Article
Engineering, Chemical
Farzad Mokhtari, Siavash Riahi, Behzad Rostami
Summary: Combined low salinity water (LSW) and polymer (LSP) flooding is an effective method for enhancing oil recovery. The injection of LSW can alter the wettability and improve oil recovery in samples without clay particles. Secondary LSW injection can increase the oil recovery by 8% compared to secondary synthetic seawater (SSW) injection in oil-wet samples, and tertiary LSW injection or LSP flooding after secondary SSW injection can achieve even higher oil recovery in oil-wet samples.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Wenlian Xiao, Jitian Ren, Wanfen Pu, Chengdong Yuan, Lingwei Meng, Lingli Zheng, Hui Zhao, Qianrui Cheng
Summary: Foam-assisted deoxidized-air flooding is a promising technique for improving oil recovery in low-permeability oil reservoirs. This study conducted laboratory experiments and field pilot analysis in a low-permeability oil reservoir in China to investigate the displacement mechanism of foam-assisted deoxidized-air flooding. The results showed that the gas-liquid ratio had different effects on oil recovery at different water cut stages, and the differences in oil recovery were linked to changes in the displacement mechanism.
Article
Energy & Fuels
Pedro M. Rendel, Bruce Mountain, Karen Louise Feilberg
Summary: The injection of low-salinity water into carbonate oil-reservoirs can alter the geochemical equilibrium and surface wettability of the reservoir rocks. Experimental results show that mineral dissolution and the precipitation of new secondary phases play a key role in the geochemical changes during low-salinity water flooding. The proposed geochemical pathway accurately describes the experimental observations and provides valuable insights into enhanced oil recovery methods.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Tagwa A. Musa, Ahmed F. Ibrahim, Hisham A. Nasr-El-Din, Anas. M. Hassan
Summary: The study confirmed the potential of guar gum as a natural polymer for EOR applications in sandstone reservoirs, showing good stability and viscosity under high-temperature and high-salinity conditions. Additionally, flooding experiments demonstrated a 16% increase in recovery factor.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Energy & Fuels
Ahmed S. Adila, Emad W. Al-Shalabi, Waleed Alameri
Summary: This paper investigates the effect of hybrid surfactant-LSWI/EWI on oil recovery from carbonate cores under harsh conditions through a numerical 2D simulation model. The results show that the hybrid surfactant-EWI can alter wettability and achieve higher oil recovery compared to other techniques. The study emphasizes the importance of surfactant adsorption and concentration for the hybrid surfactant-EWI technique.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Polymer Science
Rafael E. Hincapie, Ante Borovina, Elisabeth Neubauer, Muhammad Tahir, Samhar Saleh, Vladislav Arekhov, Magdalena Biernat, Torsten Clemens
Summary: This study investigates the wettability alterations through imbibition/flooding and their synergy with interfacial tension (IFT) for alkalis, nanoparticles, and polymers. It demonstrates the influence of the oil total acid number (TAN), chemical agents, and reservoir mineralogy on fluid-fluid and rock-fluid interactions. A laboratory evaluation workflow combining various assessments is used to evaluate wettability alteration, IFT changes, and recovery. The study provides novel data on the synergy of IFT, Amott imbibition, and core floods for the studied chemical processes.
Article
Chemistry, Physical
Rohit Kumar Saw, Anshuman Singh, Neetish Kumar Maurya, Ajay Mandal
Summary: Low salinity water flooding is cost-effective and environmentally friendly, and the addition of nanoparticles and polymers can significantly increase oil recovery. The viscosity of complex chemical slugs can be increased by adding nanoparticles to polymer solutions. Low salinity water requires a lower concentration of polymer to reach the target viscosity compared to high saline formation water. The addition of nanoparticles reduces interfacial tension and contact angle, leading to higher oil recovery in low salinity water. Injection of low salinity water-based complex fluid results in incremental recovery of OOIP compared to low salinity water and conventional formation water flooding.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Energy & Fuels
Peyman Koreh, Mostafa Lashkarbolooki, Majid Peyravi, Mohsen Jahanshahi
Summary: This study investigated the performance of different types of surfactants on the surface activity, emulsion size, and surface charge of five oil samples. The effects of various parameters on the interfacial tension of crude oil/surfactant solutions were comprehensively analyzed. The results showed that the properties of the surfactants, crude oil type, and ionic strength influenced the interfacial tension, surface charge, and microemulsion size, but not in a straightforward manner. Among the surfactants considered, the cationic surfactant showed the lowest dependency on the crude oil type, while the non-ionic surfactant showed the highest dependency. CTAB cationic surfactant exhibited the most efficient performance with a microemulsion size of 102 nm and surface charge near the isoelectric point.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Physical
Sajjad Ahmadi Goltapeh, Saeed Abdolahi, Jens Jahren, Rohaldin Miri, Helge Hellevang
Summary: This study uses molecular dynamics to simulate the behavior of the calcite-brine-oil system during low salinity water flooding in oil reservoirs. The results reveal the changes in ion positions and the extended trend of the double electric layer, which might be the cause of oil displacement.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Energy & Fuels
Ranjan Phukan, Rahul Saha
Summary: A low salinity surfactant (LSS) system was developed to enhance the performance of immiscible surfactant alternating gas/CO2 (SAG) flooding in sandstone reservoir cores. LSS solutions showed positive impacts on various mechanisms responsible for enhanced oil recovery (EOR), including reducing surface and interfacial tension, altering wettability, improving CO2-foam stability, and decreasing surfactant adsorption.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Physical
Yongping Huang, Caili Dai, Zhixue Chen, Mengjiao Cao, Qixin Liu, Zhongzhong Chu, Ye Yuan, Yining Wu
Summary: This study discovered the importance of oil droplet swelling in low salinity water flooding, showing that osmotic pressure, oil-soluble surfactants, and original water content of oil droplets are necessary factors affecting oil droplet swelling. The research demonstrates that the diffusion of water molecules into oil droplets is the basic reason for oil droplet swelling, and osmotic pressure serves as the driving force for water molecule diffusion.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Geological
Binh T. Bui
Summary: This study evaluates the effects of water injection on oil recovery in liquid-rich unconventional reservoirs using a new mass transport model and geomechanical model. The results show that osmosis significantly contributes to oil recovery from very low permeability shale matrix over a long time period, while shale swelling significantly reduces overall oil recovery. Water injection is not recommended for formations with swelling potential.
