عنوان المقالة:Comparison of Different Gases Injection Techniques for Better Oil Productivity Comparison of Different Gases Injection Techniques for Better Oil Productivity
Mohammed A Samba 1*) , Yiqiang Li 1) , Madi Abdullah Naser 2) , Mahmoud O. Elsharafi 3)
English Authors
Mohammed A Samba 1*) , Yiqiang Li 1) , Madi Abdullah Naser 2) , Mahmoud O. Elsharafi 3)
Abstract
There are many known enhanced oil recovery (EOR) methods and every method has its criteria to use it. Some of those
methods are gas injection such as CO2 injection, N2 and hydrocarbon gas injection. Where the CO2 has been the largest
contributor to global EOR. Gas injection can be classified into two main types; continues gas injection (CGI) and water
alternating gas injection (WAG). The objective of this research is to propose initial gases injection plan of the X field to
maximize the total oil recovery. The feasibility study of different gases to maintain pressure and optimize oil recovery
have been examined on a simple mechanistic reservoir model of considerably depleted saturated oil reservoir. To
maximize the total oil recovery, the simulation study was conducted on 3-phase compositional simulation model. For
more optimization, a sensitivity study was conducted on the injection cycling and component ratios. A sensitivity study
was also conducted on the following parameters to study their effects on the overall field’s recovery such as flow rate and
bottom-hole pressure. Results obtained in this paper shows that, the WAG CO2 injection was found to be significantly
more efficient than different gas injection and continues gas injection. The oil recovery depends not only on the fluid-tofluid displacement but also on the compositional phase behavior.
Abstract
There are many known enhanced oil recovery (EOR) methods and every method has its criteria to use it. Some of those
methods are gas injection such as CO2 injection, N2 and hydrocarbon gas injection. Where the CO2 has been the largest
contributor to global EOR. Gas injection can be classified into two main types; continues gas injection (CGI) and water
alternating gas injection (WAG). The objective of this research is to propose initial gases injection plan of the X field to
maximize the total oil recovery. The feasibility study of different gases to maintain pressure and optimize oil recovery
have been examined on a simple mechanistic reservoir model of considerably depleted saturated oil reservoir. To
maximize the total oil recovery, the simulation study was conducted on 3-phase compositional simulation model. For
more optimization, a sensitivity study was conducted on the injection cycling and component ratios. A sensitivity study
was also conducted on the following parameters to study their effects on the overall field’s recovery such as flow rate and
bottom-hole pressure. Results obtained in this paper shows that, the WAG CO2 injection was found to be significantly
more efficient than different gas injection and continues gas injection. The oil recovery depends not only on the fluid-tofluid displacement but also on the compositional phase behavior.
مادى عبدالله نصر عبدالرحمن | Madi Abdullah Naser | 289