Shahin Kord

Shahin Kord
Petroleum University of Technology | PUT · Ahvaz EOR/IOR Center

Assistant Professor

About

77
Publications
11,069
Reads
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1,198
Citations
Citations since 2017
55 Research Items
1046 Citations
2017201820192020202120222023050100150200250
2017201820192020202120222023050100150200250
2017201820192020202120222023050100150200250
2017201820192020202120222023050100150200250

Publications

Publications (77)
Article
Predicting and analyzing the dynamic and reactive behavior of confined fluids at the pore scale, especially in heterogeneous porous media with multi-physics phenomena, is one of the vital challenges in the energy industry and has found great interest among researchers in various fields. In this paper, various physics of the Lattice Boltzmann method...
Article
One of the procedures to measure the surface and interfacial tension (ST and IFT) is pendant drop tensiometry which has distinguished drawbacks to determine the ultra-low interfacial tension. The main drawbacks of previous pendant drop procedures were incapacitation for the drop formation at ultra-low IFT values, inability to provide a suitable pho...
Article
Full-text available
Spontaneous imbibition is a key mechanism of oil recovery in naturally fractured reservoirs. Many enhanced oil recovery techniques, such as modified salinity brine injection, have been suggested to improve spontaneous imbibition efficiency. To predict oil recovery by spontaneous imbibition process, scaling equations have been developed in the liter...
Article
Full-text available
As more and more oil recovery scenarios use seawater, the need to identify the possible mechanisms of wettability state changes in oil reservoirs has never been greater. By using molecular dynamics simulations, this study sheds light on the effect of ions common to seawater (Ca2+, K+, Mg2+, Na+, Cl-, HCO3-, SO42-) on the affinity between silica and...
Conference Paper
Emulsions can have both undesirable and desirable possibilities based on stability and instability to decrease or improve the oil recovery and also water treatment. Hence, it is crucial to attaining an appropriate procedure to extract the oil from emulsions as one of the major barriers in petroleum industries. The ionic liquids (ILs) deployed as a...
Article
In Archie's formula, cementation factor (m) is an important parameter that plays a key role in calculating fluid saturation and characterizing reservoir. Rock geometrical attributes, e.g. electrical tortuosity, particle's specific surface area, packing index, effective cross-sectional area, and porosity, considerably affect m. Natural heterogeneiti...
Article
Polymer flooding is one of the most well-known research interests in the enhanced oil recovery (EOR) due to the excess oil production and limited petroleum reserve. In the presented study, a hydrophobically modified copolymer consisting of acrylamide and styrene (HSPAM) was produced via inverse emulsion polymerization as a wettability modifier and...
Article
Rock typing with its various applications reduces the required time and cost for petrophysical analysis by categorizing similar rocks into distinct groups. Rock typing is divided into different categories, one of which, is electrical rock typing. An application of static electrical rock typing is cementation factor prediction which significantly af...
Article
Wettability is a key factor controlling the flow of fluids, solutes, heat and electrical current in porous media, and therefore it is important in studies of various processes including CO2 storage, secondary and tertiary oil recovery, as well as the displacement of water and nonaqueous phase liquid (NAPL). Although Amott-Harvey and USBM are conven...
Article
As a key parameter in the calculation of fluid saturation, cementation factor (m) is routinely approximated using the Archie’s equation. Numerous correlations and several techniques have been proposed to determine cementation factor, one of which is electrical rock typing. Besides hydraulic rock typing, which plays a significant role in modeling an...
Article
A reliable method for selecting the most suitable Enhanced Oil Recovery (EOR) method is of a high necessity in reservoir engineering. Machine Learning (ML) techniques have been widely adopted as an effective and fast approach in primary stage of EOR screening. This paper presents a step-by-step procedure of applying ML in EOR screening with focusin...
Article
In this paper, the performance of three imidazolium-based ionic liquids (ILs) including 1-hexyl-3-methylimidazolium chloride ([HMIM][Cl] or IL6), 1-octyl-3-methylimidazolium chloride ([OMIM][Cl] or IL8), and 1-dodecyl-3-methylimidazolium chloride ([DMIM][Cl] or IL12) in reducing the interfacial tension (IFT) between crude oil and IL solutions was a...
Article
Residual or capillary trapping is an important mechanism of CO2 trapping in underground porous media. Recent experimental investigation has shown that relative permeability and capillary pressure are function of saturation changing direction or hysteresis phenomenon in addition to the saturation and hysteresis leads to irreversible change in relati...
Article
Full-text available
Three decades has passed since the introduction of smart water injection in carbonate rocks; however, use of diluted seawater (dSW) and its associated mechanisms are not yet well understood. Several mechanisms have been introduced in the literature for increased productivity of low salinity water injection. In this study, coreflooding tests were co...
Article
