چکیده
عنوان مقاله [English]
The conventional phase behavior study of petroleum reservoir fluids are valid when the reservoir temperature is far enough from the critical condition in which the material balance equation can be applied correctly. When the temperature of the reservoir is in the vicinity of the critical temperature the classical methods can’t determine the phase behavior of the mixture due to rapid phase change below the saturation pressure . A
small change in pressure will cause forming large amount of either liquid or gas phases.In this paper one of the Iran near critical reservoir fluid has been studied. A proper method for laboratory study of these fluids has been developed. Also the results show that the commercial software don’t work properly on these fluids. Based on the results of this study the production strategy of the reservoir has been changed