valiahmad sajjadian - Profile on Academia.edu (original) (raw)
Papers by valiahmad sajjadian
Laboratory Study of Gravity Drainage Mechanism in Fractured Carbonate Reservoir-Reinfiltration
Proceedings of Latin American and Caribbean Petroleum Engineering Conference, 1999
In a well fractured reservoir that has a gas cap, after commencement of production the gas cap ex... more In a well fractured reservoir that has a gas cap, after commencement of production the gas cap expands and the gas-oil contact (GOC) in the fracture system descends. The oil contained within the matrix of the gas invaded zone begins to drain down into the fracture system and into the lower matrix blocks, due to the force of gravity. Some of the oil that is drained out of the upper matrix blocks can reinfiltrate into the lower matrix blocks from the top or side surfaces and can flow down through the areas of contact between blocks. In this study, data on a set of experiments that center on reinfiltration process are presented. The experiments cover fully saturated and desaturated blocks in vertical and inclined positions. The results of our experimental works reveal that the reinfiltration process depends mainly on the physical properties of the matrix block, the rate of oil supplied, and the drainage stage of the block. When oil is trickled at the top of a desaturated block, initially due to an extra capillary pressure gradient the infiltration rate can be higher than the maximum drainage rate of the block. After some time the rate of the drainage approaches that of the infiltration and an almost steady state flow is established. At this condition, the lower portion of the block could drain oil, while the upper portion could be under infiltration process. When the oil is directly supplied on the top of the vertical fracture, its crossflow from fracture to the adjacent matrix is demonstrated. In other words, under certain conditions the high conductivity vertical fractures are not necessarily the primary flow path of the supplied oil. The purpose of this study is to provide a basic understanding of reinfiltration process in fractured porous media.
Polymer Science Series A, 2015
One of the main problems of polymer solutions in enhanced oil recovery applications is their prop... more One of the main problems of polymer solutions in enhanced oil recovery applications is their properties losses after long term aging in electrolyte media. This paper reports preparation and rheological properties and thermal stability of novel weak hydrogels based on sulfonated polyacrylamide crosslinked in electrolyte solutions. Experimental results show that by increasing of crosslinker concentration, storage mod ulus dependency on frequency becomes weaker. At lower gelation temperature, gels with higher crosslinker concentrations exhibit lower storage modulus. Sharp decrease of viscosity value in viscosity shear stress curves, approved existence of yield behavior for sulfonated polyacrylamide/chromium triacetate systems. There is a linear dependency of storage modulus, viscosity and yield stress value on polymer and crosslinker concentrations. Sulfonated polyacrylamide weakly crosslinked samples show higher viscosity than sulfonated polyacrylamide solution after thermal aging. Results of this research suggest the potentials of weakly crosslinked systems based on sulfonated polyacrylamide for oil recovery applications.
Matrix Stimulation of the Candidate Wells Indicates Unexpected Performance Improvement in a Dolomitic Carbonate Reservoir
Brasil Offshore, 2011
... 2000. 5. Halliburton's Best Practices Carbonate Matrix Acidizing Treatments, Oct... more ... 2000. 5. Halliburton's Best Practices Carbonate Matrix Acidizing Treatments, October 1998. 6. Karami, P., Hashemi, A., Pressure Transient Well Testing Encountered Complexities: A Case Study, SPE-120893, (June 2009). 7 ...