Low salinity/Smart water injection (LSWI) is a promising enhanced oil recovery (EOR) method, where manipulating the injected water compositions helps in recovery from oil reservoirs via alteration of the rock wettability towards a more water-wet state. The geochemical interactions involved in this process are crucial in determining the wetting stat...
Conference Paper
The synergy between smart water and a thermoassociated copolymer consisting of acrylamide and styrene, poly(AM-co-St), called HSPAM, as a newly synthesized copolymer applicable under harsh reservoir conditions, was investigated for the first time as a promising candidate for enhanced oil recovery (EOR) purposes. In the first part of this study, a s...
Article
Production of oil from carbonate reservoirs has always been challenging. The nature of these reservoirs is complex and heterogeneous, and the rock matrix often has low permeability and unfavorable wettability. Hence, waterflooding as the primary method for enhanced oil recovery (EOR) usually results in low recovery in non-water-wet carbonate reserv...
Article
Thermal conductivity is defined as the ability of a material to conduct the heat. Rock thermal conductivity is influenced by several parameters such as mineral composition, geometrical factors, porosity, and saturation condition. Value of the rock thermal conductivity is necessary in all thermal processes in petroleum engineering such as thermal me...
Article
Fluid saturation in a hydrocarbon reservoir is the most significant parameter in evaluating reservoir resources. The possibility of developing a field completely depends on hydrocarbon saturation, which is normally obtained by well-known Archie's equations. Accurate determination of the hydrocarbon saturation depends on the precise estimation of th...
Article
Asphaltene deposition during enhanced oil recovery (EOR) processes is one of the most problematic challenges in the petroleum industry, potentially resulting in flow blockage. Our understanding of the deposition mechanism with emphasis on the rate of the asphaltene deposition is still in its infancy and must be developed through a range of experime...
Article
Up to now, a large number of studies revealed that smart waterflooding is a cost-effective method by considering the effect of potential determining ions (PDI) on enhanced oil recovery (EOR) in the carbonated reservoir. Current research studied the symbiotic effect of different ions concentration (SO4²⁻, Mg²⁺, and Ca²⁺) template in smart water with...
Article
Full-text available
One of the serious problems in the oil industry is precipitation and deposition of asphaltenes in the different oil production stages including formation, wellbore, production tubing, flow lines, and separation units. This phenomenon causes a dramatic increase in the cost of oil production, processing, and transferring. Thus, it seems to be very ne...
Article
Full-text available
The perturbed-chain version of Statistical Association Fluid Theory (PC-SAFT) emerged as a powerful tool to study the phase behavior of complex fluids such as polymers and asphaltene. In spite of this, it has not gained widespread acceptance in the industry because of its sophisticated oil characterization procedure. In fact, the predictive perform...
Article
One of the major issues in the oil industry is asphaltene precipitation. Modeling asphaltene precipitation is still considered as a complex problem due to various characteristics of different heavy components existing in the crude oil. Thermodynamic models have been found as accurate models for studying asphaltene precipitation in the past few year...
Article
Smart water application in carbonate reservoirs has been recently gained a lot of attention by researchers as a low-cost enhanced oil recovery (EOR) method. In this study, for the first time, the behavior of different smart waters in the absence and presence of TiO2 nanoparticles (NPs) has been investigated by analyzing their effect on wettability...
Article
Smart water application in carbonate reservoirs has been recently gained a lot of attention by researchers as a low-cost enhanced oil recovery (EOR) method. In this study, for the first time, the behavior of different smart waters in the absence and presence of TiO2 nanoparticles (NPs) has been investigated by analyzing their effect on wettability...
Article
Improving the crude oil properties can solve serious operational problems in oil production and reduce production costs. In this study, the possibility of improving the quality of an Iranian heavy crude oil sample using two asphaltene degrading bacterial consortiums was investigated. So, two bacterial consortiums were isolated from oil contaminated...
Article
Asphaltene precipitation and subsequent deposition on the rock surface during natural depletion and Enhanced Oil Recovery (EOR) methods are two challenging flow assurance issues, causing a sudden decline in oil production. Different precipitation mechanisms and absence of an appropriate generalized characterization parameter have questioned the pre...
Article
Full-text available
Rock typing is an important tool in evaluation and performance prediction of reservoirs. Different techniques such as flow zone indicator (FZI), FZI * and Winland methods are used to categorize reservoir rocks into distinct rock types. Generally, these methods are applied to petrophysical data that are measured at a pressure other than reservoir pr...
Article
Surfactant assisted smart water injection is one of the areas of research interests in enhanced oil recovery. Simultaneous use of smart water and surfactants has drawn great attention in last decades. Majority of studies highlight co-injection of cationic surfactant and sea water/low salinity water. Therefore, this paper opens a new approach by exa...
Article
