The Experts below are selected from a list of 62103 Experts worldwide ranked by ideXlab platform
Amir H Mohammadi - One of the best experts on this subject based on the ideXlab platform.
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Recent advances in application of nanotechnology in chemical enhanced oil Recovery: Effects of nanoparticles on wettability alteration, interfacial tension reduction, and flooding
'Elsevier BV', 2018Co-Authors: Jagar A Ali, Kamal Kolo, Abbas Khaksar Manshad, Amir H MohammadiAbstract:Chemical methods of enhanced oil Recovery (CEOR) are applied for improving oil Recovery from different kinds of oil reservoirs due to their ability for modifying some crucial parameters in porous media, such as mobility ratio (M), wettability, spreading behavior of chemical solutions on rock surface and the interfacial tension (IFT) between water and oil. Few decades ago, the surfactant and polymer flooding were the most common CEOR methods have been applied for producing the remained hydrocarbon after primary and Secondary Recovery techniques. Recently, more attention has been focused on the potential applications of the nanotechnology in enhanced oil Recovery (EOR). For this purpose, many studies reported that nanoparticles (NPs) have promising roles in CEOR processes due to their ability in changing oil Recovery mechanisms and unlocking the trapped oil in the reservoir pore system. This paper presents a comprehensive and up-to-date review of the latest studies about various applications of nanoparticles (NPs) within the surfactant (S), polymer (P), surfactant-polymer (SP), alkaline-surfactant-polymer (ASP) and low salinity waterflooding processes, which exhibits the way for researchers who are interested in investigating this technology. The review covers the effects of nanoparticles on wettability alteration, interfacial tension reduction and oil Recovery improvement, and discusses the factors affecting the rock/fluid interaction behavior in porous media through the nanofluid flooding. Keywords: Nanoparticles, Chemical EOR, Interfacial Tension, Wettability alteration, Nanoflui
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experimental and modeling studies on the effects of temperature pressure and brine salinity on interfacial tension in live oil brine systems
Journal of Molecular Liquids, 2016Co-Authors: Ali Baratiharooni, Aboozar Soleymanzadeh, Afshin Tatar, Adel Najafimarghmaleki, Seyedjamal Samadi, Amir Yari, Babak Roushani, Amir H MohammadiAbstract:Abstract Interfacial tension (IFT) is a key parameter which affects the remaining oil in place and fluid distributions in an oil reservoir. Mobilization of trapped oil in a reservoir after primary and Secondary Recovery schemes, as part of a tertiary oil Recovery, requires a true and accurate understanding of interfacial interactions between oil, brine and reservoir rock. This study presents an investigation of temperature, pressure and synthetic formation water salinity effects on interfacial tension of two carbonate oil reservoirs. A pendant drop instrument was used to perform the measurements. In addition, Least Square Support Vector Machine (LS-SVM) in combination with Coupled Simulated Annealing (CSA) was used to model the values of IFT. Results show that the IFT of reservoir A increases with increasing temperature, pressure and salinity of synthetic formation water and the IFT data for reservoir B increases with increasing pressure and salinity of synthetic formation water but decreases with increasing pressure. The results of modeling studies show that the developed model is accurate for prediction of experimental IFT data.
Mehdi Zallaghi - One of the best experts on this subject based on the ideXlab platform.
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experimental evaluation of carbonated waterflooding a practical process for enhanced oil Recovery and geological co2 storage
Greenhouse Gases-Science and Technology, 2018Co-Authors: Puyan Bakhshi, Riyaz Kharrat, Abdolnabi Hashemi, Mehdi ZallaghiAbstract:The rapid escalation of anthropogenic CO2 emissions at the same time as the growth in energy demand has brought the importance of CO2 enhanced oil Recovery (EOR) into the spotlight. Nevertheless, fundamental problems with conventional CO2 injection have paved the way for practicing other strategies, such as carbonated waterflooding (CWF), i.e., flooding of CO2 dissolved in flood water through the reservoir. In this work, performance of CWF as a joint method of EOR and CO2 storage in an Iranian oil field is examined through sets of coreflooding experiments, conducted at a specified pressure and temperature condition on two different reservoir oil (light and heavy) and rock (carbonate and sandstone) samples from the investigated oil field. In summary, CWF improved the oil Recovery as compared to waterflooding (WF). Average Recovery factors (RFs) for CWG ranged from 6.4% to 13.6% when implemented as a Secondary Recovery technique and 4.2% to 4.8% when used as a tertiary Recovery technique. This improvement was also higher in the carbonate rock than in the sandstone one, slightly higher with light oil than with heavy oil, and lower when a more saline brine was used for carbonated water preparation. CWF also showed to be more effective when implemented in a mixed-wet system than in a water-wet one. Moreover, considerable amounts (about 42‒60%) of the CO2 injected through the flooding brine were ultimately stored in the porous media. Finally, a co-optimizing function was used as a standard for coupling CO2 EOR and storage. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd.
