OPTIMAL SIMULATION OF CO2 WAG USING COMBINATION INJECTION AND PRODUCTION SCHEMES TO ESTABLISH IMPORVED EOR PROCESS
INTRODUCTION:
It’s been almost 40 years that CO2 flooding is used as an Enhanced Oil Recovery technique by the exploration and production industry. The technique was first used in Canada in 1957 as a pilot test and got commercialized in the early 1970s. The usage of CO2 as a displacing fluid to further reduce the residual oil saturation after the water floods has been a trend which is followed across the globe owing to the excellent properties of CO2 as organic solvent. The technique has been widely in use among different regions from North America to Middle East, from South America to South East Asia. The technique has even reached its advanced form called WAG (water alternating gas injection).
The problem all the EOR techniques target is further reducing the residual oil saturation left after application of secondary recovery techniques (water injection and gas injection). WAG is a technique where gas and water injected in the reservoir alternatively so as to allow incremental oil recovery after the conventional …show more content…
Use of horizontal injectors and producer pairs here can be an area of study here. A few researchers namely Stephan et al., Schneider et al., Tiffin et al., have touched upon this topic and found that vertical floods are more efficient than the commonly used horizontal floods. The reason being in horizontal floods to achieve a balance between gravity and viscous forces is a bit easy compared to the conventional flooding techniques. Gas due to less dense in nature uses its gravity segregation to drive the flooding process at the same time viscous fingering and early breakthrough is
INTRODUCTION:
It’s been almost 40 years that CO2 flooding is used as an Enhanced Oil Recovery technique by the exploration and production industry. The technique was first used in Canada in 1957 as a pilot test and got commercialized in the early 1970s. The usage of CO2 as a displacing fluid to further reduce the residual oil saturation after the water floods has been a trend which is followed across the globe owing to the excellent properties of CO2 as organic solvent. The technique has been widely in use among different regions from North America to Middle East, from South America to South East Asia. The technique has even reached its advanced form called WAG (water alternating gas injection).
The problem all the EOR techniques target is further reducing the residual oil saturation left after application of secondary recovery techniques (water injection and gas injection). WAG is a technique where gas and water injected in the reservoir alternatively so as to allow incremental oil recovery after the conventional …show more content…
Use of horizontal injectors and producer pairs here can be an area of study here. A few researchers namely Stephan et al., Schneider et al., Tiffin et al., have touched upon this topic and found that vertical floods are more efficient than the commonly used horizontal floods. The reason being in horizontal floods to achieve a balance between gravity and viscous forces is a bit easy compared to the conventional flooding techniques. Gas due to less dense in nature uses its gravity segregation to drive the flooding process at the same time viscous fingering and early breakthrough is