Asphaltene precipitation during natural depletion and enhanced oil recovery (EOR) methods is one of the problematic challenges, which can affect the production in oil reservoirs. Asphaltenes as the most surface-active agents in the crude oil can interfacially interact with water molecules. As asphaltenes absorb to oil/water interface, water potenti...
Book
Full-text available
Applied Well Testing: A Comprehensive Guide to Concepts and Interpretation Techniques. In persian language
Article
Chemical-assisted waterflooding enhances the ultimate recovery of a conventional waterflooding process through several mechanisms such as reducing interfacial tension between water and oil, formation of in-situ emulsions, treatment of adverse mobility ratio, and wettability modification. Application of chemical-assisted waterflooding for recovery o...
Article
According to the undeniable needs for economical enhancement of oil production, special attention is paid to water based supplementary oil recovery methods. Besides, combination of modified sea water (SW) and chemicals, is taken into further investigations. In laboratory scale, most of the findings are related to the impact of smart water or chemic...
Article
Focus on the molecular scale of low salinity brine effects seems to be necessary to clarify the possible mechanisms of carbonate rock wettability alteration. This study aimed at investigating the effects of different operational parameters such as pH, salinity and types of ions on wettability alteration (WA) during low salinity brine injection as a...
Article
Microbial Enhanced Oil Recovery (MEOR) is a term which is attributed to the process of utilizing bacterial activity for increasing the recovery factor of oil reservoirs. This process relies on several mechanisms especially interfacial tension reduction and wettability alteration mechanisms. The main purpose of this work is to evaluate the impact of...
Article
Full-text available
Emulsion application in Enhanced Oil Recovery (EOR) processes is a common and practical subject in petroleum industry. Considering a chemical use limitation, understanding of how much a chemical could be able to improve other chemical performance is very important. In the present article, the coincident impacts of nanoparticles, salts and surfactan...
Conference Paper
The main problem during field scale implantation of low salinity water injection (LSWI) is the decline in injectivity versus time. Moreover, the actual mechanisms that result in incremental oil recovery are not completely known. In previous studies, the geomechanical effects have not been considered, and pore volume changed while bulk volume is sti...
Article
Full-text available
As a physiochemical property, asphaltenes are known to be one the most surface active compounds ‎in crude oil. Due to such property, their behavior is most probably influenced by Fluid-Fluid ‎interactions at the contact surface (interface). Potentially and naturally in most of the cases, water is ‎in contact with crude oil and co-produced with it a...
Article
Full-text available
Application of polymers and nanoparticles has been suggested by several researchers as a chemical enhanced oil recovery (EOR) agent in carbonate reservoirs each of which has a specific influence on the reservoir rock and fluid properties. However, the high salinity of the reservoir condition along with high temperature has a detrimental effect on t...
Article
Full-text available
Oil industry suffers from flow assurance problems that occur both in upstream and downstream operations. One of the common flow assurance issues arises from precipitation and deposition of asphaltenes in various locations along the oil production path including near wellbore region in the reservoir, production tubing, flowlines and separation unit...
Conference Paper
As the energy demand of the world is increasing, the interest toward more oil production is also increasing. Naturally, reservoirs produce hydrocarbons to a maximum 20 % of total oil in place. This means that further production will only be possible through an Enhanced Oil Recovery (EOR) strategy. Water flooding has been recognized as the most popu...
Conference Paper
In this study, it has been tried to investigate the effects of pressure, asphaltenes/resins type and concentration, on interfacial properties of oil and water. Extensive sets of IFT tests between two crude oil samples and water were performed at various pressures. Synthetic crude oils were also prepared with desired amounts of asphaltenes and resin...
Article
Water injection is one of the most promising enhanced oil recovery (EOR) techniques, in which the incompatibility of injection and formation waters can lead to the risk of scale formation. Recently, several researchers have investigated different chemically scale inhibitors to minimize scaling precipitation, amongst which nanotechnology has been co...
Conference Paper
Carbon dioxide miscible flooding is known as a very efficient and challenging enhanced oil recovery (EOR) method. Besides the high oil recovery efficiency, the asphaltene precipitation and deposition is believed to be triggered by a perturbation of the thermodynamic equilibrium present in the reservoir. Asphaltene deposition results in wettability...
Article
Spontaneous Imbibition (SI) is in particular a very important mechanism for oil and gas recovery from matrix blocks in naturally fractured reservoirs. An analytical solution to the one-dimensional co-current spontaneous imbibition (COCSI) problem was proposed by Schmid et al. (2011). On the basis of this analytical solution, a set of scaling equati...
Article
Full-text available