Olin Kuma Konwa - One of the best experts on this subject based on the ideXlab platform.
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microbial surfactant enhanced mineral oil Recovery under laboratory conditions
Colloids and Surfaces B: Biointerfaces, 2008Co-Authors: N K Ordoloi, Olin Kuma KonwaAbstract:Abstract Microbial enhanced oil Recovery (MEOR) is potentially useful to recover incremental oil from a reservoir being beyond primary and Secondary Recovery operations. Effort has been made to isolate and characterize natural biosurfactant produced by bacterial isolates collected from various oil fields of ONGC in Assam. Production of biosurfactant has been considered to be an effective major index for the purpose of enhanced oil Recovery. On the basis of the index, four promising bacterial isolates: Pseudomonas aeruginosa (MTCC7815), P. aeruginosa (MTCC7814), P. aeruginosa (MTCC7812) and P. aeruginosa (MTCC8165) were selected for subsequent testing. Biosurfactant produced by the promising bacterial isolates have been found to be effective in the Recovery of crude oil from saturated column under laboratory conditions. Two bacterial strains: P. aeruginosa (MTCC7815) and P. aeruginosa (MTCC7812) have been found to be the highest producer of biosurfactant. Tensiometer studies revealed that biosurfactants produced by these bacterial strains could reduce the surface tension ( σ ) of the growth medium from 68 to 30 mN m −1 after 96 h of growth. The bacterial biosurfactants were found to be functionally stable at varying pH (2.5–11) conditions and temperature of 100 °C. The treatment of biosurfactant containing, cell free culture broth in crude oil saturated sand pack column could release about 15% more crude oil at 90 °C than at room temperature and 10% more than at 70 °C under laboratory condition.
Bolin Kumar Konwar - One of the best experts on this subject based on the ideXlab platform.
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microbial surfactant enhanced mineral oil Recovery under laboratory conditions
Colloids and Surfaces B: Biointerfaces, 2008Co-Authors: N K Bordoloi, Bolin Kumar KonwarAbstract:Microbial enhanced oil Recovery (MEOR) is potentially useful to recover incremental oil from a reservoir being beyond primary and Secondary Recovery operations. Effort has been made to isolate and characterize natural biosurfactant produced by bacterial isolates collected from various oil fields of ONGC in Assam. Production of biosurfactant has been considered to be an effective major index for the purpose of enhanced oil Recovery. On the basis of the index, four promising bacterial isolates: Pseudomonas aeruginosa (MTCC7815), P. aeruginosa (MTCC7814), P. aeruginosa (MTCC7812) and P. aeruginosa (MTCC8165) were selected for subsequent testing. Biosurfactant produced by the promising bacterial isolates have been found to be effective in the Recovery of crude oil from saturated column under laboratory conditions. Two bacterial strains: P. aeruginosa (MTCC7815) and P. aeruginosa (MTCC7812) have been found to be the highest producer of biosurfactant. Tensiometer studies revealed that biosurfactants produced by these bacterial strains could reduce the surface tension (sigma) of the growth medium from 68 to 30 mN m(-1) after 96 h of growth. The bacterial biosurfactants were found to be functionally stable at varying pH (2.5-11) conditions and temperature of 100 degrees C. The treatment of biosurfactant containing, cell free culture broth in crude oil saturated sand pack column could release about 15% more crude oil at 90 degrees C than at room temperature and 10% more than at 70 degrees C under laboratory condition.
Jose A Teixeira - One of the best experts on this subject based on the ideXlab platform.
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isolation and study of microorganisms from oil samples for application in microbial enhanced oil Recovery
International Biodeterioration & Biodegradation, 2012Co-Authors: Eduardo J Gudina, Jorge F B Pereira, L R Rodrigues, Joao A P Coutinho, Jose A TeixeiraAbstract:Microbial Enhanced Oil Recovery (MEOR) is potentially useful to increment oil Recovery from a reservoir beyond primary and Secondary Recovery operations using microorganisms and their metabolites. Stim- ulation of bacterial growth for biosurfactant production and degradation of heavy oil fractions by indig- enous microorganisms can enhance the fluidity and reduce the capillary forces that retain the oil into the reservoir. MEOR offers major advantages over conventional EOR, namely low energy consumption and independence of the price of crude oil. In this work, the isolation and identification of microorganisms capable of producing biosurfactants and promote degradation of long-chain n-alkanes under conditions existent in oil reservoirs were addressed. Among the isolated microorganisms, five Bacillus strains were able to produce extracellular biosurfactants at 40
