Well productivity in the Asmari carbonate formation of southwest Iran has decreased in recent years as a result of production issues.The production rate must be maintained below 1500 STB/day to prevent water coning.In...Well productivity in the Asmari carbonate formation of southwest Iran has decreased in recent years as a result of production issues.The production rate must be maintained below 1500 STB/day to prevent water coning.In this study,a gas lift well is modeled using data from one of the producing wells of this field.Nodal analysis is performed using lift-gas injection rates and wellhead pressures at different reservoir pressures and water cut conditions to optimize production.Economic aspects are considered to optimize the artificial gas injection rates at different tubing head pressures and water cut conditions.Increasing the lift-gas injection rate from 0.4 MMscf/day to 1 MMscf/day enhances the oil production rate by 37.71%and 43.89%for 10%and 30%water cut conditions,respectively.Gas injection rates of 5.2 MMscf/day and 5.4 MMscf/day are determined to be economically optimal for 30%water cut with tubing head pressures of 260 psig and 270 psig,respectively.展开更多
Primary objective of the paper is to represent the functionality of nanotechnology in Enhanced Oil Recovery(EOR).Nanoparticles can resist high temperature and pressure in subsurface oil reservoir system and exhibit d...Primary objective of the paper is to represent the functionality of nanotechnology in Enhanced Oil Recovery(EOR).Nanoparticles can resist high temperature and pressure in subsurface oil reservoir system and exhibit different properties compared to same fine or bulk molecules.Due to small in size,it increases surface area and it creates massive diffusion driving force at higher pressure and temperature.In small surface area,it contains much higher concentration of atoms.Nanoparticles are used to modify optical,specific,thermal,interfacial properties of tight oil reservoir with 5e50 mm size pore diameter which consists trapped oil in place.Study reveals that by controlling nano mineral complexes can increase recovery of oil in oil field due to capillary hysteresis value change and specific behavior of clay mineral.Nanoparticles boost the oil recovery by mechanism of reduction in mobility ratio which reduces viscosity of heavy oil and interfacial tension and increase in fault lines permeability.Nanoparticles like silane treated silicon oxides,aluminium oxides in brine can be used.They have tendency of displacement of water and magnifies flow of oil in well.Some nanoparticles performance depends upon its operational condition for EOR process.In modern oil and gas domain by using EOR technique have oil recovery factor magnitude of 0.3e0.5;but by using nanotechnology there will be growth in oil&gas recovery efficiently and guarantying oil recovery factor range up to 0.5 to 0.6.It is not possible to know all application of nanotechnologies;but some experimental results and advanced technologies deduce that there is reduction in cost of hydrocarbon production for its market use by application of nanotechnology in EOR.Further advancement in nanotechnologies can increase more recovery of oil&gas.展开更多
文摘Well productivity in the Asmari carbonate formation of southwest Iran has decreased in recent years as a result of production issues.The production rate must be maintained below 1500 STB/day to prevent water coning.In this study,a gas lift well is modeled using data from one of the producing wells of this field.Nodal analysis is performed using lift-gas injection rates and wellhead pressures at different reservoir pressures and water cut conditions to optimize production.Economic aspects are considered to optimize the artificial gas injection rates at different tubing head pressures and water cut conditions.Increasing the lift-gas injection rate from 0.4 MMscf/day to 1 MMscf/day enhances the oil production rate by 37.71%and 43.89%for 10%and 30%water cut conditions,respectively.Gas injection rates of 5.2 MMscf/day and 5.4 MMscf/day are determined to be economically optimal for 30%water cut with tubing head pressures of 260 psig and 270 psig,respectively.
文摘Primary objective of the paper is to represent the functionality of nanotechnology in Enhanced Oil Recovery(EOR).Nanoparticles can resist high temperature and pressure in subsurface oil reservoir system and exhibit different properties compared to same fine or bulk molecules.Due to small in size,it increases surface area and it creates massive diffusion driving force at higher pressure and temperature.In small surface area,it contains much higher concentration of atoms.Nanoparticles are used to modify optical,specific,thermal,interfacial properties of tight oil reservoir with 5e50 mm size pore diameter which consists trapped oil in place.Study reveals that by controlling nano mineral complexes can increase recovery of oil in oil field due to capillary hysteresis value change and specific behavior of clay mineral.Nanoparticles boost the oil recovery by mechanism of reduction in mobility ratio which reduces viscosity of heavy oil and interfacial tension and increase in fault lines permeability.Nanoparticles like silane treated silicon oxides,aluminium oxides in brine can be used.They have tendency of displacement of water and magnifies flow of oil in well.Some nanoparticles performance depends upon its operational condition for EOR process.In modern oil and gas domain by using EOR technique have oil recovery factor magnitude of 0.3e0.5;but by using nanotechnology there will be growth in oil&gas recovery efficiently and guarantying oil recovery factor range up to 0.5 to 0.6.It is not possible to know all application of nanotechnologies;but some experimental results and advanced technologies deduce that there is reduction in cost of hydrocarbon production for its market use by application of nanotechnology in EOR.Further advancement in nanotechnologies can increase more recovery of oil&gas.