Integtated Uncertainty Quantification by Probabilistic Forecasting Approach in the Field Development Project
Proceedings of Trinidad and Tobago Energy Resources Conference, 2010
In this research the experimental and theoretical studies on different Enhanced Oil Recovery (EOR... more In this research the experimental and theoretical studies on different Enhanced Oil Recovery (EOR) techniques, i.e. Water Flooding (WF), Gas Injection (GI) and Water Alternating Gas process (WAG) were performed on specimens taken from an Iranian carbonate offshore reservoir at the reservoir condition. The experimental results for each specified techniques were compared with the corresponding results obtained from a simulation model. In the case of WF and GI, the injection rates were set to be 0.1, 0.2 and 0.5 cc/min while for the WAG experiments, with two WAG ratios 1 and 2 and with 7, 7, and 10 cycles, the injection rates were 0.1, 0.2 and 0.5 cc/min. The results obtained from the experiments revealed that in all cases the amount of recovered oil is increased. Furthermore, the results showed that increase in the recovery of oil is significant in the case of the WAG injection with optimum rate of injection fluids comparing to those of the WF and GI scenarios. It was also pronounced that the recovery of oil with WAG ratio 2 is more than that with ratio 1. It should be mentioned that samples for sea water and pure methane were considered to be as injection fluids. It was also shown that the experimental results can be accurately correlated with a black oil numerical simulator, Eclipse100.
Use of Reservoir Simulation for Optimizing Recovery Performance of One of the Iranian Oil Fields
International Oil Conference and Exhibition in Mexico, 2006
Abstract A black oil reservoir simulator has been used to determine the reservoir management and ... more Abstract A black oil reservoir simulator has been used to determine the reservoir management and production strategies to optimize the oil recovery from an offshore low porosity, low permeability carbonate reservoir with permeability of 1-3 md and porosity of ...
Secondary Porosity; a Key Parameter Controlling the Hydrocarbon Production In Heterogeneous Carbonate Reservoirs (Case Study)
49th Annual Logging …, 2008
... Badri, M., Charara, M., Boyd, A., Cassell, B., Nurmi, R., Delhomme, JP, Grace, M., Kenyon, B.... more ... Badri, M., Charara, M., Boyd, A., Cassell, B., Nurmi, R., Delhomme, JP, Grace, M., Kenyon, B., Roestenburg, J., 1995, "Classic Interpretation Problems, Evaluating Carbonates": Oilfield Review, Shclumberger. Akbar, M., Chakravorty, S., Russell, D., Al Deeb, M. A., Saleh Efnik, MR ...
CHAPTER-1 INTRODUCTION 1 1.1 BACKGROUND GLOSSARY Some of the terms related to fractured reservoir... more CHAPTER-1 INTRODUCTION 1 1.1 BACKGROUND GLOSSARY Some of the terms related to fractured reservoirs frequently used throughout this thesis are explained for the benefit of reader. Adhesion: The molecular force exerted across a surface of contact between unlike liquids or solids that resists "interfacial" separation. Brecciation: Disruption of strata, and development of fitted clasts separated by fractures of chaotic clasts with or without matrix, formed as a result of tectonism, carbonate dissolution and collapse, or evaporite dissolution and collapse. Capillary: The minute openings between rock particles through which fluids are drawn. Capillary number: The ratio of viscous forces to capillary forces i. e. N, = (µ. v) / a. Carbonate: Carbonates are potential reservoir rocks, primarily limestone and dolomite. Types of carbonate textures include rhombic, sucrosic, microsucrosic, grainy, subcrystalline, slabby, oolitic and pseudo-oolitic. About one-forth of the world's sedimentary rocks are carbonates. Chalk: Carbonate rock of low-magnesian calcite composition composed dominantly of the remains of coccoliths and coccospheres. Clastic: Term used in reference to particles (carbonate, siliciclastic, or other minerallogies) that commonly are transported by fluids Cohesion: The molecular force exerted across a surface within a liquid or a solid that resists "internal" rupture. Composite grain: Aggregate carbonate grain composed of discrete particles bound together by cement or organic mucilage. Composite system: System that consists of both matrix and fractures. Connate water: In reference to evolved waters ultimately of marine origin that have entrapped in sediment pores after their burial, and which have been out of contact with the atmosphere for an appreciable period of geologic time. Contractional fractures: Result of volume shrinkage, as in the case of shales that lose water, cooling of igneous rock, and desiccation of sedimentary rock. Cross-axis fracture: Joint or faults which strike perpendicular to the associated anticlinal or synclinal axis. Dissolution: Process of dissolving substances. Glossary Dolomitization: Replacement of a pre-existing carbonate sediment or rock by dolomite. Dolostone: Synonym for dolomite rock. Dual Porosity: