fracturing shows better effectiveness and efficiency in naturally fractured reservoirs, generating relatively longer but narrower fractures, activating more natural fractures, and creating a larger stimulated reservoir volume.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Multidisciplinary Sciences
Loai Saifelden Elkamel, Behnam Sedaee
Summary: Steam injection in naturally fractured reservoirs presents a complex and nonlinear problem due to the coupling of matrix and fracture systems. This study simulated cyclic steam stimulation oil recovery in a naturally fractured reservoir, analyzed the impact of operating parameters on oil recovery and net present value, and found that optimizing injection period, steam slug size, soak and production periods is crucial for maximizing recovery and cost efficiency.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Sabber Khandoozi, Mohammad Reza Malayeri, Masoud Riazi, Mojtaba Ghaedi
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2020)
Article
Geosciences, Multidisciplinary
Zahra Negahdari, Mohammad R. Malayeri, Mojtaba Ghaedi, Sabber Khandoozi, Masoud Riazi
Summary: This study explores the gradual wettability alteration method during low-salinity water flooding and compares it with the instantaneous method. The results indicate that the differences between gradual and instantaneous wettability alteration are more noticeable at the early stage of injection, highlighting the importance of considering gradual wettability alteration in the early stages of low-salinity water flooding.
NATURAL RESOURCES RESEARCH
(2021)
Article
Energy & Fuels
Khadijeh Zare, Hojjat Mahiyar, Mojtaba Ghaedi
Summary: The rising water level in fracture networks of a naturally fractured gas reservoir poses challenges to gas recovery, but using seismic waves can be a cost-effective and environmentally friendly enhanced recovery method. This study investigates the efficiency of seismic vibration in driving remaining gas into fractures, with promising results showing substantial gas recovery enhancement at lower frequencies and in highly permeable matrix and fractures.
JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME
(2021)
Article
Chemistry, Multidisciplinary
Jassem Abbasi, Mojtaba Ghaedi, Masoud Riazi
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2020)
Article
Energy & Fuels
Sina Avaji, Mohammad Javad Amani, Mojtaba Ghaedi
Summary: This study focuses on calculating the phase equilibrium of hydrocarbons in the presence of electrolyte solutions. By collecting equilibrium data and using different equations of state, the researchers successfully modeled the phase behavior of systems containing water, alcohol, and hydrocarbons. They proposed an equation of state that considers hydrogen bonds and ion interactions to predict the phase behavior of systems containing hydrocarbons, water, alcohol, and salt, achieving satisfactory results with an error range of 1% to 12%.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2021)
Article
Geosciences, Multidisciplinary
Amirhossein Aghabarari, Mojtaba Ghaedi
Summary: This paper discusses the complex interactions and transfer functions in the production mechanism of naturally fractured reservoirs, proposing a new scaling equation for predicting oil production recovery.
NATURAL RESOURCES RESEARCH
(2021)
Article
Energy & Fuels
Zahra Negahdari, Sabber Khandoozi, Mojtaba Ghaedi, M. Reza Malayeri
Summary: Low salinity water flooding is a novel enhanced oil recovery method that has gained attention in recent years. Optimization of the composition of injection water is crucial to reduce the risk of incompatibility and formation damage. This study presents a detailed workflow to maximize wettability alteration and minimize compatibility in a core model of carbonate rock using a genetic algorithm. The results indicate that there is no unique optimized water composition for an efficient low salinity water flooding process, and suggestions for optimization are provided.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Majid Manafi, Azim Kalantariasl, Mojtaba Ghaedi
Summary: This research focused on improving the simulation and visualization of multiphase flow in fractured porous media and studying the impact of different parameters on gravity drainage performance. The grey relational analysis revealed that the physical properties of the fluids have the most influence on re-infiltration, while tilt angle reduces the degree of re-infiltration. These findings provide insights into the relative influence of different reservoir parameters on gravity drainage performance and block-to-block interactions.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Niloofar Kazemi, Mojtaba Ghaedi, Fatemeh Zaremoayedi, Hamid Behmanesh
Summary: This study introduces a flowing material balance method for non-volumetric dry gas and gas condensate reservoirs, modifying existing equations with a compressibility parameter to accurately estimate reservoir parameters. Validation results demonstrate the efficiency of the method. Uncertainty analysis indicates the significant impact of appropriate aquifer parameters on reservoir parameter estimation.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Marzieh Ghadimi Mahanipour, Mojtaba Ghaedi
Summary: This study used reactive numerical simulations to investigate the generation of H2S by microorganisms in aquifers and oil reservoirs. The results showed significant differences in the distribution of H2S in the radial coordinate compared to the linear coordinate, highlighting the need for radial grid refinement in reservoir simulation. The presence of oil also delayed the generation of H2S. These findings enhance our understanding of microbial souring during water injection in porous media.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Fatemeh Zaremoayedi, Mojtaba Ghaedi, Niloofar Kazemi
Summary: This study proposes a new production data analysis method for estimating the initial gas in place and average reservoir pressure in naturally fractured gas condensate reservoirs, by introducing a modified compressibility parameter into the conventional flowing material balance (FMB) equations. The impact of aquifer variation on output results was studied using a Monte-Carlo simulation approach. The results prove the accuracy of the proposed method.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Physical
Javad Ebrahimi, Behnam Shahsavani, Mojtaba Ghaedi, M. Reza Malayeri, Masoud Riazi
Summary: This study presents a systematic screening approach to evaluate the efficacy of different inhibitors for two crude oils with high asphaltene content. Results show that DBSA is the most efficient inhibitor, but its applicability is limited in cases where both water production and asphaltene deposition occur simultaneously. Additionally, dispersant 110 demonstrates superior dispersion capabilities under low centrifugal force. Overall, dispersant 110 shows the most promising performance in different test methods.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Energy & Fuels
Ameneh Darban, Mojtaba Ghaedi, Jafar Qajar
OIL AND GAS SCIENCE AND TECHNOLOGY-REVUE D IFP ENERGIES NOUVELLES
(2020)
Article
Energy & Fuels
Amirhossein Aghabarari, Mojtaba Ghaedi, Masoud Riazi
PETROLEUM EXPLORATION AND DEVELOPMENT
(2020)