Effect on oil recovery

Injection Well Considerations. Eluid injection rate can have a significant effect on oil recovery economics. Elow is radial from the wellbore into the reservoir. Thus the region near the injection wellbore acts as a choke for the entire reservoir. 

D. H. Smith and J. R. Combeiiati. Chemical alteration of the rock surfaces by asphaltenes or surfactants, and its effect on oil recovery by CO2 flooding. In Proceedings Volume. Annu AICHE Mtg (Chicago, IL, 11/11-11/16), 1990. 

Intermixing of the polymer mobility control fluid with the surfactant slug can result in surfactant - polymer interactions which have a significant effect on oil recovery (476). Of course, oil - surfactant interactions have a major effect on interfacial behavior and oil displacement efficiency. The effect of petroleum composition on oil solubilization by surfactants has been the subject of extensive study (477). 

Cuiec, L.E. Evaluation of Reservoir Wettability and Its Effect on Oil Recovery in Interfacial Phenomena in Petroleum Recovery, Morrow, N.R. (Ed.), Dekker New York, 1991, pp. 319-376. 

It was also observed that the compaction did not stop in the waterflooded areas, even though the reservoir was repressurized to the initial condition. Thus, seawater appeared to have a special interaction with chaUc at high temperatures, which has an impact on oil recovery and rock mechanics (Austad et ah, 2008). Austad and his coworkers started to work on the issues related to seawater flooding in carbonate reservoirs in 1990s. In the next section, the salinity effect on oil recovery is briefly summarized. 

This section investigates mobility effect on oil recovery factor in different formations homogeneous, two-layered heterogeneous, and heterogeneous with a random permeability distribution. 

Israelachvih, J., Drummond, C., 1998. Fundamental studies of oil—surface—water interactions and its relationship to wettabihty. Paper presented at the International Symposium on Evaluation of Reservoir Wettabihty and its Effect on Oil Recovery, Trondheim, 22—24 June. 

Further data on the effect of interfacial viscosity on emulsion stability and its subsequent effect on oil recovery efficiency by alkaline water flooding are needed. 

To determine the effect of the properties of liquids on oil recovery, tests were carried out using low viscosity products. In this case a gassed kerosene served as the liquid. Its gas content was the same as the gas content of the crude oil. According to the results, only 37% of the kerosene by volume has been displaced from the reservoir model although the kerosene viscosity under the conditions of the experiment was 100 times smaller than the viscosity of the crude oil. The rate of pressure reduction had no effect on oil recovery from the bed. 

Medout-Marere, V. Malandrini, H. Zoungrana, T. Partyka, S. Doullard, J.M. The 4th International Symposium on Evaluation of Reservoir Wettability and its Effect on Oil Recovery Montpelier, France, 1996 ... 

Alveskog, P.L. Holt, T. Torsaeter, O. Evaluation of Reservoir Wettability ir Its Effect on Oil Recovery Int. Symp. Proc. Montpelier, France, 1996. 

Graue, A. Tonheim, E. Baldwin, B. The 3rd International Symposium on Evaluation of Reservoir Wettability and Its Effects on Oil Recovery, Laramie, WY, Sept. 21-23,1994. 

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