ROCK MECHANICS AND ROCK ENGINEERING
(2021)
Article
Energy & Fuels
Tina Puntervold, Aleksandr Mamonov, Ivan Dario Pinerez Torrijos, Skule Strand
Summary: This study investigated the relationship between acidic and basic crude oil components and wetting tendencies on core samples of various mineralogies. The results showed that core mineralogy influences the adsorption preference of POC, impacting wettability and capillary forces. Oil recovery tests demonstrated that adsorption of oil components significantly reduced water wetness on all cores.
Article
Chemistry, Physical
D. A. Dixon, J. Stone, K. Birch, C. S. Kim
Summary: The NWMO is evaluating Sedimentary and Crystalline geosphere media for a potential Deep Geological Repository (DGR) for nuclear waste. They tested bentonite-aggregate mixtures with different compositions and observed the effect of compaction efforts on densification. The results showed that the materials met the required performance goals for swelling pressure and hydraulic conductivity.
APPLIED CLAY SCIENCE
(2023)
Article
Environmental Sciences
Virginia Cabrera, Ruben Lopez-Vizcaino, Vicente Navarro, Angel Yustres
Summary: This paper presents a database of thermo-hydro-chemo-mechanical tests on bentonites, named Bento_DB4THCM. The database includes a comprehensive collection of experimental tests for validation exercises of numerical codes simulating the behavior of bentonites. The tests cover a wide range of clays, and the results are from different swelling and squeezing tests. The database is provided as Supplementary material.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Thermodynamics
Baghir A. Suleimanov, Hakim F. Abbasov, Fuad F. Valiyev, Rayyat H. Ismayilov, Shie-Ming Peng
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME
(2019)
Article
Energy & Fuels
Baghir A. Suleimanov, Elchin F. Veliyev, Aliyev A. Azizagha
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2020)
Article
Physics, Applied
B. A. Suleimanov, E. F. Veliyev, N. V. Naghiyeva
Summary: In this study, colloidal dispersion gels (CDGs) were synthesized for in-situ fluid diversion by modifying the polymer mixture. The study investigated the effect of crosslinker/polymer concentration, salinity, gelation time, rheological behavior, particle size distribution of CDGs, as well as their thermo-chemical stabilities and resistance/residual resistance factor (RRF).
MODERN PHYSICS LETTERS B
(2021)
Article
Engineering, Petroleum
E. F. Veliyev
Summary: The study developed a composition of an amphiphilic block polymer that forms a stable emulsion system and possesses reversible-thermal gel-forming properties. The results indicate that emulsion stability increases with the concentration increase of the block polymer, leading to a 37% increase in oil recovery.
Article
Engineering, Petroleum
E. F. Valiyev, V. M. Askerov, A. A. Aliyev
Summary: The demand for hydrocarbons has been increasing significantly over the past few decades and is projected to continue rising. Despite efforts to develop innovative technologies to meet the demand, improving the efficiency of heavy oil field development is a more realistic alternative. Current methods that modify the physical and chemical properties of oil have drawbacks that hinder widespread commercial application.
Article
Engineering, Petroleum
E. F. Veliyev, S. V. Shirinov, T. E. Mammedbeyli
Summary: Artificial Intelligence (AI) is a system that simulates the thinking process and is increasingly applied in various fields, including the oil and gas industry. The application of AI enables coordination and cooperation among different departments and sectors, leading to improved efficiency and quality, cost reduction, and increased economic benefits.
Article
Engineering, Petroleum
E. F. Veliyev, A. A. Aliyev
Summary: Portland cement is commonly used in oil and gas well cementing, but it has drawbacks such as microannuli formation and cracks in the cement matrix. Geopolymer has shown potential as an alternative to Portland cement, overcoming these issues. The study compared the parameters of plugging materials containing geopolymer and Portland cement when contaminated with water-based drilling mud. The results indicate that geopolymer-based solutions are more resistant to contamination than Portland cement-based solutions.
Article
Engineering, Petroleum
E. F. Veliyev, A. A. Aliyev, T. E. Mammadbayli
Summary: The increase in number of mature fields leads to a rise in water cut of produced fluids, often due to water coning. A ranking mechanism based on machine learning methods is proposed to reduce resource intensity of existing prediction models. Results show improvements with the least squares support vector machine compared to ANN, with both models demonstrating acceptable practical application.
Article
Physics, Applied
B. A. Suleimanov, E. F. Veliyev, N. V. Naghiyeva
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2020)
Review
Engineering, Petroleum
E. F. Veliyev
Article
Engineering, Petroleum
B. A. Suleimanov, Y. A. Latifov, E. F. Veliyev
Article
Engineering, Petroleum
E. F. Veliyev
