A Novel Model of Foam Flooding Considering Multi-Factors for Enhancing Oil Recovery

Abstract

and available online here Cet article fait partie du dossier thématique ci-dessous publié dans la revue OGST, Vol. 70, n°6, pp. 909-1132 et téléchargeable ici D o s s i e rOil & Gas Science and Technology -Rev. IFP Energies nouvelles, Vol. 70 (2015), No. 6, pp. 909-1132 Copyright © 2015, IFP Energies nouvelles > Editorial -Enhanced Oil Recovery (EOR), Asphaltenes and HydratesÉditorial -EOR «récupération assistée du pétrole», Asphaltènes et Hydrates D. Langevin and F. Baudin ENHANCED OIL RECOVERY (EOR) > HP-HT Drilling Mud Based on Environmently-Friendly Fluorinated ChemicalsBoues de forage HP/HT à base de composés fluorés respectueux de l'environnement Abstract -Foam flooding is a promising technique for achieving mobility control and diverting fluid into low-permeability strata in post-water-flooding reservoirs. However, foam flow is very complicated and is influenced by many factors which have not been studied and explored very rigorously (i.e. permeability, surfactant concentration, foam quality, reservoir temperature, oil saturation, water saturation and seepage velocity). Based on core flooding experiments of foam flowing and blocking rules using two kinds of foaming agents, a novel model of foam flooding considering the influences of the above factors is established and solved using a reservoir simulator which is formulated using the IMPES method in conjunction with a Runge-Kutta method. Then, the validation is performed by core flooding experiments in both the absence and presence of oil. Finally, the simulator is used to investigate the effects of the permeability max-min ratio, ratio of vertical to horizontal permeability, gas-liquid ratio, depositional sequence, foaming agent concentration, and reservoir temperature.Re´sume´-Un nouveau mode`le d'injection de mousse conside´rant de multiples facteurs afin d'ame´liorer la re´cupe´ration de pe´trole -L'injection de mousse est une technique prometteuse pour atteindre un controˆle de la mobilite´et de´tourner le fluide dans des couches a`faible perme´abilite´de re´servoirs apre`s injection d'eau. Toutefois, l'e´coulement de mousse est tre`s complique´et est influence´par de nombreux facteurs qui n'ont pas e´te´e´tudie´s et explore´s de manie`re tre`s rigoureuse (a`savoir la perme´abilite´, la concentration en tensioactif, la qualite´de la mousse, la tempe´rature du re´servoir, la saturation en pe´trole, la saturation en eau et la vitesse d'e´coulement). Sur la base d'expe´riences d'injection de mousse dans des carottes et de re`gles de blocage en utilisant deux types d'agents moussants, un nouveau mode`le d'injection de mousse qui tient compte des influences des facteurs ci-dessus est e´tabli et re´solu, en utilisant un simulateur de re´servoir base´sur la me´thode IMPES combine´e a`la me´thode Runge-Kutta. Ensuite, la validation est re´alise´e par des expe´riences d'injection dans des carottes a`la fois en l'absence et en pre´sence de pe´trole. Enfin, le simulateur est utilise´pour e´tudier les effets du rapport max/min de perme´abilite´, du rapport de...

Experimental Validation of the Temperature-Resistant and Salt-Tolerant Xanthan Enhanced Foam for Enhancing Oil Recovery

“…Moreover, due to the particular mechanisms of foam generation and collapse, foam presents the selective blocking features of "big block and small not block" and "water block and oil not block" when it flows in porous media [13,14] , which is very favorable for enhancing oil recovery. Since 1990s, foam flooding has been piloted in many oilfields of China, and most of them have shown a good performance [15,16] .…”