System consisting of matrix and fracture each having different but nearly constant porosity. End effect: Influence of capillary forces on the flooding behaviour that causes a spreading of the displacement front and build-up of the wetting phase at the end of the core. Fault: Fracture with displacement parallel to the fracture surface. Fracture: Is usually created as a result of breaking; a crack, division, split etc. caused by geomechanical stresses. A fracture can be either natural or induced, caused by drilling or well stimulation. Fractures can be either open or closed to fluid flow due to healing or mineralization. Fractures can be described as tensile, extension or shear-based on the stress that formed the fracture. Fracture aperture/Fracture thickness: Opening of fracture from side to side. Fracture number: The number of fractures in a given length. Fracture porosity: Porosity of voids in the rock produced by natural fractures. Fracture porosity tends to be small, usually 0.1 %-1%. Fracture set: A group of parallel joints or fractures. Fracture spacing: The average distance between two parallel fractures. Fractured reservoir: A subsurface reservoir of oil, water, or gas in which there are many inter connected natural fractures. Free gravity drainage (F. G. D. ): When the only driving force is the gravity force without any external force, it is called free gravity drainage. By this definition the ultimate saturation distribution inside the block is governed by the capillary pressure force of the block, and there would be no breakthrough of gas. Free water level: The level at which water saturation is 100% and capillary pressure is zero. Gas cap: Pocket of free gas trapped in the reservoir, above the oil column. Free gas: Gas present in a vapour state. Solution gas: Gas dissolved (in solution) in reservoir liquids. Joint: One of a group of parallel fractures which has no detectable displacement parallel to the fracture surface. Kerogen: Insoluble organic matter (fossilized), which can be converted by distillation into petroleum products. Lithology: Descriptive, physical characteristics of rocks. xli Glossary Longitudinal fractures: Fractures whose strike is parallel to associated longitudinal anticlinal or synclinal axis. Matrix porosity: Porosity in the fine-grained portion of the reservoir rock, excluding the fracture void. Matrix: The continuous material (sediment, cement) composing rocks; the continuous material enclosing interstices in rocks, between fractures. Maximum capillary pressure: Capillary pressure at irreducible wetting phase saturation.
International Journal of Mining Science
As many oil fields go into their final stage of production, novel technologies are necessary in o... more As many oil fields go into their final stage of production, novel technologies are necessary in order to maintain the production and increase the recovery of hydrocarbons. Therefore, advanced technology like Nanotechnology should be coming to overcome the problem of low recovery from reservoirs. Nano fluids were injected as a tertiary recovery method following a secondary water flooding. The experiments were performed at ambient conditions. Interfacial tensions and contact angles were measured in order to help explain the underlying mechanisms behind the increased recovery. In this research paper, the effect of silica nano and carbon nano particles on the wettability alteration in one of the Iran Sand Stone reservoir is mentioned. The results obtained from experiments show that these nano particles are suitable enhanced oil recovery (E.O.R) agents in water wet sand stone formations. Silica nano and carbon nano particles demonstrated same results in the wettability alteration of core plug. It was observed that the oil recovery increased by 5% when 0.05 wt. % Sio 2 nano fluid was injected into the core sample in a tertiary mode.
The adsorption of polymeric systems onto reservoir rock through altering the wettability of rock ... more The adsorption of polymeric systems onto reservoir rock through altering the wettability of rock surface improves oil recovery and reduces the unwanted water production. In this study, the adsorption behavior of dilute polymeric systems based on sulfonated polyacrylamide on the glass particles surfaces (representative of sandstone reservoirs) was investigated and the effect of this phenomenon on changing their surface properties was examined. Results show that crosslinked polymeric samples have lower adsorption on glassy surface comparing with uncrosslinked sulfonated polyacrylamide solution. Furthermore, the contact angle tests results showed that crosslinked samples change the surface property of glass particle less than sulfonated polyacrylamide solution. In addition the Langmuir isotherm model fitted the isotherm data better than the Freundlich model for these dilute polymeric systems. Furthermore, study of the thermodynamic of adsorption showed that their adsorption behavior on glassy surfaces is a spontaneous and exothermic process.