CO2 injection is considered as one of the proven EOR methods and is being widely used nowadays in many EOR projects all over the globe. The process of in situ displacement of oil with CO2 gas is implemented in both miscible and immiscible modes of operation. In some oil reservoirs, CO2 miscibility will not be attained due to fluid composition chara...
Article
Although alkaline-surfactant-polymer (ASP) flooding has proven efficient for heavy oil recovery, the displacement mechanisms and efficiency of this process should be discussed further in fractured porous media. In this study, several ASP flooding tests were conducted in fractured glass-etched micromodels with a typical waterflood geometrical config...
Conference Paper
Reservoir simulation is an integrated tool for predicting reservoir performance and proposing development plans. However, in the master development plan (MDP) proposed based on the simulation results, there is always an associated risk that must be minimized. This risk arises from many different sources, one of which is the complexity in petroleum...
Article
Full-text available
Asphaltene precipitation/deposition have been longstanding issues in petroleum industry which lead to decline in oil production and economical efficiency. Owing to severe undesirable issues associated with this phenomenon, it is crucial to develop a reliable, accurate, and robust approach for quantitative estimation of asphaltene precipitation. In...
Conference Paper
Although Alkaline-Surfactant-Polymer (ASP) flooding is proved to be efficient for heavy oil recovery, the displacement mechanisms/efficiency of this process should be discussed further in fractured porous media especially in typical waterflood geometrical configurations such as five-spot injection-production pattern. In this study, several ASP floo...
Article
It is well known that the simple methods are not accurate for estimating the water content of acid gases, which includes carbon dioxide, because CO2 exhibits a minimum in the water content which cannot be predicted accurately by existing methods. In the present study, particle swarm optimization (PSO) was coupled to artificial neural network (ANN)...
Article
This paper presents an experimental investigation of gas-assisted gravity drainage (GAGD) performance while taking into account the effects of asphaltene deposition. The experiments were conducted at high pressures and high temperature (15-37 MPa and 102 degrees C) using carbonate cores and real reservoir fluids in the absence of water saturation....
Article
Full-text available
As the application of enhanced oil recovery (EOR) mechanisms expands globally, a vast amount of information is reported annually and many statistical works are carried out aiming mostly at the feasibility study of employing EOR methods for candidate reservoirs. In the last decades, researchers have gathered huge databases and used various technique...
Article
Full-text available
Thermal recovery involves well-known processes such as steam injection (cyclic steam stimulation, steam drive, and steam-assisted gravity drainage), in situ combustion, and a more recent technique that consists of heating the reservoir with electrical energy. When high frequency is used for heating, it is called electromagnetic (EM) heating. The ap...
Article
The complicated nature of asphaltene molecules besides the unknown mechanism of phase separation of asphaltene-containing systems as well as lack of a suitable characterization parameter has questioned the generality of the available thermodynamic models.The scaling equation developed by Rassamdana et al. 0050 and 0065 and its generalized form pres...
Article
Oil production from asphaltenic oil reservoirs has always encountered difficulties, such as plugging and unpredictable fluid properties. To physically recognize the aspects of asphaltene deposition, several dynamic and static asphaltene deposition tests were designed and performed on one of the giant south Iranian oil reservoirs using dead and live...
Conference Paper
To achieve the best simulation model, fluid thermodynamic modeling and reservoir fluid characterization are basic steps, in which laboratory data should be validated and matched with a proper model. A proper fluid model can avoid expensive PVT experiments. In this paper, a case study is presented using PVT properties of live fluid samples obtained...
Conference Paper
Studying PVT properties of the reservoir fluid could deliver valuable information from which the connectivity of the reservoir could be investigated. The source, from which the reservoir has been fed, is also of the information acquired by fluids study. In this paper, a case study is presented using PVT data of 17 fluid samples obtained from 13 wel...
Article
Carbon dioxide miscible flooding has become a popular method for Enhanced Oil Recovery (EOR) because it not only efficiently enhances oil recovery but also considerably reduces green house gas emissions. However, it can significantly cause asphaltene deposition, which leads to serious production problems such as wettability alteration, plugging of...

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Projects (8)
Project
The purpose of this project is to preparation and evaluation of nanotechnology-assisted wettability modifier to changing the wettability of near wellbore area of gas condensate fractured reservoir rocks to preferentially gas-wetting, as a permanent solution to vanish the negative impacts of condensate accumulation.
Project
This project consisted of three phases: 1. Synthesize of three ionic liquids (ILs) 2. Fluid-Fluid Interactions between a wide range of salinities from LSW to extremely high salinity brine and ILs 3. Rock-Fluid interaction for both sandstone and carbonate rocks
Project
Using smart water and smart Water-Polymer flooding to enhanced oil recovery by improving the rock wettability and sweep efficiency