Optimization of Cyclic Steam Stimulation (CSS) injection parameters

Abstract

While searching to optimize the production rate dealing with a treatment of heavy oil crude in FNE, Fula North East “FNE” is a perfect nominee to this thermal recovery according to its high density “0.95” and high viscosity “727.33cp”. Since Cyclic Steam Stimulation (C.S.S) is one of the most proper and significant thermal recovery process. The prosperity of this technique is defined by a number of drive mechanisms like; viscosity reduction which is the most important one and the main goal of utilizing C.S.S., the expansion of gas, wettability, etc... In this research optimization to injection parameters is performed to well-38 FNE In order to increase the recovery factor under these parameters. CMG software used with given model (FNE model well 38) and by alternating the pre-exist injection parameters and trying different scenario of production, the parameters optimized under an increment in the total recovered oil. Then we reach for optimum parameters and they are:The optimized temperature 300℃ , The optimized steam quality 0.8 andThe optimized injection rate 300m^3/d.