Simulation Study On Asphaltene Precipitation And Deposition During Gas Injection In Reservoir

Oil is an essential element of global economic growth.New technology for enhanced oil recovery being developed to increase the volume of recoverable oil.Gas injection is among the most common EOR methods,but the injection of gas can cause asphaltene precipitation,which can cause serious reservoir issues.The main problem to be solved in this study is the formation of asphaltene during gas for recovering more oil.Due to the seriousness of the situation,we wanted to do the study with the goal of determining and recommending the best of these two new processes of EOR gas injection,gas-alternating gas(GAG),triple-alternating gas alternating gas(TAG),and the conventional water-alternating gas(WAG).The main parameters taken into consideration for carrying out this study are the injection pressure,the injection rate,and the cycle sizes.It is essential to create a asphaltene precipitation and deposition model in porous reservoir medium.This model is based on specific properties of petroleum fluid and asphaltene precipitation data collected in literature reviews.Asphaltene is considered a pure solid.The component of the fluid is based on representing the precipitated asphaltene as a pure dense phase and dividing the heavy components of the fluid sample into non-precipitating and precipitating parts.Fluid property data is validated and mapped to the equations of state(EO).In the simulation runs,the effect of each GAG,WAG,and TAG parameter was acclaimed by adjusting the input one at a time while retaining the others consistently.The results showed that the information with the most significant influence is just the injection pressure.The greater injection pressure,the fewer asphaltene precipitates and deposits.The other variables have a minor impact on the precipitate asphaltene.According to the findings,it is possible to conclude that adjusting the pressure of the gas injection and the cycle of the injection will regulate the number of asphaltenes will precipitate and deposit in the reservoir.The results of this study will greatly assist operators who will be using GAG,WAG,and TAG methods in oil fields by enabling them to better manage flow assurance issues caused by asphaltene precipitation.