Integtated Uncertainty Quantification by Probabilistic Forecasting Approach in the Field Development Project
Proceedings of Trinidad and Tobago Energy Resources Conference, 2010
WAG Performance in a Low Porosity and Low Permeability Reservoir, Sirri-A Field, Iran
Abstract Sirri-A is a large offshore producing field which is located in the Persian Gulf, in Ira... more Abstract Sirri-A is a large offshore producing field which is located in the Persian Gulf, in Iranian sector, with an OOIP of about 2 MMMSTB. Its reservoir with porosity range of 3-21 percent and a permeability range of 0.1-3 md is situated in Ilam formation which is a ...
Thermodynamic Fluid Characterization in a Compositional Reservoir Model: a Field Gas Injection Study
A State-of-the-Art Permeability Modeling Using Fuzzy Logic in a Heterogeneous Carbonate: An Iranian Carbonate Reservoir Case Study
... The studied field is among the heteroneneous carbonate reservoirs in southwest of Iran. ... R... more ... The studied field is among the heteroneneous carbonate reservoirs in southwest of Iran. ... Recentinvestigation and research has shown that reservoirs are anisotropic and heterogeneous especially ... Shallow resistivity, Ci is conductivity of the buttons, and m is cementation factor. ...
Miscible Gas Injection: A Successful Experience Leading to Proper Reservoir Management Through Simulation Study (A Carbonate Case Study
Integrated Uncertainty Quantification by Probabilistic Forecasting Approach in the Field Development Project
... at initial reservoir conditions. The field has neither active aquifer nor gas cap. The reserv... more ... at initial reservoir conditions. The field has neither active aquifer nor gas cap. The reservoir porosity ranges from 3% to 28% with an average of 15% and the permeability ranges from 1 md to 100 md. The overall production is ...
Laboratory Study of Gravity Drainage Mechanism in Fractured Carbonate Reservoir-Reinfiltration
Proceedings of Latin American and Caribbean Petroleum Engineering Conference, 1999
In a well fractured reservoir that has a gas cap, after commencement of production the gas cap ex... more In a well fractured reservoir that has a gas cap, after commencement of production the gas cap expands and the gas-oil contact (GOC) in the fracture system descends. The oil contained within the matrix of the gas invaded zone begins to drain down into the fracture system and into the lower matrix blocks, due to the force of gravity. Some of the oil that is drained out of the upper matrix blocks can reinfiltrate into the lower matrix blocks from the top or side surfaces and can flow down through the areas of contact between blocks. In this study, data on a set of experiments that center on reinfiltration process are presented. The experiments cover fully saturated and desaturated blocks in vertical and inclined positions. The results of our experimental works reveal that the reinfiltration process depends mainly on the physical properties of the matrix block, the rate of oil supplied, and the drainage stage of the block. When oil is trickled at the top of a desaturated block, initially due to an extra capillary pressure gradient the infiltration rate can be higher than the maximum drainage rate of the block. After some time the rate of the drainage approaches that of the infiltration and an almost steady state flow is established. At this condition, the lower portion of the block could drain oil, while the upper portion could be under infiltration process. When the oil is directly supplied on the top of the vertical fracture, its crossflow from fracture to the adjacent matrix is demonstrated. In other words, under certain conditions the high conductivity vertical fractures are not necessarily the primary flow path of the supplied oil. The purpose of this study is to provide a basic understanding of reinfiltration process in fractured porous media.
