Étude du performance de la récupération d’huile Par l’injection de gaz–pattern GZ20A-

Abstract

Oil fields decline is a universal andnatural physical phenomenon. Among thedepletedzone in the field of Hassi Messaoud we find “20A”. Fromthis zonewe have selected apattern which is based onan arrangement of injectorand producerwellsin a underinjectionreservoir. Our job is to studythe injectionperformanceand estimation ofreserves in place and therecovery rate from one side, and tomakeproduction scenariosinthefuture from the other side, ifcontinuingwiththecurrent production with regarding that in case itwill havean intervention,while making acomparison between thedifferent injectionscenarios in order togetalong-termdevelopment plan.our work entirelyshowsan acceptablesimultaneitybetween the two approaches: analytical and numerical. In conclusionand aftercomparison ofdifferent scenarios,some recommendationswill be proposedin orderto achieve andmaintain an acceptable results.