Polymer Science Series A, 2015
One of the main problems of polymer solutions in enhanced oil recovery applications is their prop... more One of the main problems of polymer solutions in enhanced oil recovery applications is their properties losses after long term aging in electrolyte media. This paper reports preparation and rheological properties and thermal stability of novel weak hydrogels based on sulfonated polyacrylamide crosslinked in electrolyte solutions. Experimental results show that by increasing of crosslinker concentration, storage mod ulus dependency on frequency becomes weaker. At lower gelation temperature, gels with higher crosslinker concentrations exhibit lower storage modulus. Sharp decrease of viscosity value in viscosity shear stress curves, approved existence of yield behavior for sulfonated polyacrylamide/chromium triacetate systems. There is a linear dependency of storage modulus, viscosity and yield stress value on polymer and crosslinker concentrations. Sulfonated polyacrylamide weakly crosslinked samples show higher viscosity than sulfonated polyacrylamide solution after thermal aging. Results of this research suggest the potentials of weakly crosslinked systems based on sulfonated polyacrylamide for oil recovery applications.
Matrix Stimulation of the Candidate Wells Indicates Unexpected Performance Improvement in a Dolomitic Carbonate Reservoir
Brasil Offshore, 2011
... 2000. 5. Halliburton's Best Practices Carbonate Matrix Acidizing Treatments, Oct... more ... 2000. 5. Halliburton's Best Practices Carbonate Matrix Acidizing Treatments, October 1998. 6. Karami, P., Hashemi, A., Pressure Transient Well Testing Encountered Complexities: A Case Study, SPE-120893, (June 2009). 7 ...
Integtated Uncertainty Quantification by Probabilistic Forecasting Approach in the Field Development Project
Proceedings of Trinidad and Tobago Energy Resources Conference, 2010
In this research the experimental and theoretical studies on different Enhanced Oil Recovery (EOR... more In this research the experimental and theoretical studies on different Enhanced Oil Recovery (EOR) techniques, i.e. Water Flooding (WF), Gas Injection (GI) and Water Alternating Gas process (WAG) were performed on specimens taken from an Iranian carbonate offshore reservoir at the reservoir condition. The experimental results for each specified techniques were compared with the corresponding results obtained from a simulation model. In the case of WF and GI, the injection rates were set to be 0.1, 0.2 and 0.5 cc/min while for the WAG experiments, with two WAG ratios 1 and 2 and with 7, 7, and 10 cycles, the injection rates were 0.1, 0.2 and 0.5 cc/min. The results obtained from the experiments revealed that in all cases the amount of recovered oil is increased. Furthermore, the results showed that increase in the recovery of oil is significant in the case of the WAG injection with optimum rate of injection fluids comparing to those of the WF and GI scenarios. It was also pronounced that the recovery of oil with WAG ratio 2 is more than that with ratio 1. It should be mentioned that samples for sea water and pure methane were considered to be as injection fluids. It was also shown that the experimental results can be accurately correlated with a black oil numerical simulator, Eclipse100.
Use of Reservoir Simulation for Optimizing Recovery Performance of One of the Iranian Oil Fields
International Oil Conference and Exhibition in Mexico, 2006
Abstract A black oil reservoir simulator has been used to determine the reservoir management and ... more Abstract A black oil reservoir simulator has been used to determine the reservoir management and production strategies to optimize the oil recovery from an offshore low porosity, low permeability carbonate reservoir with permeability of 1-3 md and porosity of ...
Secondary Porosity; a Key Parameter Controlling the Hydrocarbon Production In Heterogeneous Carbonate Reservoirs (Case Study)
49th Annual Logging …, 2008
... Badri, M., Charara, M., Boyd, A., Cassell, B., Nurmi, R., Delhomme, JP, Grace, M., Kenyon, B.... more ... Badri, M., Charara, M., Boyd, A., Cassell, B., Nurmi, R., Delhomme, JP, Grace, M., Kenyon, B., Roestenburg, J., 1995, "Classic Interpretation Problems, Evaluating Carbonates": Oilfield Review, Shclumberger. Akbar, M., Chakravorty, S., Russell, D., Al Deeb, M. A., Saleh Efnik, MR ...
CHAPTER-1 INTRODUCTION 1 1.1 BACKGROUND GLOSSARY Some of the terms related to fractured reservoir... more CHAPTER-1 INTRODUCTION 1 1.1 BACKGROUND GLOSSARY Some of the terms related to fractured reservoirs frequently used throughout this thesis are explained for the benefit of reader. Adhesion: The molecular force exerted across a surface of contact between unlike liquids or solids that resists "interfacial" separation. Brecciation: Disruption of strata, and development of fitted clasts separated by fractures of chaotic clasts with or without matrix, formed as a result of tectonism, carbonate dissolution and collapse, or evaporite dissolution and collapse. Capillary: The minute openings between rock particles through which fluids are drawn. Capillary number: The ratio of viscous forces to capillary forces i. e. N, = (µ. v) / a. Carbonate: Carbonates are potential reservoir rocks, primarily limestone and dolomite. Types of carbonate textures include rhombic, sucrosic, microsucrosic, grainy, subcrystalline, slabby, oolitic and pseudo-oolitic. About one-forth of the world's sedimentary rocks are carbonates. Chalk: Carbonate rock of low-magnesian calcite composition composed dominantly of the remains of coccoliths and coccospheres. Clastic: Term used in reference to particles (carbonate, siliciclastic, or other minerallogies) that commonly are transported by fluids Cohesion: The molecular force exerted across a surface within a liquid or a solid that resists "internal" rupture. Composite grain: Aggregate carbonate grain composed of discrete particles bound together by cement or organic mucilage. Composite system: System that consists of both matrix and fractures. Connate water: In reference to evolved waters ultimately of marine origin that have entrapped in sediment pores after their burial, and which have been out of contact with the atmosphere for an appreciable period of geologic time. Contractional fractures: Result of volume shrinkage, as in the case of shales that lose water, cooling of igneous rock, and desiccation of sedimentary rock. Cross-axis fracture: Joint or faults which strike perpendicular to the associated anticlinal or synclinal axis. Dissolution: Process of dissolving substances. Glossary Dolomitization: Replacement of a pre-existing carbonate sediment or rock by dolomite. Dolostone: Synonym for dolomite rock. Dual Porosity: System consisting of matrix and fracture each having different but nearly constant porosity. End effect: Influence of capillary forces on the flooding behaviour that causes a spreading of the displacement front and build-up of the wetting phase at the end of the core. Fault: Fracture with displacement parallel to the fracture surface. Fracture: Is usually created as a result of breaking; a crack, division, split etc. caused by geomechanical stresses. A fracture can be either natural or induced, caused by drilling or well stimulation. Fractures can be either open or closed to fluid flow due to healing or mineralization. Fractures can be described as tensile, extension or shear-based on the stress that formed the fracture. Fracture aperture/Fracture thickness: Opening of fracture from side to side. Fracture number: The number of fractures in a given length. Fracture porosity: Porosity of voids in the rock produced by natural fractures. Fracture porosity tends to be small, usually 0.1 %-1%. Fracture set: A group of parallel joints or fractures. Fracture spacing: The average distance between two parallel fractures. Fractured reservoir: A subsurface reservoir of oil, water, or gas in which there are many inter connected natural fractures. Free gravity drainage (F. G. D. ): When the only driving force is the gravity force without any external force, it is called free gravity drainage. By this definition the ultimate saturation distribution inside the block is governed by the capillary pressure force of the block, and there would be no breakthrough of gas. Free water level: The level at which water saturation is 100% and capillary pressure is zero. Gas cap: Pocket of free gas trapped in the reservoir, above the oil column. Free gas: Gas present in a vapour state. Solution gas: Gas dissolved (in solution) in reservoir liquids. Joint: One of a group of parallel fractures which has no detectable displacement parallel to the fracture surface. Kerogen: Insoluble organic matter (fossilized), which can be converted by distillation into petroleum products. Lithology: Descriptive, physical characteristics of rocks. xli Glossary Longitudinal fractures: Fractures whose strike is parallel to associated longitudinal anticlinal or synclinal axis. Matrix porosity: Porosity in the fine-grained portion of the reservoir rock, excluding the fracture void. Matrix: The continuous material (sediment, cement) composing rocks; the continuous material enclosing interstices in rocks, between fractures. Maximum capillary pressure: Capillary pressure at irreducible wetting phase saturation.
International Journal of Mining Science
As many oil fields go into their final stage of production, novel technologies are necessary in o... more As many oil fields go into their final stage of production, novel technologies are necessary in order to maintain the production and increase the recovery of hydrocarbons. Therefore, advanced technology like Nanotechnology should be coming to overcome the problem of low recovery from reservoirs. Nano fluids were injected as a tertiary recovery method following a secondary water flooding. The experiments were performed at ambient conditions. Interfacial tensions and contact angles were measured in order to help explain the underlying mechanisms behind the increased recovery. In this research paper, the effect of silica nano and carbon nano particles on the wettability alteration in one of the Iran Sand Stone reservoir is mentioned. The results obtained from experiments show that these nano particles are suitable enhanced oil recovery (E.O.R) agents in water wet sand stone formations. Silica nano and carbon nano particles demonstrated same results in the wettability alteration of core plug. It was observed that the oil recovery increased by 5% when 0.05 wt. % Sio 2 nano fluid was injected into the core sample in a tertiary mode.
The adsorption of polymeric systems onto reservoir rock through altering the wettability of rock ... more The adsorption of polymeric systems onto reservoir rock through altering the wettability of rock surface improves oil recovery and reduces the unwanted water production. In this study, the adsorption behavior of dilute polymeric systems based on sulfonated polyacrylamide on the glass particles surfaces (representative of sandstone reservoirs) was investigated and the effect of this phenomenon on changing their surface properties was examined. Results show that crosslinked polymeric samples have lower adsorption on glassy surface comparing with uncrosslinked sulfonated polyacrylamide solution. Furthermore, the contact angle tests results showed that crosslinked samples change the surface property of glass particle less than sulfonated polyacrylamide solution. In addition the Langmuir isotherm model fitted the isotherm data better than the Freundlich model for these dilute polymeric systems. Furthermore, study of the thermodynamic of adsorption showed that their adsorption behavior on glassy surfaces is a spontaneous and exothermic process.
Integtated Uncertainty Quantification by Probabilistic Forecasting Approach in the Field Development Project
Proceedings of Trinidad and Tobago Energy Resources Conference, 2010
WAG Performance in a Low Porosity and Low Permeability Reservoir, Sirri-A Field, Iran
Abstract Sirri-A is a large offshore producing field which is located in the Persian Gulf, in Ira... more Abstract Sirri-A is a large offshore producing field which is located in the Persian Gulf, in Iranian sector, with an OOIP of about 2 MMMSTB. Its reservoir with porosity range of 3-21 percent and a permeability range of 0.1-3 md is situated in Ilam formation which is a ...
Thermodynamic Fluid Characterization in a Compositional Reservoir Model: a Field Gas Injection Study
A State-of-the-Art Permeability Modeling Using Fuzzy Logic in a Heterogeneous Carbonate: An Iranian Carbonate Reservoir Case Study
... The studied field is among the heteroneneous carbonate reservoirs in southwest of Iran. ... R... more ... The studied field is among the heteroneneous carbonate reservoirs in southwest of Iran. ... Recentinvestigation and research has shown that reservoirs are anisotropic and heterogeneous especially ... Shallow resistivity, Ci is conductivity of the buttons, and m is cementation factor. ...
Miscible Gas Injection: A Successful Experience Leading to Proper Reservoir Management Through Simulation Study (A Carbonate Case Study
Integrated Uncertainty Quantification by Probabilistic Forecasting Approach in the Field Development Project
... at initial reservoir conditions. The field has neither active aquifer nor gas cap. The reserv... more ... at initial reservoir conditions. The field has neither active aquifer nor gas cap. The reservoir porosity ranges from 3% to 28% with an average of 15% and the permeability ranges from 1 md to 100 md. The overall production is ...